Hello everybody.
I have just released Jason - a new JSON library.
You might be wondering, why do we need a new library? The primary focus of Jason is speed. And it it fast, really fast, usually twice as fast as Poison on both decoding and encoding and much closer to the performance of jiffy (which is implemented in C) - in some situations even faster.
Another goal was to retain maximal compatibility with Poison, so it could be a drop-in replacement as much as possible. The only places where compatibility was broken were done for speed and in minor features. The documentation outlines those differences, how to remedy them, and how to use Jason with Phoenix, Plug, Ecto, Postgrex and Absinthe.
Both parser and generator fully conform to RFC 8259 and ECMA 404 standards. The parser is tested using JSONTestSuite and some property tests with the wonderful StreamData library.
Source: GitHub - michalmuskala/jason: A blazing fast JSON parser and generator in pure Elixir. · GitHub
Docs: jason v1.4.5 — Documentation
Benchmarks: decode-20-hipe.txt · GitHub, http://michal.muskala.eu/jason/decode.html and http://michal.muskala.eu/jason/encode.html
PS. I’m planning on writing a blog post about how I made it this fast 
