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Rust library implementing xor-filters
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README.md

Rust library implementing xor filters

Implementation of Xor Filters: Faster and Smaller Than Bloom and Cuckoo Filters in rust-lang, Journal of Experimental Algorithmics (to appear).

This package is a port from its golang implementation.

Open issues

  • Serialize / Deserialize Xor8 type.
  • Incrementally adding keys to a pre-built Xor8 instance.

Benchmarks

Benchmark number for original golang implementation.

BenchmarkPopulate100000-32          2000            695796 ns/op
BenchmarkContains100000-32      200000000                7.03 ns/op

Benchmark number for this rust-lang implementation.

test bench_populate_100000 ... bench:     274,349 ns/iter (+/- 18,650)
test bench_contains_100000 ... bench:           7 ns/iter (+/- 0)

Measure of false-positive-rate and bits-per-entry in original golang implementation, using random set of keys.

bits per entry  9.864
false positive rate  0.3874

Measure of false-positive-rate and bits-per-entry in this rust-lang implementation, using random set of keys.

bits per entry 9.864 bits
false positive rate 0.3866%

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