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From: Niels Liisberg
I just glued a small ExtJs application together that uses AJAX calls
to get the JSON object which in turn is instantiated in the client and
rendered.
I don't know if anyone else noticed, but the JSON messages averaged about 1,200 - 2,400 bytes per screen, which is nearly as streamlined as the 5250 data stream itself.
If you were to set up compression on the Apache server then the transmission sizes would drop even further. That, in my book is a big leap beyond HATS and Webfacing, which add a lot of overhead to the wire.
There seems to be quite a bit of network latency between the state of Utah (where I'm located), and your server in Denmark, so streamlining the messages really helped.
Downloading the ExtJS framework adds about 1 meg at startup (or any time browser cache is cleared). I'm not sure what to say about that, except that I finally chose to write some of my own client code for my own applications rather than have that much overhead.
Very good work.
Nathan.
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