Streams, protocols, documents and fragments

Tom Harding tomh at
Wed Feb 24 22:16:12 GMT 1999

David Megginson wrote:

> More importantly, you don't want to have to parse an entire document
> just to find out where it ends because that forces your system into
> linear processing -- on a busy server, it is absolutely necessary to
> be to isolate the documents/packets quickly and pass them off to
> separate threads (or even separate boxes) for parsing and processing.

Good point.  I have been implicitly assuming this as a cost of moving the parsing function into
the network infrastructure.  However, a general-purpose endpoint implementation would have a
hard time parallelizing in the way you describe because of possible inter-document dependencies
in the application protocol.  It has to deliver the documents to the next layer in the order in
which they were sent.  If parallelism is explicitly needed then a solution is to create
multiple connections.

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