*: add slow log control variables (`tidb_slow_log_rules`, `tidb_slow_log_max_per_sec`) and hint `WRITE_SLOW_LOG`#21009

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zimulala:zimuxia/slow-log

Jan 21, 2026

Commits on Oct 17, 2025

*: add two variables tidb_slow_log_rules and tidb_slow_log_max_per_sec
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*: add WRITE_SLOW_LOG hint
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*: add test info and tiny update
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*: address a comment
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*: add version
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