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The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
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Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

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Application Server Question

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    #1

    Application Server Question

    Hi

    I have been reading the documentation and want to understand some more details about the Application Server. I currently am using VFP9.0 and I have created a web module in VFP that is complied into a COM object that is called by my web server. The result is that I have the full power of VFP available from a web page. Clicking a URL causes a method to be called in my COM server and I can obviously do whatever I want in the method. I can doing anything I can do in VFP minus the GUI. I can load activeX controls, ftp data, use sockets to connect to remote devices or serial ports, create reports etc. So I am wondering whether this is true of the application server. It appears to me that you should be able to do this however, much of the code samples appear embedded in web pages. Can I actually write code in XBasic and loads these modules upon request and run them in the application server? Basically can I do anything I can do in the desktop version of Alpha5 minus the GUI in the Application Server? I would like to be able to separate the web interface from the business objects which makes for easier maintenance using an nTier approach.

    Can I off load long running processes to a 2nd application server so that I do not load down other users on the 1st application server?
    Tags: None
    #2
    Re: Application Server Question

    I can only give partial answers to your questions, and I don't know VFP to be able to compare.

    You can compile any xbasic and include it in a web application, calling functions as needed. You can also not compile the xbasic, and include it in the same manner, but as text, calling functions as needed. In both cases, the actual code is hidden from any web user.

    Again, I don't know how VFP operates, and you may have a different concept for nTier, but the business object layer is already seperate from the foundation. I can create multiple websites/webapps from the same Alpha Five project application.

    Web apps can include activex, java applets, ftp functionality, all xbasic is available (except functions that call the GUI), etc.

    Come to my web seminar today (Friday) at Noon where I cover web apps. See my website below.

    On the ability to push process off to another server: Alpha has a "Cluster Server" coming, but I have not heard when it is available. That is supposed to handle some of the issues you brought up.

    But I can right now push processes off to another server, or run the process at off-peak, by storing scripts to run on a timer later, or to execute on a different machine. One of the videos at my website deals partly with this, look for video #2, although it's not exactly what you are asking.
    Steve Wood
    See my profile on IADN

    Comment

      #3
      Re: Application Server Question

      Take a look at the quad processor thread, I've posted a very similar solution there... You can easily reduce the load on the server by moving some processing to http calls to either a second instance of the WAS running on the same server but different processor, or to a different server altogether.

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