Cumulative counters, primarily for tests and diagnostics. More...

#include <SqlPreparedStatementCache.hpp>

Public Attributes
uint64_t	hits {}
	Prepare requests served from the pool, i.e. reusing a handle the server already prepared.

uint64_t	misses {}
	Prepare requests that had to issue `SQLPrepare`.

uint64_t	evictions {}
	Pooled handles freed because the capacity bound was exceeded.

uint64_t	directReuses {}

Detailed Description

Cumulative counters, primarily for tests and diagnostics.

Definition at line 73 of file SqlPreparedStatementCache.hpp.

Member Data Documentation

◆ hits

uint64_t Lightweight::SqlPreparedStatementCache::Statistics::hits {}

Prepare requests served from the pool, i.e. reusing a handle the server already prepared.

Definition at line 76 of file SqlPreparedStatementCache.hpp.

◆ misses

uint64_t Lightweight::SqlPreparedStatementCache::Statistics::misses {}

Prepare requests that had to issue SQLPrepare.

Definition at line 79 of file SqlPreparedStatementCache.hpp.

◆ evictions

uint64_t Lightweight::SqlPreparedStatementCache::Statistics::evictions {}

Pooled handles freed because the capacity bound was exceeded.

Definition at line 82 of file SqlPreparedStatementCache.hpp.

◆ directReuses

uint64_t Lightweight::SqlPreparedStatementCache::Statistics::directReuses {}

Prepare requests a statement served from the handle it was already holding, i.e. a repeat of the query text it last prepared. Like a hit these cost no SQLPrepare, but they never touch the pool: parking the handle only to look that same text back up would be pure overhead.

Definition at line 87 of file SqlPreparedStatementCache.hpp.

Referenced by Lightweight::SqlPreparedStatementCache::RecordDirectReuse().

The documentation for this struct was generated from the following file: