pool

type Conn interface {
	GetID() string
	Close(ctx context.Context) error
}

type Option func(*Options)

type Options struct {
	PoolSize         uint32
	IdleSize         uint32
	BreakerThreshold uint32 // 连接失败熔断阈值
	GetQuickFail     bool
	GetConnTimeout   time.Duration
}

type Pool interface {
	Get() (Conn, error)
	Put(ctx context.Context, conn Conn) error
	Remove(ctx context.Context, conn Conn) error
	Close(ctx context.Context) error
	Stats() Stats
}

type Stats struct {
	Hits            uint64
	Misses          uint64
	Removes         uint64
	IDConflicts     uint64
	ErrOverMaxSizes uint64
	Timeouts        uint64
	Breakers        uint64
	ConnCount       uint32
	IdleCount       uint32
}