LeanLmdb 0.3.0 adds three opt-in capabilities while preserving raw binary behavior and durable defaults:
- configurable
read_ahead: false(MDB_NORDAHEAD) with compatibility and benchmark reporting; - versioned Elixir value codecs, transparent CRUD/scans/batches, deterministic logical CAS, raw migration access, and the bounded safe
LeanLmdb.Codecs.ErlangTerm; and - a supervised bounded FIFO
LeanLmdb.BatchWriterwith producer-side encoding, overload control, group commit, commit-only flush, forced sync, graceful stop, and conservative unknown-worker-outcome semantics with no automatic retry.
Cross-feature tests cover every durability mode, read-ahead, codecs, independent BatchWriters in multiple BEAM OS processes, worker death before/during/after commit, and explicit relaxed-mode checkpoints. Benchmarks now label BatchWriter acknowledgment boundaries and report codec sizes, queue high-water marks, dispatch reasons, and p50/p95/p99 without machine-dependent CI thresholds.
Every attached NIF 2.16 archive was built from commit 44060a9094828951a6b5fef5133f0978c399133b and directly smoke-tested on its matching runtime before atomic publication. The seven SHA-256 values are pinned by checksum-Elixir.LeanLmdb.Native.exs in the follow-up source commit.