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Description
This is a proposal to add MaxIdleConnections to DBStats.
Currently, DBStats exports the following metrics:
type DBStats struct {
MaxOpenConnections int // Maximum number of open connections to the database.
// Pool Status
OpenConnections int // The number of established connections both in use and idle.
InUse int // The number of connections currently in use.
Idle int // The number of idle connections.
// Counters
WaitCount int64 // The total number of connections waited for.
WaitDuration time.Duration // The total time blocked waiting for a new connection.
MaxIdleClosed int64 // The total number of connections closed due to SetMaxIdleConns.
MaxIdleTimeClosed int64 // The total number of connections closed due to SetConnMaxIdleTime.
MaxLifetimeClosed int64 // The total number of connections closed due to SetConnMaxLifetime.
}
We had issues where our applications were configured with a MaxOpenConnections != MaxIdleConnections, leading to a lot of connection churning to the DB.
MaxOpenConnections is already available in the stats but MaxIdleConnections is missing, making it hard to track affected applications.
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