COM+.... why?

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  • nico1469
    #1

    COM+.... why?

    Hello all,

    My project has many layers - SI (sevice component), Orc
    (Orchestration) , BL &DAL. Nowdays i'm using com+ for every layer (Si
    is a service component, others are plain library components - without
    using setabort/setcomplete.
    My question is - why should i use com+ other then for the si? will
    com+
    slow the performance of the application (or maybe accelerate it
    (pooled?) -
    help would be much appreciated !


    Nico
    Tags: None
    • Thomas
      #2
      Re: COM+.... why?

      Firstly, yes COM+ will slow down writes to the database. COM+ is about 50%
      slower than using ADO transactions. However there are reasons for using COM+

      1. The system accesses multiple databases - In order to transactionally
      write to multiple databases you must use COM+ and its two phase commit. COM+
      uses the Distributed Transaction Coordinator service to ensure that all
      writes go through to both databases or neither database.

      2. Easier security model - If you want to secure your business and/or data
      layer components and be able to change the permissions after you have
      deployed, then COM+ is far nicer. I have developed a work around so that I
      do not have to use COM+, but it is not nearly as easy as using the COM+
      catalog.

      3. Object pooling - Granted, there are ways of getting the same effect
      without COM+'s pooling.

      4. Queued Components


      The problem with COM+, among other things, is that it makes deployment
      significantly more difficult. Exponentially so if you are deploying a COM+
      solution to the users desktop (i.e. not remoting everything so that COM+ is
      only needed on the server).



      HTH,


      Thomas


      "nico1469" <ereldor@hotmai l.com> wrote in message
      news:6c74520a.0 408081216.5baff 9f1@posting.goo gle.com...[color=blue]
      > Hello all,
      >
      > My project has many layers - SI (sevice component), Orc
      > (Orchestration) , BL &DAL. Nowdays i'm using com+ for every layer (Si
      > is a service component, others are plain library components - without
      > using setabort/setcomplete.
      > My question is - why should i use com+ other then for the si? will
      > com+
      > slow the performance of the application (or maybe accelerate it
      > (pooled?) -
      > help would be much appreciated !
      >
      >
      > Nico[/color]


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