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BREAKING CHANGE(storage,engine,server): add session & transaction management, index/query planner, WAL and checksum support; integrate index-accelerated queries and update storage API (findByIds) to enable index optimizations

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Jürgen Kunz
2026-02-01 16:02:03 +00:00
parent 12102255c4
commit bd1764159e
19 changed files with 1973 additions and 86 deletions
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changelog.md
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# Changelog
## 2026-02-01 - 4.0.0 - BREAKING CHANGE(storage,engine,server)
add session & transaction management, index/query planner, WAL and checksum support; integrate index-accelerated queries and update storage API (findByIds) to enable index optimizations
- Add SessionEngine with session lifecycle, auto-abort of transactions on expiry and session tracking in CommandRouter and AdminHandler.
- Introduce TransactionEngine integrations in CommandRouter and AdminHandler; handlers now support start/commit/abort transaction workflows.
- Add IndexEngine enhancements including a simple B-tree and hash map optimizations; integrate index usage into Find/Count/Insert/Update/Delete handlers for index-accelerated queries and index maintenance on mutations.
- Add QueryPlanner to choose IXSCAN vs COLLSCAN and provide explain plans.
- Add WAL (write-ahead log) for durability, with LSNs, checkpoints and recovery APIs.
- Add checksum utilities and FileStorageAdapter support for checksums (enableChecksums/strictChecksums), with verification on read and optional strict failure behavior.
- IStorageAdapter interface changed to include findByIds; MemoryStorageAdapter and FileStorageAdapter implement findByIds to support index lookups.
- Exported API additions: WAL, QueryPlanner, SessionEngine, checksum utilities; CommandRouter now caches IndexEngines and exposes transaction/session engines.
- Breaking change: the IStorageAdapter interface change requires third-party storage adapters to implement the new findByIds method.
## 2026-02-01 - 3.0.0 - BREAKING CHANGE(tsmdb)
rename CongoDB to TsmDB and relocate/rename wire-protocol server implementation and public exports