Set innodb_flush_method=O_DIRECT to eliminate double caching - #115
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Use O_DIRECT to write directly to disk, skipping the OS page cache. In memory-limited containers, the default fsync() causes data to be cached twice (InnoDB buffer pool + OS cache), wasting 30-50% of available memory. Closes #74 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Use
O_DIRECTto write directly to disk, skipping the OS page cache. In memory-limited containers, the defaultfsync()causes data to be cached twice (InnoDB buffer pool + OS cache), wasting 30–50% of available memory.Closes #74