add v8.5.5 release notes (#22190)#22332

Merged

qiancai merged 77 commits intopingcap:release-8.5from

ti-chi-bot:cherry-pick-22190-to-release-8.5

Jan 15, 2026

Commits on Jan 15, 2026

Create release-8.5.5.md

qiancai
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add feature description for #56522 and #58685

qiancai
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Added descriptions for additional changes included in the release

benmeadowcroft
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Apply suggestions from code review

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add two info

qiancai
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Update releases/release-8.5.5.md

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add improvements and bug fixes

qiancai
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add more features and adjust the feature order

qiancai
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Update releases/release-8.5.5.md

qiancai
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Apply suggestions from code review

qiancai
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update INDEX_LOOKUP_PUSHDOWN

Oreoxmt
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Apply suggestions from code review

hfxsd
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add the feature description for storage engine identifiers

qiancai
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Update releases/release-8.5.5.md

hfxsd
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add cdc bug fixes

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add improvements and bug fixes for SQL data

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move ticdc #12253 from bug fixes to improvements

qiancai
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add BR bug fixes

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Compatibility changes: add tidb_index_lookup_pushdown_policy

Oreoxmt
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add improvements and bug fixes for coprocessor/TiKV /engine/raft

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Apply suggestions from code review

qiancai
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translate #63366

qiancai
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translate two features

qiancai
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Update releases/release-8.5.5.md

qiancai
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Refine wording

lilin90
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Update releases/release-8.5.5.md

qiancai
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Apply suggestions from code review

qiancai
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add release notes from the zh PR

qiancai
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add tw info for improvements and bug fixes

qiancai
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add a bug fix for TiDB

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Apply suggestions from code review

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add parameter changes

qiancai
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add links to variables

qiancai
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update PD, TiKV, BR

Oreoxmt
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Update releases/release-8.5.5.md

hfxsd
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Apply suggestions from code review

hfxsd
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Apply suggestions from code review

hfxsd
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Apply suggestions from code review

hfxsd
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update the compatibility info

qiancai
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translate TiDB improvements and PD bug fixes

qiancai
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translate TiCDC improvements and bug fixes

qiancai
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Apply suggestions from code review

qiancai
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add the default value of tidb_analyze_column_options

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Apply suggestions from code review

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add readpool.cpu-threshold

qiancai
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Apply suggestions from code review

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Update wording

lilin90
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Update releases/release-8.5.5.md

qiancai
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Refine wording

lilin90
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Apply suggestions from code review

Oreoxmt
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Refine wording and format

lilin90
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update tidb_analyze_column_options

qiancai
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Compatibility changes: sync changes from zh

qiancai
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Apply suggestions from code review

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change the default value of enable-async-batch-get to false for 8.5.5

qiancai
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Apply suggestions from code review

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remove inline tag comments

qiancai
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add TOC related changes

qiancai
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fix build errors

qiancai
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Update releases/release-8.5.5.md

qiancai
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Update releases/release-8.5.5.md

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fix issue numbers

qiancai
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remove a duplicated #58985 for the same issue

qiancai
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fix a format issue

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Update releases/release-8.5.5.md

hfxsd
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fix a format issue

qiancai
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fix format issues

qiancai
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fix format issues

qiancai
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Update releases/release-8.5.5.md

qiancai
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Apply suggestions from code review

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Update releases/release-8.5.5.md

qiancai
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Update releases/release-8.5.5.md

qiancai
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update the release date

qiancai
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Update releases/release-8.5.5.md
qiancai
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Update releases/release-8.5.5.md
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Merge branch 'release-8.5' into pr/22332
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