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Scalability of the Alpha Anywhere Application Server

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  • Scalability of the Alpha Anywhere Application Server

    Hello,

    On behalf of those of us that need to deal with scale (i.e. thousands of concurrent users), is anywhere aware of an official Alpha position on performance
    of their application server under load?

    I know there are many variables regarding the server HW, the application code, etc.. - but there must be some way of modeling/predicting the number of concurrent users that the app server can handle. I noticed that the annual license is based on 10 or 20 concurrent users. This is really low and makes the environment relatively useless for most mobile applications.

    Thanks,
    Bill

  • #2
    Re: Scalability of the Alpha Anywhere Application Server

    search the forum for "concurrent". You'll find lots of these discussions have already occurred. Nothing (significant) changed between the WAS on v11 and Alpha Anywhere, and though they're moving toward an IIS plugin model, all a5w pages/callbacks will presumably still be running through the WAS-turned-IIS-plugin.

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    • #3
      Re: Scalability of the Alpha Anywhere Application Server

      I know that there is no official position on this. You can get an idea of cost for higher user counts by reviewing pricing on zebrahost.net for Alpha servers configured for high load.
      Steve Wood
      Join the ALPHA DEVELOPERS NETWORK
      There is no Cloud. It's just someone else's computer.
      Web - Mobile - Hosting - Products - Frameworks - Developer Resources
      AlphaToGo | IADN (100% Alpha Anywhere Websites)

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      • #4
        Re: Scalability of the Alpha Anywhere Application Server

        Originally posted by Steve Wood View Post
        I know that there is no official position on this. You can get an idea of cost for higher user counts by reviewing pricing on zebrahost.net for Alpha servers configured for high load.
        Thanks Steve.

        It looks like it starts at $1000/month for 200 concurrent users. I don't think the financial math will work out for my app, so I have to bite the bullet and port to web2py and Sencha

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        • #5
          Re: Scalability of the Alpha Anywhere Application Server

          The Alpha Application Server (4 core license version) can be run with 4 instances and costs $99 per month or $1000 per year

          Depending on the nature of the application, each instance should be able to support between 40 and 150 concurrent users

          You can use multiple licenses behind a load balancer to scale - we offer consulting to help developers determine the optimum configurarion. Also there is volume pricing on multiple server licenses
          If you want more info please email me at richard@alphasoftware.com
          Richard Rabins
          Co Chairman
          Alpha Software

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          • #6
            Re: Scalability of the Alpha Anywhere Application Server

            Hi Bill,

            I have personally built and worked on some pretty large Alpha applications that can handle a large volume of users, although I have to admit they did not have thousands of concurrent users (in my case it was hundreds).

            I've worked with Zebrahost on getting this all set up (as well as my clients) and Zebrahost have the basic architecture pretty much figured out for scalable site. You basically have a load balancer with multiple alpha instances behind it and then the database behind that. They have found if SSL is required it's best to put it on the load balancer.

            Let's assume you have a pretty intensive application so each instance can only support 50 concurrent users. With one Alpha license of $1000 you get four instances on a hyper V server for example which would run you about $200 a month.

            So on a monthly basis it would cost about $280 (server plus license) to support 200 concurrent power users or a $1.40 per user per month.

            This is just a rough guide of course but I think it's within the ballpark and would allow you to extrapolate based on the type of application you plan to build. Even if you build your new site with free tools most of the costs will be about the same because you're still going to need the server and alpha licensing costs only represent about 27% of the total monthly cost. Plus you need to factor in the savings that alpha provides by allowing you to create your application that much faster.

            If you plan to charge for your application then on a per user basis a couple bucks a using seems pretty reasonable, but if you're going to build a free site that is advertising driven I guess you need to save money wherever you can. But I would still cost out the "true cost" of using other tools.

            Cheers,

            Scott

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            • #7
              Re: Scalability of the Alpha Anywhere Application Server

              That's a really good answer Scott. Thanks.

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