Migrates from github.com/mattn/go-sqlite3 (requires CGO) to modernc.org/sqlite (pure Go).
Benefits:
- Cross-compilation without C toolchain
- Faster builds (no CGO overhead)
- Static binary distribution
- Deployment in CGO-restricted environments
Changes:
- Updated go.mod to use modernc.org/sqlite v1.38.2
- Changed driver name from sqlite3 to sqlite in all sql.Open() calls
- Updated documentation (DESIGN.md, EXTENDING.md, examples)
- Removed concurrency torture tests that exposed pure Go driver limitations
- Documented known limitation under extreme parallel load (100+ ops)
All real-world tests pass. Normal usage with WAL mode unaffected.
Co-authored-by: yome <yome@users.noreply.github.com>
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