Re: middle tier recommendations

From: Nick Malik (nickmalik_at_hotmail.nospam.com)
Date: 11/25/04

  • Next message: Jason Robertson: "How to FTP via VPN to sites on different IP's ?" 
    Date: Thu, 25 Nov 2004 19:53:09 GMT

    What is driving the architecture? What are the key constraints?

    Honestly, most applications are fine with an ASP.NET layer that calls a
    simple middle layer, written as DLLs, that call SQL. That said, most
    applications have fewer than 100 concurrent users. I'm going to venture a
    guess that this doesn't apply to you.

    How many servers have you set aside for this application?
    How many users do you plan to serve with this application?
    What is the nature of their use (continuous use for business day, occasional
    light use, occasional heavy use, receiving a stream of information)?

    In addition, you didn't provide the key constraints that drives the
    architecture.
    Do you have high uptime requirements (99.9% or better)?
    Do you have variable scalability issues (sudden spikes that increase traffic
    by an order of magnitude or more for a sustained period)?
    Do you need to be able to modify the behavior of the system while it is
    running due to the nature of competition in your business?
    Do you have existing systems that you need to communicate with? If so, are
    these systems designed for real-time communication or do you need to batch
    things up?

    Without at least a little of this information, my answer would be too vague
    to be useful.

    As for .NET remoting, it is a useful mechanism for designs that need to
    partition the execution of the application onto multiple servers. The
    marshalling is far more efficient than with web services, but it is still
    marshalling... and if you are sending data sets across a marshalling
    boundary, you are probably not designing your interfaces correctly.

    An excellent book: Advanced .NET Remoting by Ingo Rammer.

    HTH,
    ---- Nick

    "Param R." <pr@nospam.com> wrote in message
    news:%23kiwNQj0EHA.804@TK2MSFTNGP12.phx.gbl...
    > Hi all, we are in the process of architecting a new application that will
    > have an asp.net front end & sql back end. In the past we have used
    > webservices as a middle tier solution but in terms of performance it has
    not
    > been upto the mark. Besides with the latest .net version there are some
    > known issues with calling web services (keepalives etc.). What other
    middle
    > tier solution does .net have to offer? What is .net remoting and how does
    it
    > work? Is it similar to DCOM? Does it have to run under IIS? I would like
    > something that is not dependent on IIS preferably. In our solution we will
    > be passing custom objects back and forth with the middle tier interacting
    > with the database.
    >
    > Any help and guidance here is much appreciated!
    >
    > thanks!
    >
    >

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