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@sunxiaoguang sunxiaoguang commented Dec 20, 2025

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What is changed, added or deleted? (Required)

Dual-layer encryption is mentioned in https://www.pingcap.com/tidb-cloud-essential-pricing-details/ but it is not explained anywhere in documentation. So this PR adds the explanation for it.

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Signed-off-by: Xiaoguang Sun <sunxiaoguang@gmail.com>
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Summary of Changes

Hello @sunxiaoguang, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the TiDB Cloud security documentation by introducing a comprehensive explanation of dual-layer encryption. The update aims to provide users with a clearer understanding of how their data is protected at rest, detailing the mechanisms and applicability across different TiDB Cloud cluster types. This improves the clarity and completeness of the security concepts documentation.

Highlights

  • Dual-layer Encryption Explanation: A new section has been added to the security-concepts.md documentation, providing a detailed explanation of dual-layer encryption.
  • Cluster-specific Encryption Details: The new content clarifies the definition of dual-layer encryption, how data is encrypted at rest, and its default or mandatory status for Starter, Essential, and Dedicated TiDB Cloud clusters.

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@ti-chi-bot ti-chi-bot bot added missing-translation-status This PR does not have translation status info. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Dec 20, 2025
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Code Review

This pull request adds a helpful explanation of dual-layer encryption to the security concepts documentation. My review provides a few suggestions to improve the clarity, conciseness, and flow of the new content, ensuring it aligns with the repository's style guide. The proposed changes aim to make the explanation of the two encryption layers more explicit and improve overall readability.

sunxiaoguang and others added 2 commits December 20, 2025 12:57
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
@lilin90 lilin90 added area/tidb-cloud This PR relates to the area of TiDB Cloud. translation/no-need No need to translate this PR. labels Dec 22, 2025
@ti-chi-bot ti-chi-bot bot removed the missing-translation-status This PR does not have translation status info. label Dec 22, 2025
@lilin90 lilin90 self-assigned this Dec 22, 2025

- Dual-layer encryption is disabled by default for {{{ .starter }}} clusters and enabled by default for {{{ .essential }}} clusters.

- Dual-layer encryption is mandatory for TiDB Cloud Dedicated clusters.
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@nicole-yc PTAL

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@qiancai qiancai Dec 22, 2025

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This sentence is ambiguous and can be interpreted in two different ways:

  • Dual-layer encryption is enabled by default for TiDB Cloud Dedicated clusters, and users should not disable it.
  • Dual-layer encryption is enabled by default for TiDB Cloud Dedicated clusters, and users cannot disable it.

@lilin90 lilin90 requested a review from qiancai December 22, 2025 03:23
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ti-chi-bot bot commented Dec 22, 2025

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please ask for approval from lilin90. For more information see the Code Review Process.
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**Dual-layer encryption**

- Dual-layer encryption protects data with two or more independent layers of encryption. This method provides enhanced security by protecting against the compromise of any single encryption layer.
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Not sure if we need to remove "or more" here as there are only two layers in the context of this doc


- Dual-layer encryption is disabled by default for {{{ .starter }}} clusters and enabled by default for {{{ .essential }}} clusters.

- Dual-layer encryption is mandatory for TiDB Cloud Dedicated clusters.
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@qiancai qiancai Dec 22, 2025

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This sentence is ambiguous and can be interpreted in two different ways:

  • Dual-layer encryption is enabled by default for TiDB Cloud Dedicated clusters, and users should not disable it.
  • Dual-layer encryption is enabled by default for TiDB Cloud Dedicated clusters, and users cannot disable it.

@lilin90 lilin90 requested review from likidu and ljun0712 December 24, 2025 02:49
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