SQLmem/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

[Unreleased]

Added

• Project specification in project.md — architecture, API design, cache backend, metadata schema, logging strategy, and TODO for future features (JOIN, SELECT * support)
• .gitignore for Python/Poetry project
• pyproject.toml dependencies: sqlglot, sqlalchemy, loguru, python-dotenv; dev dependencies: pytest, ruff, mypy
• src/sqlmem/ package structure with src layout
• src/sqlmem/exceptions.py — ReadOnlyError (blocks INSERT/UPDATE/DELETE), UnsupportedQueryError (blocks JOIN and SELECT *)
• src/sqlmem/config.py — loads .env, configures loguru with DEBUG/INFO level based on SQLMEM_DEBUG
• src/sqlmem/_meta.py — package version constant
• src/sqlmem/parser.py — SQL Parser using sqlglot; extracts table and columns from SELECT, raises on writes/JOIN/wildcard
• src/sqlmem/registry.py — Column Registry; accumulates requested columns per table, detects missing columns requiring re-fetch
• src/sqlmem/cache.py — Cache Manager; SQLite in-memory storage, load from cache.db on startup (with schema version check), hourly backup thread, atexit/SIGTERM flush, metadata tables (_sqlmem_meta, _sqlmem_tables, _sqlmem_columns)
• src/sqlmem/executor.py — Query Executor; cache hit/miss logic, re-fetch on new columns with WARNING log
• src/sqlmem/engine.py — CachingEngine wrapper; public API compatible with SQLAlchemy, invalidate(table) for manual cache clearing
• src/sqlmem/__init__.py — public exports: CachingEngine, ReadOnlyError, UnsupportedQueryError
• tests/test_parser.py — parser tests: SELECT parsing, ReadOnlyError, UnsupportedQueryError
• tests/test_cache.py — cache tests: load, data correctness, metadata, disk backup/reload
• tests/test_registry.py — registry tests: accumulation, needs_refetch, table isolation