Changes for version 0.02 - 2026-07-09

  • Security and robustness hardening; backing files now created mode 0600 (pass a file-mode argument to new() for cross-user sharing).
  • New count_of($item) method: occurrence count 0..8 (times added minus removed), saturating at 2*slots_per_bucket. Lets the filter double as a small counting set without a counting Bloom filter's overhead.

Modules

shared-memory Cuckoo filter for Linux