MVCC Guide (Experimental) Multi-Version Concurrency Control. Work in progress, not production-ready. CRITICAL : Ignore MVCC when debugging unless the bug is MVCC-specific. Enabling MVCC Runtime configuration, not a compile-time feature flag. Per-database setting. How It Works Standard WAL: single version per page, readers see snapshot at read mark time. MVCC: multiple row versions, snapshot isolation. Each transaction sees consistent snapshot at begin time. Key Differences from WAL | Aspect | WAL | MVCC | |--------|-----|------| | Write granularity | Every commit writes full pages | Affected…