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MySQL

MySQL limits & metrics

Understand query, storage, bandwidth, connection and timeout limits.

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Plan limits

Plan limits
LimitWhen exceeded
Queries / secondConcurrent query bursts may be limited.
Queries / monthOptimize queries or upgrade when the monthly quota is exhausted.
StorageRemove unneeded data safely or increase capacity as the database fills.
Sent/received dataOversized queries or results may be rejected.
Bandwidth / monthInspect application traffic and plan capacity.
ConnectionsNew connections may be refused; control pool size.
Query timeoutLong queries may time out; add indexes or break them into smaller operations.

Console metrics

Queries, Bandwidth and Storage help distinguish query pressure, stored data growth and large responses. Watch connections as application instances or workers increase.

Timeouts

For long queries, review indexes, paginate results and reduce returned data. If a valid workload still regularly times out after optimization, consider suitable plan capacity.