Hauptbuch

A plain-text double-entry accounting system written in Rust

Uses the same journal format as tackler.

Goals

• Fast
• Simple
• Correct

Performance

Hauptbuch is really fast and runs on low memory! Single file performance of balancing 1E6 (one million) transactions is ~1.3 seconds (3 MB memory usage, single core). Benchmarks of Tackler on the other hand report for the same dataset ~30 seconds and peak memory usage of around 6-7 GB!!! My own tests indicate that Hauptbuch is ~200 times faster (on single-core) and ~700 times more memory efficient. With 16 GB of RAM, Tackler failed to balance the 1E6 transactions.