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I have a large JSON file which consists of xyz records. I'm looking for a way to retrieve parts of the file and have been reading the http-specs on how to define HTTP range-headers in Apache.

The spec mentions that it is possible to define custom-range entities (vs the default 'byte') akin to the tutorial here.

I'm pretty green-eared regarding any apache httpd.conf modifications, so pretty basic questions:

  • can I declare more than one entity (for example byte and record)
  • if I declare "record" as an entity and specify a range of records to retrieve, how does apache know "what a record is" = where should I put the logic to tell Apache? that my JSON file consists of records and a record is ... this and that...

Thanks for some insights!

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It strikes me that, since JSON has an internal structure, that any byte ranges would have to be very specific to avoid reparsing the file at the remote end - but that then means implementing application logic in the webserver config matched to specific logic in the client to splice the file back again into soething meaningful. This sounds like a very bad way to solve the problem - a better approach would be to slice and dice the data using the application logic (PHP/Java/ASP...) –  symcbean Mar 5 '13 at 10:40
    
I agree it would better to do this inside the application itself. Still I was wondering, if I declared "record" as entity vs. "byte", if I could pull a range of records from a large JSON file (say 1-9,14-15,299-301). My application logic would tell the client just which ids to pull. –  frequent Mar 5 '13 at 10:49

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