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postgresql - HikariCP: Why does connection leak and unleak result in "connection attempt timed out" for new DB connection? - Stack Overflow
Maximum Connection Pool Size in production/Load testing · Issue #330 · brettwooldridge/HikariCP · GitHub
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30001ms · Issue #1580 ...
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