Posted May 22, 2012 5:34 UTC (Tue) by ringerc (subscriber, #3071)
Of course, not all those need fancy fast asm/intrinsics based speedy parsers. A portable, safe implementation in plain old C does the job fine for most platforms; Pg's build system is designed to selectively build files depending on target platform so optimised versions can be used where available and a general fallback implementation where not.
A big concern to me with using a new JSON optimised/complex implementation would be the need to maintain it, ensuring it was secure, reliable, and stable. Especially in "fast" code it's hard to ensure that everything is checked and safe. Pg users expect bad input to cause a polite error message not a backend crash, so any kind of horrible corrupt JSON you can imagine must be coped with cleanly.
Of course, Pg already has a roll-your-own JSON implementation, so it'd be cool to have something faster so long as it still focused on safety first.
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