# Tiflash Key Features: Consistency Read (Continued...)

![left](./student-guide/diagram/TiFlashConsistencyRead04_aa_001_20220513.png)

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At the time of T3, TiFlash checks the current sequence number (raft log index) of the raft log in TiKV in order to satisfy the client's read, and obtains the raft log whose key = 1 has a raft log index value of 125 and key = 999 The index value is 31.