# Backoff

+ When a request encounters a retryable error, you need to wait for a period of time before retrying. Setting this time too large will increase the delay. If the setting is too small, it will cause many unnecessary retries and consume too much system resources.
+ `tidb_backoff_weight` : The weight of the maximum time of TiDB backoff. Use this variable to adjust the maximum retry time.
+ `tidb_backoff_lock_fast` : The backoff time at which the read request encountered the lock.
------------------------------------------------------------
Backoff
- When a request encounters a retryable error, it is necessary to wait for a period of time before retrying. Setting this time too large will increase the delay. If the setting is too small, it will cause many unnecessary retries and consumes too much system resources
- tidb_backoff_weight
  - The weight of the maximum time of TiDB backoff. Use this variable to adjust the maximum retry time
- tidb_backoff_lock_fast
  - backoff time when the read request encountered the lock