0.5.0 - 2026-08-04

Added explicit batch durability through write_batch/3 and synchronous or non-synchronous WAL boundaries through flush_wal/2.
Added bounded iterator_take/2 pages with entry/payload limits and stable snapshot/iterator continuation.
Moved storage- and lock-backed native operations to dirty I/O schedulers.
Added idempotent close/1 with safe iterator/snapshot lease handling and stable :closed/:resource_busy errors.
Corrected iterator terminal and database-option documentation.
Breaking validation change: unknown database, read, write, and iterator option keys now return {:error, {:unknown_option, key}} instead of being silently ignored. Malformed database/read values identify the invalid key.
Added canonical option and 0.5.0 migration references. Existing RocksDB files require no migration.

0.4.1 - 2026-07-27

Reworked the README with concise, tested examples for key/value operations, atomic batches, multi-get, and column families.
Added prominent links to the comprehensive ExRocket cheatsheet.
Explicitly included CHEATSHEET.md in Hex package and ExDoc output.

Updated the native storage integration to rust-rocksdb 0.51, bundling RocksDB 11.1.2.
Preserved the established ExRocket API.
Added precompiled NIFs for ARM64 and x86-64 Linux with glibc or musl, including Alpine Linux smoke tests.
Raised the source-build requirement to Rust 1.91.

Dependencies: Upgraded rust-rocksdb from 0.22.0 to 0.24.0
- Latest RocksDB features and performance improvements
- Enhanced stability and bug fixes from upstream
Build Requirements: Updated minimum Rust version to 1.85+
- Required for rust-rocksdb 0.24.0 compatibility
- Ensures access to latest Rust compiler optimizations
CI/CD Improvements: Added comprehensive caching to GitHub Actions
- Mix dependencies caching for faster builds
- Rust/Cargo dependencies caching
- Build artifacts caching for improved CI performance
- Updated actions to latest versions (@v4)
Added comprehensive RocksDB merge operator support
- Three merge operators: counter, erlang term, and bitset
- Support for tuple-based operations: {:int_add, value}, {:list_append, list}, {:binary_append, data}, etc.
- Column family merge operations with merge_cf/4 and merge_cfb/4
Added binary helper functions for ETF serialization
- getb/2 and get_cfb/3 for automatic term deserialization
- mergeb/3 and merge_cfb/4 for automatic term serialization
NEW: Merge operations support in batch writes
- Added {:merge, key, operand} and {:merge_cf, cf, key, operand} to write_batch/2
- Atomic batch operations combining puts, deletes, and merges
Added comprehensive cheatsheet documentation (CHEATSHEET.md)
Complete test coverage for all merge operations