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Connection pool sizing Calculator
Size database connection pools from request rate and query time.
Performance & capacityHow it's worked out
- Busy connections = requests/s × queries per request × query time (Little’s Law)
- Queries run sequentially per request; average time stable at peak
NoteOversized pools hurt databases more than undersized ones. Little’s Law gives the concurrency you actually need.
Source: Little (1961); HikariCP pool sizing guidance
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