glazer started as a blazing-fast NIF JSON codec (single-pass, straight to/from native terms - no AST). In 0.3.0, the same engine now parses and encodes YAML and CSV too.

The numbers:

• JSON: faster encoding than everything I tried - jason, thoas, euneus, torque, jiffy, simdjsone, OTP json- and neck-and-neck with torque (Rust sonic-rs) on decoding

• YAML: 10x faster than yaml_rustler/fast_yaml, up to 100x faster than yamerl/ymlr

• CSV: 2-20x faster than nimble_csv, and csv/erl_csv don’t even finish on large files (timeout) while glazer is done

Plus: streaming decode for JSON/CSV, bignums support, configurable null, zero external C++ deps.

def deps do
  [
    {:glazer, "~> 0.3"}
  ]
end

Charts and full benchmarks: https://github.com/saleyn/glazer#performance
Hex: https://hex.pm/packages/glazer

Break it, measure it, tell me what’s slow.

Best,
Serge