# When to use In-Memory Pessimistic Lock?

+ Reduce transaction latency
+ Reduce disk and network overhead
+ Reduce CPU consumption of TiKV nodes
+ Pay attention to the issue of lost locks

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The benefits brought to us by the new feature of in-memory pessimistic lock are:
- Reduce transaction latency
- Reduce disk and network resource consumption
- Reduce CPU consumption of TiKV

We need to pay attention to the issue of lock loss, and if this affects the correctness of business logic, the in-memory pessimistic lock should be disabled.