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I'm going

In the end I followed the advice (even if they sounded more 'as warnings) to Dani3l3 and I've installed WordPress on our server and on my site. Therefore I will write 'them' from now on (actually it even more 'sense:)))

The link to my site (and then to my new blog) becomes [ this ]

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Skype down?

Someone you will be 'probably wondered why it was not possible to access Skype over the last ... 36 hours. This morning to try to understand what happens with an IM client that most 'and quickly' spread around the world, I went to investigate. There is no 'take long to actually understand it. At home there was an ad that talked about access problems system, problems they are working on (according to the report) all over the world from about 14:00 GMT. The latest update of today dates back to 5.00 GMT. It seems that everything is caused by inefficiency of an algorithm of the client and not a cyber attack. This' comforting and reassuring, but how can those who take even use Skype to work? Unfortunately for them the problem does not arise since the software and 'free.

At present my client seems to be able to connect for a while (though hopelessly back online after a few minutes) but 'capacity' of the eBay / Skype to work to resolve the problem so 'quickly shows how the product is a new dimension of online services.

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client server models: we have not learned anything from the past?

Enterprise networks are growing together (thankfully) to companies that are beginning to enjoy the benefits of opportunity 'to connect, at a reasonable cost, geographically distributed locations. VPN over Internet, dedicated connections or VPN built on the backbone of the ISP ... the choices are many with many advantages and disadvantages in each. The only thing that still unites the various solutions and 'capacity' of the transmission channel. Take any wholesale ADSL line: huge capacity 'of the band to download, a window minimum (256Kbps) for uploading. This is' a technical characteristic that can 'be acceptable for a company that has to sail or (already' not) use the means of electronic messaging. We see instead a necessity 'purely administrative: what company does not have a management system? In this area there are solutions of different nature and design, yet all have one thing in common: the client / server model (like the vast majority of applications).

The thing that strikes me most of the model client / server "and now 'that few seem to have learned something from the past. Think for a moment of IBM 3270 terminals, also called "Display Device" is used to access the management system resides on mainframe (server) on dumb terminals using a program text: Telnet (client). A simple model in which the user enters the data or waiting for data on your terminal server from transmitting or receiving. The model and 'excellent, and' consists of three stages: the client in which 'present the user interface, the server effectively and that' the application that processes data from the client and transmits them to it , and the database. The characteristic phenomenal 'that dozens of people could make connections using very small as the capacity' of bandwidth used by the terminals was around Kbps (yes, one) if not during the printing process (how nice, then you send ASCII data to dot matrix printers: 80 characters per line, more ' CR and LF codes or FF). Today the model and

'"presumptuously" equal, but in reality' has a basic flaw. They removed a layer from the previous model. Today the client 'interface (GUI) while the server' brutally Database. Client / Server. Just right?

No.

The problem of network connections 'that are latent capabilities and' small. The ability 'are still large and expensive to justify the need for' a 10Mbps connection to be able to access a user management system and 'almost insane. Let us not forget that the speed 'connection between two locations connected in a VPN and' equal 'to speed' maximum connection more 'slow'. Just to understand, if two locations are connected to each other in using the VPN backbone ISP, talking about wholesale connections, even if on the route there is no traffic locations can not communicate with each other in more '256Kbps. Speaking of management, this means that if a user in a home in Turin try to access the management who is in Milan will be 'available only to those 256Kbps data transfer. Each time the user then performs a user interface, the "clients" a query, forwards it to the "server" and waits for the result ... a result that is' a recordset (a set of rows generated by the database) to be played back and processed. It often happens that the database "leave" results in its memory, so each "step process" between a record and the other needs a new request for data from the client to the database and a corresponding response. In addition, the connection timeout or the latencies bring with them problems of stability 'in the connection between the client and the server, introducing a whole series of problems and inconvenience to users so (which becomes unproductive) because the management of systems (that - done - no way to solve the problem).

The solution would be to insert a "middleware" between the two layers: the client sends a request to our "middleware" (which - in the case of systems management - and 'the management application itself), these queries database (That from a technical point of view and 'connected to the database with a high-performance network) and sends the results to the client already' developed. We should not go and invent new transmission protocols for doing these operations, there are already 'a lot and are optimized for this type of activity'. From a functional point of view, well ... things change considerably. Meanwhile, the user no longer has 'the problems of slow establishment of the connection and receive / transmit data bandwidth of 256Kbps and certainly do not represent a problem (even if the end lines are in 128-Kbps ISDN backup with the user can' safely continue to work undisturbed).

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Cyrus IMAP, and LDAP Potfix? no: Active Directory

works. The integration of an e-mail server Linux based Cyrus and Postfix on with Active Directory and 'a reality' in production and stable. I already have 'knocked out' a document downloaded from this url in which I described the whole procedure. Now I need to do the script that queries Active Directory to automatically create the mailbox and take up a project that I abandoned in 2004, a management interface for all based on Cyrus IMAP (for more information: here is the link ).

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What kind of period

It 's not go as I hoped ... or better ... as it should go ... the system 'still stuck ... I can not give me peace, I continue to review and revise the data that I pulled out this morning ... debug than most 'regular, see What does the system while processing the batch ... DLL, file system, memory ... no conclusion ... found another little problem on the disk cache system ... I have not yet resolved. At the system level these machines are perfect, also did not want any configuration errors.

say that our system is identical to that of another reality '... I have a premonition on the internationalization of the system ... Monday we will know '. Today I think I'll go 'forward analysis of the e-mail system ...

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You never

system in production, but still ... GN3 scripts do not want it to generate the XML and images to be exported. Yesterday Ivan crazy to test the import script from the production server web environment, everything is fine now and ... surprise, surprise, running the VB script that generates pictures and articles spits out a great "Microsoft Visual C + + Runtime Library Runtime Error!". Apparently according to a Microsoft KB (Product No. 916177 ) and 'a problem with the DLL version 6.6.8063 of the mfc42u.dll. I have only just received the hotfix via email, alarm and trip to the 5.00AM tomorrow morning shot in the office to install it. With a little luck I can get the hotfix on the server before they leave the job of capturing the web, which would solve many problems, otherwise I end up the PHP script going to query the MSSQL DB and extracts the images directly on the filesystem. Sperem to make it before the deadline of 7:30 am.

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New Challenge

the question: "save the e-mail system but let's make truly effective 'my answer': Linux RedHat (or Fedora, or CentOS), Cyrus and Postfix. What is so special? I forgot the fourth ingredient: Active Directory.

I am studying a system to achieve these objectives:

• reduction of licensing fees on e-mail systems
• keep all e-mail online (IMAP)
• reduce costs System Administration

At what point are they? I have an IMAP server that authenticates the KDC on the Active Directory (not 'single sign-on but it' s possible to consolidate the authentication mechanism on a system already 'present in many companies: Active Directory in fact) and uses the same for the aliasing and delivery of messages (basically makes LDAP queries). Avro 'a paper ready in a few days, I'm working at night: p

Stay tuned.

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Now that we have too much fun shiny

My previous post? Surely incomprehensible ... I was upset ... 4 hours of sleep, and I am an idiot 'And if they come upon' split the mirror of his camper on the bleak window of my car at 2 am, and then again a tremendous effort to be able to be polished in a hurry this morning in order to solve possible problems arising from agonist migration last night. At the end of the day and 'went well, much better than I expected, so certainly unparalleled compared to previous weeks, where we have seen all the colors. Among the other unexpected events are not missed, however we were able to remedy everything in time humanly acceptable. The fact is that at 8:00 this morning an SMS MT has comforted me: "no incoming call ... so it's all for the better." In fact it was so '. Shortly after 8 pm I have already occurred and Citrix users' could work.

The chronicle of two days of preparation to migrate to the editorial system? Meanwhile the absence of MS, which would have had the opportunity to make a major contribution, especially because 'living the implementation of some new policy that I put together in the management of profiles (which is painful' cost to scream even three days last week reconfigure the entire Citrix farm ... it was just luck that work on Windows 2003, because 'without fiddling with MS in Citrix was not so' simple). However, two days to see and review the server, verify configurations, compare them with the project data and predictions of use. Result? IBM, which saw only 3.5 GB of RAM (instead of '10Gb), storage system (SAN) is not configured according to the specifications that I had suggested (in addition to a waste of space while 'useless that I'm going to settle again tomorrow ... 3 disks from 500GB unused :-/)... and ale '! Backup all data prior to the unit 'logic 250Gb before converting to heat the unit' logic ... and 'still all right, I must say that the promises made by IBM DS4700 to this have all been answered to date: converted the RAID-5 RAID-10 in about 6 hours, we now have a united' logic composed of 8 FC 146GB disks for a total of just under 600GB of usable space (of which 500 are already 'allocated). I understand that a RAID-5 face losing less space for the overhead (in fact we had an area of little more 'than 600GB to 1TB), but ... performance? Moreover, a RAID-5 on 8 discs with the midplane of the SAN still 2Gbps ... I wanted a RAID-10, that machine has to work and will work 'so it must be so powerful. However, both the SAN and all things considered 'the problem was really more' least of all (the technicians who were installing the publishing system did not even realize that I was changing the geometry of the RAID in the buttocks :))))... unfortunate that the disks are dynamic ... this makes me really furious not a little. I explicitly said I wanted to make the cluster active standby on those machines, and what I do there?? "Well convert them ... is certain: reformat the drive 'logic, delete the logical drive, convert the disk, recreate it, restore it and it' done. And when I find them more '2 hours to make this work?!?! Patience ... so I already know 'how-are work-around this problem.

Server ... checks, checks, even checks ... "SQL crashes every 5 minutes, then again ... I miss the time to watch the event log: skew on the system clocks of 4 minutes. But because 'people do not ever check the system clocks?? (Now that I think I do not have NTP configured on Catalyst - put in a footnote - but now!). Has anyone ever read the documentation on Kerberos or Active Directory? If the clocks are misaligned authentication tokens are no longer valid 'and create problems ... but in this case was not enough: the part of synchrony between the two servers (obviously) going to ball. Rules on system clocks arranged ... the DC align with a stratum-2 clock and distributes updates to all other machines on the network. Problem solved.

Server ... still testing ... "I'm sorry, but the two did not x3950 10Gb of RAM?". The answer of course was convinced and quiet ... "How 'that he sees only 3.5 GB?". First question: check the version of Microsoft Windows Server 2003: all right, and 'an Enterprise ... so what! We search the web, since the past is looming terror that a new hardware or firmware. Microsoft says to ignore errors PNPMEM in the event log, but 'still miss 7GB call. The solution comes from the big blue house (also a well known problem - for those who had the same problem on x32 machines, and this' link to IBM KB). Editing the boot.ini file of the two server publishing, added switch / PAE, reboot the server: 10240Mb of RAM and installed. Problem solved.

editorial engineers need a user that mounts correctly units' drive of the new system, without of course going to affect the work of others. Created a new user that they can use, created a new logon script ... operational verification of the work done last week on Active Directory. E. User Logon ... okay, engineers can proceed to the great work and everything works perfectly: Problem: non-existent.

Anxiety MT was pretty obvious, given the past and are not at all surprised at the thing. Indeed ... Meanwhile, catch the second Cisco Catalyst 2960-G (24 copper Gigabit ports) and configure it ... I go down ... I go ... College ... Start ... I set ... I turn ... back down '... in short, a big job: 15 'and the second catalyst and' ready for work ... 25 'and it' also in his closet. 4 patch cord red (let's hope that MS is not color blind) cross the flight, labeled (a color-blind test;)) and wired in the American running along the datacenter. Network: Ready.

And so ... preparation for work, at 19:40, there are also recorded on the news blog of the editorial ( here is the address for movies ). Spegnamo all the metaframe. They still have some trouble on the management console, but it's probably 'because of our KVM switch. Off, removed the rails, and reassembled again slipped back into the rack, all attached, high-density '. Gia 'that we had with auctions we cleaned the fans with compressed air. In a stroke of tool (which I had brought for the occasion below) and click / clack of the tracks, in 25 minutes even the servers were in the new housing. Auction has meticulously connected all the servers, cables, power visibly labeled and secured to the guides, network cables gray for servers connected to the switch and route it again: the start of every single server, functional testing, installation of IBM Director to manage centralized server farm and are operating again. Citrix farm: up and running.

Let's move the LUN on the SAN dedicated to the archive of PDF (trifles, only years of history of newspapers, several hundred GB of data ... the usual stuff) from the server that has worked so far to the new server. Virtually painless, I tried to raise anxiety in MT saying that we have a "complication" but not 'fallen into the trap (maybe I should reverse the bottle of water on him to pretend anxiety). Storage: up and running.

Final preparations, 3 hours while the quiet company of colleagues' we are installing the editorial ends to migrate the environment. Meanwhile, I set all point to review the logon script terminal server, centralized logon script that were on the NETLOGON share of the local domain. At around midnight we made the exchange. Changes to the logon script, final checks to make sure it worked in the editorial the next day without too much trouble (we knew that it would have had some home troubles, but more 'what else' cause they are not the domain). Everything feels right, an hour to finish checking the logon script is impeccable. Editorial: OK!

Finally, we can disconnect the network, with auctions there are going to knock 'the second Catalyst, unplug all network cables and mounts it in the closet target. Incidentally I have touched on (but I say ?!?!?!) the power of the second fiber switch for storage. A moment of concern 'cause if you lose data from a transaction or there was an error in the configuration of the network FC were back to square one. Pero 'infrastructure, from this point of view, and' impeccable: it has all continued to function without batting an eye: the system has operated perfectly redundancy circuits, I made a phone call to MT to hear if all goes well, they 'felt that something had happened (even though he had not understood what at first glance). But 'everything' and 'good: system fault-tolerance on the storage system: tested. (I only regret they did not perform crash tests of redundant power supplies for IBM ...: ()
Connected
second network switches, network devices and yellow cables critical services, cable gray server. Currently we have a redundant network on layer 2, but 'we are already' ready. All network cards are configured in the server failover and catalyst have RSTP ready to work, so 'tomorrow we have two other catalyst and high reliability' is also the backbone of the server. Connect the 4 wires that go to the second catalyst in the closet next to ... green lights. Ping: 1 ms. Perfect, we're done. Backbone: Editorial: 1Gbps between servers with 4Gbps between a closet and more! Now it really begins to think.

Today, small problems that we expected, except for one who has risen problem on SQL Server 'found machine with 10Gb of RAM and only 2 of the paging file. Fortunately, and 'was able to resolve this problem without restarting the hot editorial (at noon on that day of closure could be "annoying" to the user). Interventino few here and there but nothing on the remote stations transcendental. So a peaceful migration, including all those I have seen and experienced so far, and 'was probably the most' absolute quiet.

Remember my post about enabling a new home? This is 'real life, not a vision) and Ed' why would not trade my job for anything in the world:)

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Finally yesterday we finally had a hand in that beautiful Editorials little family of servers. A company which - according to the standards seen to date - to move from one server to another server 4, change the locations of the Ethernet network, install two Catalyst 2960 in the new cabinet, set them up and wired, should take about 2 days and 'life a little more than' two hours of actual work. We've eliminated the old 10/100 network switch, server, and finally the backbone of the 'gigabit (copper), even if no physical redundancy (RSTP and' nevertheless already 'set up and ready for the addition of two new switch). While the technicians were doing their jobs editorial sull'editoriale to migrate services Aste83 and I are committed to move the server metaframe 4 ... arduissimo work: 30 'net is already' we were installing Director on all MetaFrame. Finally, the servers are all over each other, together (the 4 on the xSeries SAN). In the days before we had converted a united 'RAID logical previously made in RAID-5 (out of 9 discs: - /) in a RAID-10, since the amount' of data that these discs will have to manage inbound and outbound. One moment of near-panic 'when tapping into the power of one of the FC switch that shuts off the switch itself (now the cable did not come off' of course) but 'it has enabled us to prove that the MPIO works :))) and I finally

'is also clear how much of the editorial applications (mica for anything else, but because' understand that form around pictures before entering the page should have seen it in the bud).

short, a much less painful step of the previous weeks (GPO metaframe completely wrapped on a total revision of the entire production environment, SAN RAID-1 with a seemingly lost and irrecoverable, just the 100-odd GB of data - recovered the next day by Aste83 ...) but ... and 'was almost pleasant, I enjoyed it a lot. Only faint and 'lack of sleep ... we started at 20 and finished at 1:45 but all in all, and it 'worth it:)))

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still theft and loss!?! We protect your data. Applications

It' s amazing the amount 'of laptops are stolen from cars. Apart from allowing (or not) view when Pacheggio autogrill, probably the material loss of the device and 'the problem child. E-mail (see my earlier comments) and 'simply to preserve, but the rest of the data? A tragedy. Maybe your luck has it that some people do not even concern themselves with the information they contain, however, there is a potential possibility 'that he who steals a laptop (but of course it also applies to desktop computers) can draw on classified information. Following the rule of the social scale (of the enterprise must be) more 'Notebook' recently higher the possibility 'that contain sensitive data or otherwise of major importance for the company because' the computer itself will 'of a leader. What amazed me most and leave 'the fact that when I think about all data encryption to a complex thing to implement, maintain and above all to use. Then I talk to EFS and the world smiles upon those who must treat the data in a notebook.

Perhaps not everyone knows that EFS (Encrypted File System) and 'a feature' already 'in Windows 2000, and therefore also in Windows XP. Its implementation and 'simple: Select the My Documents folder on your computer to our manager, property in' advanced tax which the contents of the folder must be encrypted and the description of the folder will turn green. Our only concern from this point onwards, 'the that our leader will not lose your password and do not use a particularly simple. In any case we can make things difficult for the likely setting of the thief GPO lockout sufficient to exasperate him and convince him to change the password after having forced the user administrator. Should this happen we will continue to sleep good night's sleep means a certificate which is encrypted documents cease to be valid ', and the documents become completely unreadable.

You do not need to do any specific task. Each document will be saved in the My Documents folder 'figure. No property 'advanced, no additional applications, and' all there ', ready to be used by anyone. There are also

software operating in a very similar way, but since we have a function and a strong hand and most importantly, integrated into our system, 'cause do not use it? So much more 'that the user only has to learn to keep their documents in order, which requires a rather limited effort and therefore more' easily absorbed by it compared to learning to use a new application while complex, full of passwords to remember and parameters to be set. Normally open and close documents, and maybe after a while 'if they find a document on the disc whose color and' black rather than green, wondering why and contact technical support with a question that - from our point of view - and ' Finally a sign of improvement perche' i dati sono sicuri.

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Corporate & Open Source model

Ovunque io abbia lavorato mi è capitato di dover sviluppare un’applicazione per gestire determinate situazioni. Progetti, gestione supporto tecnico, IT governance, e via discorrendo. Ultimamente ho molto a cuore la parte di gestione del supporto tecnico che cerco di plasmare secondo quella che è la realtà corporativa in cui mi trovo (vedi Visioni IT: continuiamo ad integrare il Help Desk ). Uno degli argomenti di cui invece non ho mai avuto modo di parlare sono sicuramente gli aspetti sistemistici.

 

In passato ho lavorato molto con Apache e RedHat Linux e continuo a farlo with considerable satisfaction, however, my choices in the company fell on Microsoft Windows 2003 Server as a server platform for the application, while maintaining an open component for its implementation (PHP, MySQL, OpenLDAP, etc.). The reasons are varied, but in principle I have to admit that Windows 2003 Server is a product that I like most. I think it is one of the best products released by Microsoft in recent years (I think that if I had to choose between Linux RedHat and Windows 2000 Server I would think much more carefully to what to choose). Having always been a large number of users to manage (> 50) and an Active Directory domain in which all users are managed and going to duplicate a user database is more or less equivalent to a suicide administrative (from the point of view of course management systems). For this reason (pretty obvious), Integrated authentication with IIS6 (or base) is the natural choice to solve my problem. The objective is typically to provide users with the least possible number of things to remember as much as possible and simplify their lives (transparent authentication of IE). Regarding security, HTTPS support IIS6 totally responds to my requirements. In other words, with a relatively low-cost licensing I have a chance to put up a front-end production (also virtual) with a high level functional and able to give me the capabilities of High Availability with Load Balancing service (also available on Windows 2003 Web Edition).

The backend application (usually installed on the same machine) rather than its structure based on a database, MySQL 5, and as the ever-popular programming language PHP. There are two applications that have known very well and pull in favor of upper decks (such as. NET and MSSQL) intrigues me not to much (although I use the other two platforms, even in a web context - see below). MySQL 5 database is a robust, fast and capable of handling large volumes of information without any problem. I use it all the way from 3.23, with support strictly relational. Today I think I know how to use a large capacity, exploiting all the benefits that I can bring, the transaction support stored procedures, up to the management of the trigger (with the advent of version 5). PHP is also a choice derived from years of experience is fast, has a very extensive feature set and a framework that I created over the years makes things a lot. The knowledge of the language was certainly the decisive choice.

Now back to the aspects of software design. I mentioned the problem authenticating users and this is undoubtedly one of the most important reasons why I opted for Windows as a web server. Another reason is undoubtedly the document storage and indexing system built into Windows. And how can we appreciate the access to system resources of Windows other than through the libraries of PHP and COM objects? The latter (COM objects precisely) called from PHP on Linux open borders that are not traversable. Just consider the report generation. Many now say "but how, we can generate them in PDF." And the problem is resolved. The problem is that this is a response from technical / programmer and my opinion about it is that the PDF is not a practical size. It is a read-only format, unwieldy and difficult to reuse especially. Let us remember that we are talking about corporate applications, not web sites (in which case the PDF are certainly a good solution).

installing Microsoft Office on the server can retrieve Office documents themselves, created a native mode that certainly will not cause compatibility problems with Office packages distributed in the company. Then generate reports in Excel or Word becomes a breeze. Similarly, the prints of the reports are not more way to handle HTML pages but in a more "appreciated" by the printers: send documents to print directly to printer queues on the network is also simple. Another advantage of this integrated system is to be delegate to a non-programmer the autonomy to create new electronic formats. Suppose you want to print a report on letterhead or with different formatting. The user generates the report format should just build the skeleton of the document, format it so that the application replaces certain areas (or fields) with the values generated by the application (of course, a short course of training is necessary). No intervention the application code is required, management and IT department does not need to cooperate for a typical operation of the first division.

want to go forward? This is one of my "vision" of how things could go, but some time ago I tried to play. Take the COM object libraries of Skype and make sure that our application can also talk to the players, breaking the barrier of using email and so no doubt profitable even instant messaging systems.

not forget. NET and its system functionality that can be very comfortable. Take for example a simple application developed in the test environment for my intranet. The need was to be able to create an environment in which to spool a photocopier can "park" a scanned PDF file. The copier upload the file server using a direct access to SMB. Once the file is "dropped" on the server disk (ergo, they are removed the read lock) the server should change the name of the file and catalog it on the filesystem in a certain way. Here. NET returns useful, especially if what we put up is a simple service system with a few lines of C # intercepts the file you just created (with FileSystemWatcher) and moves to a position not otherwise accessible to users.

Surely the range of products available for Microsoft Windows environments are broader than the open-source products that, more often, requiring several hours of study, technical adaptation and inevitably the first graph to be implemented in production environments. Technical support, then, is something that touches us hope to have in a short time and always by community support.

short, according to my personal point of view, integrating vendor-specific solutions has its advantages (response time, deployment, technical support, documentation) and disadvantages (costs) compared to the world of Open Source solutions, but a balanced choice of two sizes to reap the advantages of both sides can bring tangible benefits and efficient corporate environment in which we work every day, giving users powerful tools that work - without us - so it would not work properly. Many different worlds can now work together without having to go crazy to find software that performs each action from outside suppliers, giving us the opportunity to create a single integrated and cooperative.

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IT vision: we continue to integrate the Help Desk

This thing I had already 'thought more' than once. Appearance and 'a matter of course in a system of managing calls, but because' the system for tracking Help Desk I developed myself, for one reason or another, it 's never been implemented (mainly lack of time and / or resources to do so). In general, I decided, for a wide variety of reasons, to develop the application on a Microsoft Windows 2003 Server, IIS, MySQL database and PHP 5. The reasons for this choice will surely be a cause for discussion later:)

The concept of this idea is quite simple: what if we could intercept the calls that come to our internal (technical support) to retrieve them when we go to compile data on a call? Let me explain.

calls are currently handled manually, a user calls, record the call, the category of failure, the user's name and his telephone number. But if the phone number came from the exchange? The key node of this and 'that I know how to do it.

An call technical support. Phone (unfortunately) began to ring. The PBX triggers a SNMP trap to the management system, which at its reception, loads data into the database. The operator answers the phone and clicks on the hyperlink that handles incoming calls. The inclusion of the record automatically generates a call technique, even without additional information. In this way, if all operators are busy, it's still a record of incoming calls.

The operator answers the phone, and the list of incoming calls on Management selects the call that is managing. The ranking, assigns a priority and pass the call being processed in less than 30''(calculated as greetings and pleasantries usual questions about time and health). Meanwhile, you can proceed with the analysis of the problem and possible solution to the same phone, or trace remains of what are the activities to be done (and then follow the normal life cycle of a case of solving the problem). If the operators were all busy answering other calls, or work on a general problem, or were simply in the bathroom, the system continues to collect the phone numbers that can be recalled when the Dealers or return to your desk.

Now, this system can see some advantages and some disadvantages. Starting from the disadvantages, the compilation of the headlights of the form elements may be quite annoying, so it could be resolved with a series of "bookmark" and pre-packaged data to reduce data-entry operations in a few seconds. Personally, from a point of view of both organizational and technical, I only see this as a critical issue. The benefits instead I look huge. We start from the fact that all incoming calls to the helpdesk are recorded. Because this is a management system service calls, do not have the problem of privacy (we consider also that the various Call Center do exactly the same thing in public areas). The system collects the date and exact time of call, with the advantage of having a certain point of departure of the signal (sometimes left the Operator of the HelpDesk, an action that goes far to impact on any SLA and rules of procedure for the solution of problems) . In a geographically distributed environment, collecting and grouping data directly executable on the database can lead to the generation of detailed reports on the capillaries and maintenance costs and administrative efforts to solve problems on the various cost centers, not to mention the fact that data analysis (with appropriate report) can also lead to make forecasts and projections about future problems and needs of a particular location.

Help Desk home made? Definitely continue this practice.

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Disclaimer ... oh my Disclaimer

every day I find nothing short of wonderful things in emails that I read. Today I saw one that was really new dell'affascinante:

" please do not print this e-mail Unless you really need to. "

Now I wonder: what is the point? It 's like the rule says that "for a company to send notices via e-mail, you first need to ask - again via email - and if' you can send that communication. "It makes no sense, then companies would distribute leaflets to leave in our inbox before a consent solicitation for commercial communications!

things that our beloved politicians (always strictly secular) are setting up a we are technocrats standards and rules absolutely useless, meaningless and often not feasible. But it still and I do not think I shall refer 'to end very soon:)

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Bella Vita

Invariably today I heard the infamous phrase "ah, you system yes you make a good life. "Yeah, the stereotype social workers on systems or networks (or - as I do not like very much - Computer ago) is a sedentary job, sitting behind a desk, intent on beating the keyboard. No stress, no major concern, fixed time, and piles of money. Well, inevitably, like all times, the person who said this phrase has absolutely no idea what it means to do our job.

I think that the system administrator and / or networks is the single most difficult job in the world. I say this not because I feel tired doing so (because it would not be absolutely true), but because it is a completely out of control. It is hectic, is evolving at a frightening speed. Every day, if not every hour, something new comes out, a security hole, an update, a new program, a new version. Not to mention the business aspects of the case. A technical manager for information systems must have an overview of who really incredible (do not be surprised if we are single-issue these individuals). From the outside you see only one set of machines that put order into their wardrobes, they are also a terrible figure. But who sees them with a different eye, he sees all sorts of problems: temperature, current, fire hazard, risk of burglary, damage caused by software, virus, mechanical problems, and to make matters worse sometimes it takes a also Sun with its sunspots. Who among you has ever asked if the area where you have the seat is an area with seismic activity? You know how many are the seismic monitoring stations in your area? Or have you ever wondered if the area where you are at risk of flooding?

fight every day with recurring problems and fixations that there are almost never stop thinking about our work, we would have to think and reflect at all times if we were to think of everything, and 24 hours day there would be enough to even begin. And what's more we miss the problems that give us the developers, known to consumers of all kinds because (often) too lazy to think about what they do. This leaves endless conflicts between the two levels of Information Technology who accuse each other of not being able to do the job. Suppliers of software products that they create rather than solve problems on their side because they have "experience". Hats off gentlemen, but sometimes, perhaps, who works in a company, knows it better than you, not to mention the fact that the market system since 390 is the past for some time, Intel thinks the era methods with a little 'different. At the end are those that when you talk about some technologies look at you as if I had just escaped from an insane a mental health center.

Well ... is not exactly a bed of roses and of course our work is not remunerated as good as many think (ah yes, but only in Italy!). What we experience every day, as well as phrases like "if you are not able to do your work, we find dozens of others better than yourself" is not considered an easy life. Often we have to do crazy rounds, pulled by 24 hours because we are in the midst of a stormy sea and we can not stop until we have repaired the damage (you read " vs Computer. Medical ?) Because if not our company remains strong.

The Information Technology is the engine of every company now, underestimated, understated and always fully used in any environment. We, as managers to run these engines, we are in our hands a dirty job, which always puts a strain on us, both emotionally and physically (Montataire you do the wiring closets or wherever it is needed: any technocrat as it should does this work with their colleagues). And look ... I have not invented anything

the other night I went out with some dear friends (I'm not sure those who make statements like those that have given birth to this post), and when they said that "to understand the technology, nowadays, and 'how to have super powers," I felt good. I must say that I had no second thoughts about my choice of work, continues to please me in every way (or almost). Pero 'to hear certain things ... and 'considerable satisfaction:)

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Gentlemen: We have a new place between thirty days

The great thing about their working reality is that you can organize just about any eventuality. We know the people, we know the business logic, we know of "death to die." When the reality then they are in business growth, is a source of pride twofold: first, that management is excellent, you see because productivity and farm size grows. The second is growing on a solid and stable foundation. The role of us in IT is just that: create a foundation that does not show signs of yielding to any sort of demand to the Management.

Keyword: growth. Requirements: planning.

Some planning is one thing upon which they based their work: I speak of course of the Project Manager. The problem is that sometimes they do not know the problems that may occur. We, on the other hand, we know our field and we know perfectly what are the weak links in the chain. In business growth, in particular the addition of a home to a corporate network, the weak link is the time (but not for all projects?).

times in Italy to activate a new line data is nothing short of appalling. When it goes well, we make it in two weeks to have a connection, when it's bad ... we have to wait almost a year (see "TLC operators in the limelight). Of course we can not hope that all goes well, so (as always) we have to find a solution. Here's my vision.

"We start with a new home in a month." Announcement fantastic, they are all happy. The IT department normally assume a heavy where people start to panic. "A month!? But we'll never no! ".

with us is different.

a day. Here comes the mandate. Open a new place, there will be no people to work and play this or that role. Let's load data, a short meeting per capire quali sono i requisiti della sede, raccogliere i dati significanti come indirizzo, condizioni dello stabile e cose così. Partono le prime telefonate ai fornitori con cui abbiamo stretta collaborazione. Armadio rack mezza altezza, pannelli di permutazione, router, switch di rete, prese di distribuzione, UPS, server dipartimentale e centralino telefonico. Conferme degli ordini ricevuti in giornata (abbiamo dei fornitori tosti ;)) e i tempi di consegna: settimana prossima abbiamo tutto il materiale. Intanto sentiamo anche l’elettricista e chiediamo autorizzazione al Capo per fare un sopraluogo della sede. Già che ci siamo sentiamo anche i nostri operatori per capire quanti ceri dovremo accendere per avere le linee dati (funzionanti) at that place.

Day two: all quiet, the usual tram tram work. Some minor operation on Active Directory and system management / publishing. Continue to collect data on new home, you go to see her tomorrow.

Day three: vision of the home, an electrician and a representative of corporate management to understand what they want to do there. Framing the technical area, we define electrical work and any wiring. The seat is large, it will take even a wireless access point for the meeting room and a videoconferencing system. Already made phone calls to suppliers (ah yes, in the past months we have drawn up a strict policy on products and services we are going to implement, and even before the site is "thought" we already know what it will cost the infrastructure of the core). OK suppliers, everything proceeds normally.

Day seven: got most of the material, everything is functioning properly. We have already printed and labeled all the equipment, configure the network switch and the departmental server ... limps. It has a power supply failure. Support Request (NBD?) And meanwhile we close the closet, certifying the operation. We continue with our day by day, so that you never get bored.

Day Ten: ready rack, mounted and loaded into the van. We have an appointment with the electrician who has finished the laying of electric line in place. Arrive on site, the placement of the cabinet. Attached to the floor, plugged in, e. .. okay. The core of the site is functional (too bad there are still ADSL). Telecom, however, brought us the studs ISDN, so we can establish temporary connections. Verification of network points and correct configuration of the equipment. We ISDN connections and verify that everything is in order. We understand that it is (thanks to the documentation that we have drawn in the previous months).

Day Fifteen: users of the new headquarters are in the main office for a short training course on the system we're going to propose: Windows GUI and web applications available anywhere. They also illustrate our security policies and explain the reasons for them. Our aim is only to protect the corporation, so no objections. Brochures to hand to all users, with user manuals and any routine procedures (such as contacting the Help Desk, such as numbers for what, who are people in the IT department and what they do). In short, we introduce ourselves as people who have the desire to transmit something, just do not work behind the scenes. At the end we are all in the same boat. End of presentation, we leave room for some question e. .. duty coffee break.

Day winds from remote test site, the first operational checks. Users can actually work, there should be no major hitches. Double check the documentation to make minor changes to the project, we document everything and we'll get it.

twenty-nine Day: recent tests, definitive. We are OK with everything, we did troubleshooting lower in recent days for good luck, but now we're really ready.

Day thirty six in the morning: a man in place for technical testing, ignition system and configuration of those situations that can be considered as a "last minute". Nine in the morning: there's our new colleagues, they enter the office and we found our man (probably the twelfth coffee) hyper active and ready to teach them how to identify network devices and how to act on them: in other words: "read here, hit here." The cables are color-proof color blind, so we should not expect scenes like "oh my God the red wire or the blue wire?". But I do not believe I did the right we have also applied the labels clearly visible on the cables and pasted on the door of a better plan (which, moreover, has also written the phone number to call for technical support).

Day sixty (maybe) come the xDSL. The operator shall notify the company's technical services office must simply certify that the cables of xDSL on the patch panel, paragraph 23 and paragraph 24. Point 23 is in ATM0 port of router A, while point 24 goes into the router ATM0 B. The links are UP (wonderful invention the remote control) and then we can release the service on the corporate VPN. 45 seconds of disservice to the convergence of the whole system, only the operator, after 200 phone calls, hath been cut off from the router. No problem: the phone call to colleague in office: "I can follow the procedure to restart the router?". After two minutes, the router is manageable again, we end configurations (half coffee to remember that we use BGP and OSPF), and we find that everything works.

copy running-config startup config

and good work.

is a utopian vision? Sfidatemi.

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power or continuity '? Visions

One of the things that the IT world and why I welcome less waste and conceptual' when companies' advice (or alleged guru of the field) manage to persuade companies to acquire enormous computing power without thinking of the consequences of their actions. Machines with four or eight-way, with a capacity 'bloated memory, combined with some' RAID disk to prevent loss of data and redundant power supplies ... um ... sorry, but if the car dies, your business what of? Assuming you also have the best support contracts, managed to have a firm also has four hours (read: half-day) on your work ... Thank goodness there 'the Windows Solitaire.

Recently I see many of these reality ', which require a high capability' preparation. I am not sure of the people who are frightened of numbers or transaction processing (application, not database) of which the company needs. Pero 'I have often wondered why the' nobody (or hardly anyone) ever speaks of the model "load balancing". Perhaps not everyone knows that the clusters are not only important to ensure the continuity 'of a service, but can also be used to increase the capacity' of processing system in its complexity '.

I take as an example a project that I developed (in the laboratory, but it 's quite capable of operating in the real world) for a test. The problem was you can make a large amount of processing' format documents PostScript to PDF conversion.

For the development test environment I used virtual machines that ran a Windows Server 2003 Standard Edition (yes, the standard edition, so it is not 'cost-prohibitive). The first Windows 2003 server I have configured the hardening also now making application, in order to have a virtual machine to be replicated on all the others. On completion of the installation I sealed the system with sysprep (other system component) and I copied the disk image to a DVD. I launched the first virtual machine, completed its configuration, and then put the domain (in this case I had already 'two DC running). The three other nodes I simply copied my image from the DVD and start the virtual machine from that disk. In less than two hours I had 4 servers perfectly ready to be configured in the cluster.

For the clustering load balancing I used the Network Load Balancing Microsoft Windows 2003 Server, I created the cluster and added the 4 nodes. The service was of course the shared file and printer sharing service. Then I started to send the files to the cluster and verified which were analyzed by the various server nodes. Of course I could not expect tremendous performance (the laboratory was running on a uniprocessor machine) but 'changing hardware architecture (possibly via a server Xeon Dual Core processors, or even games) the advantage was obvious.

The solution presented would be possible to develop a more 'large amount' of data with a single machine (reducing the waiting time of the output) to save on hardware (nearly 20%) of the proposal made by a 'On the other hand (a quad machine with a roar of memory and disk configurations unintelligible). The advantage of a true solution for load balancing (over for hardware that brings the same volume calculation) and 'continuity' of service. Suppose (as e 'in the case of the project described) that the PDF is crucial for the business' company and that a lack of delivery of the PDF you make a loss not only temporary but also image. What happens if the system stops? Between servicing, telephone calls from people who rail against the administrator of the system, the service call and prayers "is not the disk controller" spend between 2 to 4 hours before the problem is solved (already ', because 'found the courier traffic due to an accident, and if our SysAdmin opens the car assurance goes to hell). The damage ' fact: there are two hours to 20, closing date of the delivery of PDF, the next day there is 'an important event in which the company had invested money and can not' have the brochures from the printers. The system is solved, are the 19, the system and 'just broken, taking charge of the first file ... is damaged, it must recontact the chart to put them back in the queue of processes ... pass 20, the system 'still in the middle' way to finish the conversion ...

definitely the solution all on one "does not work, especially because 'that are real benefits in these applications. If she died a single virtual machine (dump system, crash the application), other nodes would however, continued to operate, and the delay would have been really low, without compromising the image.

Business Continuity and High reliability '? Let's talk about ...

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IT: Integrated Warehouse

Imagine your company has a warehouse of products to customers is completely computerized. A database with all the stock items, labeled with a labeling machine that prints the serial number with a barcode. Your employee enters magazzno not need to know that the stock is, when it was purchased or another: the box is there, has a label, so it can be removed. Your employee takes the box, passes to the terminal in store, insert the own serial number and password (which happens to be 'the username and password using the PC), reads the barcode, enter the recipient's neck, and the purpose. Send the form to the server management that is out there on the printer side of the packing slip of the product. Everything is already 'recorded and saved in your database management, the workers involved in the operation of the warehouse can be found on the screen immediately, no loss of time, no organizational problem. Do you think it would be great, but you're afraid that costs a crazy exaggerated? Perhaps it is not 'so.

The right choice of platforms can 'bring substantial benefits in enterprise environments. Build an Intranet web-based, for example, has the advantage that it can be extended to the whole business environment in minimum time and there is no need to install client-specific user terminals. The choice of Microsoft Windows Server 2003 to execute the application would promote the concept of "single sign-on (provided you have a domain or NT5 NT6 available) through which users are accustomed to a few things (running a Only one user name and password) in a timely manner (complexity 'credentials, self-service password change) for all business applications. A solution that is also reflected on the management of those documents that must comply with safety and obvious pragmatic management policies credentials of the user. The adoption of Microsoft Windows Server as an application platform that offers a second advantage to my vision: native support for different printer driver (etichettattrice or network printer does not necessarily PS) allows for greater flexibility 'in choosing products to use and the' uselessness' of writing code "ad hoc" for this printer, as the middleware between application and printer down from the same application code to the device driver itself. Third and not least, the concept of COM objects in Microsoft Office enables web application to use Word or Excel as an "engine" of print management (notoriously unmanageable via html) print making processes more 'simple and, once again, more' independent of the output device used (laser, inkjet, thermal, needles).

but open source and 'free! Of course, there is no 'doubt that installing a Linux web server has a cost related only to the hardware, it also means that the knowledge of the medium are delegated to a small number of people who know that environment. It also means creating a system that can not 'blend in with the rest of azendale which inevitably relies on commercial platforms. Means to introduce additional "weak points" in the chain (already 'fragile) stability' of the system and create confusion among users, complicating the lives of those who, with rare exceptions, sono pigri e faticano a pensare anche al loro piccolo. Provate a spiegare ad un utente che deve ricordarsi la propria password del pc, quella della posta elettronica, quella del proxy, quella del gestionale, quella della Intranet. E che ai sensi di legge, devono anche pensare di tenerle tutte complesse e cambiarle ogni tanto!! Per quanto le soluzioni tecniche Open Source possano essere belle e strafighe (passatemi il termine) corporativamente parlando (e politicamente) sono un suicidio amministrativo (tecnicamente parlando).

Come appunto ho appena affermato, scelte opportune si riflettono su ambiti differenti. La spesa (perpetua) di acquisizione di licenze per Microsoft Office e Windows 2003 Server (anche web edition) possono essere facilmente recovered by calculating the savings in time application development using also (like myself would suggest) Open Source programming languages like PHP and database platforms like MySQL or PostgreSQL (without forgetting where possible or necessary) the commercial databases such as Oracle, DB2 or SQL Server.

development prodtti mix of enterprise and open source method, in my personal opinion, could ('cause normally tip or "all open" or "all branded") lead to levels of integration that seem only to the extent by major companies rely on huge solution provider, both addends of a formula on how extortionate sum investment (unnecessary and difficult to justify, IMHO).

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Privacy & Development Web

Current privacy laws (and common sense) require that application development is done in order to protect access to sensitive data to people who actually do have permission. According to guidelines, the development expected to create the database views and queries that, according to the user level, giving access to a given set of information. This approach, in my opinion, it is very costly in terms of resources and of the time actually available for development, is not easily achievable. What I want to propose here is an alternative method to develop web applications that meet those needs quickly.

The application uses PHP as a programming language as it may be applied to any other programming language. SQL queries are reported by MySQL.

The first phase of this development should be the development of a strong set of functions that carry out the functions of authentication and authorization. This set of functions must perform the tasks proposed below. Assign some functions of names, so you can draw in the sample code that I'm proposing.

authentication function

This feature should always be present. It can not be omitted, it must support a control mechanism that verifies the existence and the correctness of the credentials, the account was activated or not. In terms of application code this feature can be omitted because the handling of credentials can be delegated to the Web Server (basic authentication, etc.). As more manageable and integrated with other authentication systems or single sign on (eg. IIS and Active Directory) that are easier to control and already have a strong system of accounting control user (password expiration, complexity, etc.).

function authorization management

This in contrast to that component, however, is indispensable. The function gives the user a "level" of authorization that across the entire application, provides the user access to certain components or content. The function will load in session (not cookies!) The levels of permission that must be accessible. At the logon user supplied set of credentials will then be compared with the level of the user, and its "Authority token is saved in session. Every time you want to publish a component (an anchor, a record, even a single label), the program will determine whether or not the user is authorized to access that information using the "token" as a method of comparison.

How do we handle the data access?

Suppose you have a master data table structured like this: CREATE TABLE

tbl_pazienti (

ID_paziente INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,

nome_paziente VARCHAR (45) NULL,

codice_fiscale CHAR (15) NULL,

address VARCHAR (45) NULL,

location VARCHAR (255) NULL, province CHAR

( 2) NULL,

state CHAR (3) NULL DEFAULT "ITA",

phone VARCHAR (20) NULL,

codice_assistito CHAR (10) NULL, PRIMARY KEY

(ID_paziente)

)

Under the Guidelines, each "level" of authorization should create a view that gives access only to a limited data component. Programmatically, then, should we make a series of control structures that, depending on the user level, loads the appropriate view. The commitment to permission management becoming expensive, while adding a new level of approval would require the least intervention of a DBA (if the code is structured properly).

implement the method described in this article, however, we are going to handle all application layer. Through a configuration panel you can configure the parameters of "authorization." The process of creating a new permission level includes the following steps:

1. Creating the permission level
2. For each table we are going to define which column the user can see and which not (a boolean)
3. Save changes

The above operation can be done easily by any user who has the appropriate credentials for access to the administration, and must not be either a DBA or a programmer. In terms of code instead? All exactly the same. Let's see how.

Starting from the SELECT statement that queries the database, let's load the record of a particular patient.

SELECT t.nome_paziente, t.codice_fiscale, t.indirizzo, t.localita,

t.provincia, t.stato, t.telefono, t. codice_assistito

tbl_pazienti FROM t WHERE

t.ID_paziente

= 25 LIMIT 1;

The query returns a record only with the patient demographics. Now we see the application code.

The rule of RAD (Rapid Application Development) to see data that says we have to make a structure like this:

$ q = "SELECT .....";

$ r = mysql_query ($ q);

$ data = mysql_fetch_array ($ r);

# Other code

print ($ data ["nome_paziente"]);

not want to upset the rule of the rapid application development, rather, we want to keep. Then we replace only one function of the whole set this: the print () function.

Our new feature (which I will call GetElement ") does nothing but make the output of an element's content $ Date, but before doing so, checks whether the user has permission to view this element. According to the above example, therefore, that we wrote the code that we will be more like the following example:

$ sql = "SELECT ....";

$ obj-> query ($ sql);

# Other code

print $ obj-> GetElement ("nome_paziente");

Conclusions

The advantage of this programming method is that the developer can develop applications quickly, without regard for the concept of authorization. The system described can be applied to any element of the program as labels, elements of form, anchors, etc.. Development of the guideline within the administration making a complete split between the user who must receive an application, and the development group that must act on it instead of adding new features. When an end user needs to modify a permission level, the proposed system is sufficient to ask the person who deals with the management level which is normally a person who knows the internal optics business. If we used the views, however, we would have to call a DBA or developer, with the logical consequence of having to wait for a longer period of time for editing (and possibly bug because the change is made on the code).

There are aspects of security and privacy (this one is linked to the health care world that fascinates me a lot lately) I have not covered since they are mainly in arguments Systems. These elements are the communication between database and application servers, and between application servers and network clients, data encryption on the disks of the database, and any encryption data within the database tables. Maybe will be the subject of another article:)

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What nostalgia

"The application and 'slow'
" You buy a machine with 8 processors "

The (sad) history of information technology in recent years and 'is this ... programmers are doped system resources. Personally I regret the times when you program in Assembler: You had a reduced instruction set, and if not well designed a program finished the memory available to the source application. Times were hard, but when you release the software were real satisfying. I had the processor clocked at 16MHz, 24MHz at best. If a function was too slow (even in industrial applications) touch you rewrite the procedure to reduce the number of machine cycles it takes to complete (and deal with XL instead of a Lotus 123 spreadsheet to see the number of machine cycles and then takes milliseconds). But if we put too much to put a number of NOP enough to lose enough time ... WASTE TIME!

Not today. Code filthy, unstructured, object ... Megabytes of memory allocated in it's not clear why ... as someone said years ago (can not remember who - have mercy ') "as the programming language is very high, the capacity' analytical programmers calera'"... may come 'the day the code will be written 'alone ... Today everyone knows how to use frontpage and 'programmer (when cold).

The end 'pretty dramatic: non-structured, undocumented, badly commented, unsafe and inefficient. A colleague of my story 'of an application developed in non forkabile that, to give better performance, and' was installed on a machine with 8 processors. The outcome of this installation and 'implied. But then I ask myself, 'cause the developers do not have the humble' to admit they do not understand anything of systems and hardware, do not reflect the fact that applications can be improved simply by optimizing the code (or the query, or the workload between application and database)? What 'this dramatic fissure and' occurred between "programming" and "knowledge of the hardware on which the application should run?

Then he says you need to save money on infrastructure. I feel sorry people like my professor of Industrial Systems ITIS you tilted your head if you were doing a routine in 13 lines when you could do it in 7. He was right, I now I realize, but possible so that people 'do not teach more'?