Storage

Last Updated: 2026-02-05

FluxMQ separates storage concerns into three layers:

1. Broker state (storage/): sessions, subscriptions, retained messages, wills, offline queues.
2. Queue logs (logstorage/): append-only logs for durable queues and consumer groups.
3. Cluster metadata (embedded etcd): ownership and routing metadata.

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• Storage internals
• Clustering internals