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68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package internal
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import (
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"sync/atomic"
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"time"
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"zero/core/logx"
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)
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const statInterval = time.Minute
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type CacheStat 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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func NewCacheStat(name string) *CacheStat {
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ret := &CacheStat{
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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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func (cs *CacheStat) IncrementTotal() {
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atomic.AddUint64(&cs.Total, 1)
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}
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func (cs *CacheStat) IncrementHit() {
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atomic.AddUint64(&cs.Hit, 1)
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}
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func (cs *CacheStat) IncrementMiss() {
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atomic.AddUint64(&cs.Miss, 1)
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}
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func (cs *CacheStat) IncrementDbFails() {
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atomic.AddUint64(&cs.DbFails, 1)
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}
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func (cs *CacheStat) statLoop() {
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ticker := time.NewTicker(statInterval)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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total := atomic.SwapUint64(&cs.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(&cs.Hit, 0)
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percent := 100 * float32(hit) / float32(total)
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miss := atomic.SwapUint64(&cs.Miss, 0)
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dbf := atomic.SwapUint64(&cs.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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cs.name, total, percent, hit, miss, dbf)
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}
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}
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}
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