json parsing performance

[Brad Anderson via Digitalmars-d]

On Monday, 6 April 2015 at 20:20:06 UTC, Kingsley wrote:
> I have read that std.json is pretty slow compared to other 
> languages json parsers and I'm about to do a whole stack of 
> json parsing and was wondering if anyone has got any benchmarks 
> to indicate what "slow" means compared to other languages - 
> particularly java, ruby, python?
>
> I want to know whether to roll up the sleeves and write my own 
> json parser focused on performance or if slow just means a few 
> ms slower - which I could live with.

We actually have a JSON parser meant to replace std.json that 
should be very high performance. You can try it out now using dub:

http://code.dlang.org/packages/std_data_json

I used it recently though I didn't do any performance testing. 
The improvements to Algebraic would help make it more pleasant to 
use.