zig-json

zig-json is a zig program with an optimized JSON parsing implementation. It only parses to a JsonValue enum, not to a Zig struct, but it ends up being around twice as fast as std.json.Parser on some benchmarks.

This is a research project, it is not tested for production, but only provided as an example zig program to optimize. Suggestions for improving reliability, speed or memory usage are welcome.

For more information, read my blog post.

Benchmarks

Each command was run several times, with the best time taken. The zsh time utility with a $TIMEFMT that shows memory was used for benchmarking.

file	json implementation	max memory (KB)	time (secs)
tests/ascii_strings.json	zig-json	100096	0.033
tests/ascii_strings.json	std.json	87232	0.152
tests/numbers.json	zig-json	94064	0.058
tests/numbers.json	std.json	220432	0.091
tests/random.json	zig-json	206512	0.154
tests/random.json	std.json	380240	0.300
tests/food.json	zig-json	1424	0.003
tests/food.json	std.json	1536	0.003
tests/geojson.json	zig-json	51104	0.031
tests/geojson.json	std.json	78944	0.038

A Broch Web Solutions project

README

zig-json

Benchmarks