v.23.1Improvement

Improvement of Async Insert Deduplication in Memory

Official CH changelog text
Improvement for deduplication of async inserts: when users do duplicate async inserts, we should deduplicate inside the memory before we query Keeper. #44682 (Han Fei).
Enhanced deduplication for asynchronous inserts by performing in-memory deduplication before querying Keeper.

Why it matters

To improve the efficiency and performance of handling duplicate asynchronous inserts by reducing unnecessary queries to Keeper, thereby decreasing latency and load on the coordination service.

How to use it

The feature is applied automatically when using asynchronous inserts; users do not need to enable anything explicitly. Duplicate async inserts will be deduplicated in memory prior to querying Keeper.

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