# Hot Table Cache - Principle
+ Lease expires, data expires
+ Writes are no longer blocked
+ reads and writes directly to the TiKV node

![left](./student-guide/diagram/CachedTablesPrinciple03_aa_001_20220515.png)

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When the lease expires, the data in the cache also expires. At this time, all read operations will get data from the TiKV node, and write operations can also be performed.