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COM [Component Object Model] allows programs to be incrementally divided into specific parts or components such as business rules, database or other functions and deploy/distribute them to individual servers. This is called pipelining in microprocessor systems where processes are passed from component to another component until completed.

COM allows multiple servers to be working on the same request in parallel. DCOM Pipelining allows location-independent servers to process all components initially and as demand grows distribute components to other servers without any programming code changes. DCOM takes advantage of Windows NT support for multiprocessing called SMP [Symmetric Multi-Processing]. For applications that use a free-threading (next) model, DCOM manages a thread pool for incoming requests and can distribute specific components to other servers avoiding “bottleneck” problems.

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[tags]techtionary,dcom,techtips,com,smp[/tags]