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Docsite Preview Bot committed Dec 27, 2024
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Expand Up @@ -72,9 +72,9 @@ TiDB v8.5.0 introduces multiple enhancements to mitigate the impact of cloud dis
- **Leader write optimization**: allows the leader to apply committed Raft logs, reducing IO jitter's effect on write latency for the leader peer.
- **Enhanced slow-node detection**: improves the slow-node detection algorithm, enabling slow score detection by default. This triggers the evict-leader scheduler to restore performance when a slow node is identified.
- **Unified health controller**: adds a unified health controller in TiKV and a feedback mechanism to the KV-client. The KV-client optimizes error handling and replica selection based on TiKV node health and performance.
- **Improved replica selector**: introduces Replica Selector V2 in the KV-client, with refined state transitions that eliminate unnecessary retries and backoff operations.
- **Additional fixes and improvements**: includes enhancements to critical components such as the region cache and KV-client health checker, while avoiding unnecessary IO operations in TiKV's store loop.
- **Unified health controller**: adds a unified health controller in TiKV and a feedback mechanism to the KV client. The KV client optimizes error handling and replica selection based on TiKV node health and performance.
- **Improved replica selector**: introduces Replica Selector V2 in the KV client, with refined state transitions that eliminate unnecessary retries and backoff operations.
- **Additional fixes and improvements**: includes enhancements to critical components such as the region cache and KV client health checker, while avoiding unnecessary IO operations in TiKV's store loop.
### Test environment
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