Revision history for Data-CuckooFilter-Shared

0.06      2026-09-26
          - remove after an add killed mid-way no longer wraps the count and
            bricks the file.
          - DATA_CUCKOOFILTER_SHARED_SPARSE=0 reserves segments up front, so a
            full filesystem fails the constructor, not a later write.
          - A failed create no longer leaves a full-size file behind.

0.05      2026-09-15
          - Recover a lock left ownerless by a corrupt file instead of hanging.
          - Fix a writer stall on ARM64 after readers release.

0.04      2026-08-11
          - freeze()/new_readonly(): sealed read-only mode, lock-free.
          - A file left by an interrupted create is recovered, not refused.
          - unlink() reports a failed removal; a missing file is no error.
          - Hardening against tied and overloaded arguments.

0.03      2026-07-23
          - On-disk format change (v1 -> v2): recreate 0.02 files.
          - Resolve argument magic before capturing the path or class name.
          - Document that a crash mid-eviction can drop a fingerprint.

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.

0.01      2026-06-25
          - Initial release.