Storage and Persistence

storage_mode

• pickle: Supports broad Python objects. Safe Pickle is recommended.
• jsonb: MessagePack-style storage for JSON-compatible data.
• json: Human-readable JSON storage.
• bytes: Stores bytes as-is.

persist_mode

• memory: In-process only. Fast, but data is not persisted after exit.
• lazy: Buffers writes and flushes them in batches. Best for throughput.
• writethrough: Persists every write immediately. Best for durability.

Stability notes

Version 2.1.3 hardens failed-flush requeueing, prevents buffered writes from returning after delete/clear, and fixes lazy persistence for separate tables.