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71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package cache
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import (
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"sync/atomic"
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"time"
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"github.com/tal-tech/go-zero/core/logx"
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)
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const statInterval = time.Minute
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// A Stat is used to stat the cache.
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type Stat struct {
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name string
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// export the fields to let the unit tests working,
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// reside in internal package, doesn't matter.
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Total uint64
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Hit uint64
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Miss uint64
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DbFails uint64
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}
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// NewStat returns a Stat.
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func NewStat(name string) *Stat {
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ret := &Stat{
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name: name,
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}
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go ret.statLoop()
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return ret
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}
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// IncrementTotal increments the total count.
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func (s *Stat) IncrementTotal() {
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atomic.AddUint64(&s.Total, 1)
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}
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// IncrementHit increments the hit count.
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func (s *Stat) IncrementHit() {
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atomic.AddUint64(&s.Hit, 1)
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}
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// IncrementMiss increments the miss count.
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func (s *Stat) IncrementMiss() {
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atomic.AddUint64(&s.Miss, 1)
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}
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// IncrementDbFails increments the db fail count.
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func (s *Stat) IncrementDbFails() {
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atomic.AddUint64(&s.DbFails, 1)
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}
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func (s *Stat) statLoop() {
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ticker := time.NewTicker(statInterval)
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defer ticker.Stop()
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for range ticker.C {
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total := atomic.SwapUint64(&s.Total, 0)
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if total == 0 {
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continue
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}
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hit := atomic.SwapUint64(&s.Hit, 0)
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percent := 100 * float32(hit) / float32(total)
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miss := atomic.SwapUint64(&s.Miss, 0)
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dbf := atomic.SwapUint64(&s.DbFails, 0)
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logx.Statf("dbcache(%s) - qpm: %d, hit_ratio: %.1f%%, hit: %d, miss: %d, db_fails: %d",
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s.name, total, percent, hit, miss, dbf)
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}
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}
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