# Thread States

- [Delayed Insert Connection Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/delayed-insert-connection-thread-states.md)
- [Delayed Insert Handler Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/delayed-insert-handler-thread-states.md)
- [Event Scheduler Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/event-scheduler-thread-states.md)
- [Galera Cluster Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/galera-cluster-thread-states.md)
- [General Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/general-thread-states.md)
- [Master Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/master-thread-states.md)
- [Query Cache Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/query-cache-thread-states.md)
- [Replica I/O Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/replica-io-thread-states.md)
- [Replica Connection Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/slave-connection-thread-states.md)
- [Replica SQL Thread States](/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/thread-states/slave-sql-thread-states.md)