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

![left](./student-guide/diagram/TiFlashConsistencyRead06_aa_001_20220513.png)

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At the T4 moment, TiFlash waited until the raft log index of key = 999 was 31 and confirmed that the value of key = 999 must have been copied, so it read the value 7 of key = 999.