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| title: TiDB 8.5.0 Release Notes | ||
| summary: Learn about the new features, compatibility changes, improvements, and bug fixes in TiDB 8.5.0. | ||
| --- | ||
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| # TiDB 8.5.0 Release Notes | ||
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| Release date: xx xx, 2024 | ||
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| TiDB version: 8.5.0 | ||
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| Quick access: [Quick start](https://docs.pingcap.com/tidb/v8.5/quick-start-with-tidb) | [Production deployment](https://docs.pingcap.com/tidb/v8.5/production-deployment-using-tiup) | ||
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| TiDB 8.5.0 is a Long-Term Support Release (LTS). | ||
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| Compared with the previous LTS 8.1.0, 8.5.0 includes new features, improvements, and bug fixes released in [8.2.0-DMR](/releases/release-8.2.0.md), [8.3.0-DMR](/releases/release-8.3.0.md), and [8.4.0-DMR](/releases/release-8.4.0.md). When you upgrade from 8.1.x to 8.5.0, you can download the [TiDB Release Notes PDF](https://download.pingcap.org/tidb-v8.1-to-v8.5-en-release-notes.pdf) to view all release notes between the two LTS versions. The following table lists some highlights from 8.1.0 to 8.5.0: | ||
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| <!--Highlights table: ToDo--> | ||
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| ## Feature details | ||
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| ### Scalability | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Performance | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Reliability | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Availability | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### SQL | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### DB operations | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Observability | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Security | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ### Data migration | ||
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| * Placeholder for feature summary [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) **tw@xxx** <!--1234--> | ||
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| Provide a concise overview of what the feature is, the value it offers to users, and include a brief sentence on how to use it effectively. If there are any particularly important aspects of this feature, be sure to mention them as well. | ||
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| For more information, see [Documentation](link). | ||
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| ## Compatibility changes | ||
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| > **Note:** | ||
| > | ||
| > This section provides compatibility changes you need to know when you upgrade from v8.1.0 to the current version (v8.2.0). If you are upgrading from v8.0.0 or earlier versions to the current version, you might also need to check the compatibility changes introduced in intermediate versions. | ||
| ### Behavior changes | ||
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| ### MySQL compatibility | ||
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| ### System variables | ||
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| | Variable name | Change type | Description | | ||
| |--------|------------------------------|------| | ||
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| ### Configuration parameters | ||
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| | Configuration file or component | Configuration parameter | Change type | Description | | ||
| | -------- | -------- | -------- | -------- | | ||
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| ### System tables | ||
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| ### Other changes | ||
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| ## Offline package changes | ||
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| ## Removed features | ||
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| ## Deprecated features | ||
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| * The following features are planned for deprecation in future versions: | ||
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| ## Improvements | ||
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| + TiDB | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiKV | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + PD | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiFlash | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + Tools | ||
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| + Backup & Restore (BR) | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiCDC | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiDB Data Migration (DM) | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiDB Lightning | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiUP | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| ## Bug fixes | ||
|
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| + TiDB | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiKV | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + PD | ||
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiFlash | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + Tools | ||
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| + Backup & Restore (BR) | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiCDC | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiDB Data Migration (DM) | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
|
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||
| + TiDB Lightning | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| + TiUP | ||
|
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| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
| - note [#Issue-number](issue-link) @[Contributor-GitHub-ID](id-link) | ||
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| ## Contributors | ||
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| We would like to thank the following contributors from the TiDB community: | ||
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| - [Contributor-GitHub-ID](id-link) |