Aedes Persistence Redis

Redis-backed persistence plugin for the Aedes MQTT broker. Currently at v11.2.2 (stable, updated ~2024). Release cadence is irregular with frequent minor bumps. Key differentiators: supports Redis clusters, offline message TTL, configurable max session delivery, and uses ioredis internally. Compatible with Node.js >=20. ESM-only since v11. Breaks in v4 changed subscription key schema; see UPGRADE.md.