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add doc for async-batch-get #22152

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qiancai Dec 5, 2025
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Update tidb-configuration-file.md
qiancai Dec 5, 2025
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Expand Up @@ -637,6 +637,11 @@ Configuration items related to performance.
+ When the value of `force-init-stats` is `true`, TiDB needs to wait until statistics initialization is finished before providing services upon startup. Note that if there are a large number of tables and partitions and the value of [`lite-init-stats`](/tidb-configuration-file.md#lite-init-stats-new-in-v710) is `false`, setting `force-init-stats` to `true` might prolong the time it takes for TiDB to start providing services.
+ When the value of `force-init-stats` is `false`, TiDB can still provide services before statistics initialization is finished, but the optimizer uses pseudo statistics to make decisions, which might result in suboptimal execution plans.

### `enable-async-batch-get` <span class="version-mark">New in v8.5.5 and v9.0.0</span>

+ Controls whether TiDB uses asynchronous mode to execute the Batch Get operator. Using asynchronous mode can reduce goroutine overhead and provide better performance. Generally, there is no need to modify this configuration item.
+ Default value: `true`

## opentracing

Configuration items related to opentracing.
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