Simon Willison: SQLite WAL Mode Across Docker Containers Sharing a Volume — Practical Research
Simon Willison's Blog·medium signal
Simon Willison published a deep technical investigation into whether SQLite WAL mode works correctly across Docker containers sharing the same volume, prompted by a Hacker News discussion. This is directly relevant to anyone running SQLite-backed applications in containerized environments — a common pattern for AI agent systems, LangChain deployments, and local-first architectures. The post provides concrete findings on file-locking behavior and consistency guarantees across container boundaries.