*: fix the default value of cdc.min-ts-interval (#18966) (#18973)

pingcap · Sep 20, 2024 · 939587a · 939587a
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diff --git a/releases/release-6.5.0.md b/releases/release-6.5.0.md
@@ -351,7 +351,7 @@ Compared with TiDB [6.4.0-DMR](/releases/release-6.4.0.md), TiDB 6.5.0 introduce
 | TiDB | [`server-memory-quota`](/tidb-configuration-file.md#server-memory-quota-new-in-v409) | Deprecated | Starting from v6.5.0, this configuration item is deprecated. Instead, use the system variable [`tidb_server_memory_limit`](/system-variables.md#tidb_server_memory_limit-new-in-v640) to manage memory globally. |
 | TiDB | [`disconnect-on-expired-password`](/tidb-configuration-file.md#disconnect-on-expired-password-new-in-v650) | Newly added | Determines whether TiDB disconnects the client connection when the password is expired. The default value is `true`, which means the client connection is disconnected when the password is expired. |
 | TiKV | `raw-min-ts-outlier-threshold` | Deleted | This configuration item was deprecated in v6.4.0 and deleted in v6.5.0. |
-| TiKV | [`cdc.min-ts-interval`](/tikv-configuration-file.md#min-ts-interval)  | Modified | To reduce CDC latency, the default value is changed from `1s` to `200ms`. |
+| TiKV | [`cdc.min-ts-interval`](/tikv-configuration-file.md#min-ts-interval)  | Modified | To reduce CDC latency, the default value is changed from `"1s"` to `"200ms"`. |
 | TiKV | [`memory-use-ratio`](/tikv-configuration-file.md#memory-use-ratio-new-in-v650) | Newly added | Indicates the ratio of available memory to total system memory in PITR log recovery. |
 | TiCDC | [`sink.terminator`](/ticdc/ticdc-changefeed-config.md#changefeed-configuration-parameters) | Newly added | Indicates the row terminator, which is used for separating two data change events. The value is empty by default, which means `\r\n` is used. |
 | TiCDC | [`sink.date-separator`](/ticdc/ticdc-changefeed-config.md#changefeed-configuration-parameters) | Newly added | Indicates the date separator type of the file directory. Value options are `none`, `year`, `month`, and `day`. `none` is the default value and means that the date is not separated. |

diff --git a/releases/release-6.5.1.md b/releases/release-6.5.1.md
@@ -25,6 +25,8 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v6.5/quick-start-with-
 
 - The default value of the TiKV [`advance-ts-interval`](/tikv-configuration-file.md#advance-ts-interval) configuration item is changed from `1s` to `20s`. You can modify this configuration item to reduce the latency and improve the timeliness of the Stale Read data. See [Reduce Stale Read latency](/stale-read.md#reduce-stale-read-latency) for details.
 
+- The default value of the TiKV [`cdc.min-ts-interval`](/tikv-configuration-file.md#min-ts-interval) configuration item is changed from `"200ms"` to `"1s"` to reduce network traffic.
+
 ## Improvements
 
 + TiDB

diff --git a/tikv-configuration-file.md b/tikv-configuration-file.md
@@ -2225,7 +2225,11 @@ Configuration items related to TiCDC.
 ### `min-ts-interval`
 
 + The interval at which Resolved TS is calculated and forwarded.
-+ Default value: `"200ms"`
++ Default value: `"1s"`.
+
+> **Note:**
+>
+> In v6.5.0, the default value of `min-ts-interval` is changed from `"1s"` to `"200ms"` to reduce CDC latency. Starting from v6.5.1, this default value is changed back to `"1s"` to reduce network traffic.
 
 ### `old-value-cache-memory-quota`