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Table Cache

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Aikesheng Open Source Community
Aikesheng Open Source Community
May 29, 2020 · Databases

Understanding MySQL Table Cache: Experimental Verification and Operational Recommendations

This article experimentally demonstrates how MySQL's table cache works, showing that it reduces file‑system reads of table definition files, operates per thread, and explains the recommended table_open_cache sizing formula based on concurrency and join complexity.

CacheDatabase TuningMySQL
0 likes · 4 min read
Understanding MySQL Table Cache: Experimental Verification and Operational Recommendations
Aikesheng Open Source Community
Aikesheng Open Source Community
Sep 23, 2019 · Databases

Analysis of MySQL FTWRL (Flush Table With Read Lock) Blocking Behavior

This article examines how MySQL's FLUSH TABLE WITH READ LOCK command can cause blocking, detailing two cases where global read locks or table cache flushes stall other operations, explaining the underlying MDL lock mechanisms, table cache handling, and providing code examples and debugging insights.

DebuggingFTWRLMetadata Locks
0 likes · 20 min read
Analysis of MySQL FTWRL (Flush Table With Read Lock) Blocking Behavior