operations

Zero-Downtime Changes

Reconfigure routing, users, and backends at runtime — no restarts required.

Architectural Value

Inspired by advanced router design principles, ProxySQL treats its configuration as a live, runtime object. Every parameter — from query rules to hostgroup assignments — can be changed and applied instantly while connections continue to flow.

Key Capabilities

  • Runtime Reconfiguration: Modify query rules, backend pools, and user credentials without interrupting traffic.
  • Atomic Config Promotion: Changes are staged and validated before being promoted to the active runtime state.
  • Rolling Updates: Safely drain and swap backend nodes during maintenance or deployments without client disruption.

Implementation

Learn how to configure this feature in your ProxySQL instance.

View Technical Docs

Architectural Review

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