1BRC in Zig (~4s runtime, < 10MB memory)

[almmiko]

https://github.com/almmiko/1brc-zig

To store stations in sorted order, I've used https://github.com/tidwall/btree.c. However, storing keys in ArrayList and sorting them may perform similarly.

Benchmarks results for Apple M1 Pro 32GB RAM, 10 CPU Cores

hyperfine --warmup 1 "./zig-out/bin/1brc-zig 1brc-zig/measurements.txt > /dev/null"

Benchmark 1: ./zig-out/bin/1brc-zig 1brc-zig/measurements.txt > /dev/null
  Time (mean ± σ):      4.057 s ±  0.049 s    [User: 33.571 s, System: 1.607 s]
  Range (min … max):    3.997 s …  4.135 s    10 runs