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config-map_test.go
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config-map_test.go
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package cmap
import (
"fmt"
"sync/atomic"
"testing"
"time"
)
var value int64 = 1
func dbValue() int64 {
return value
}
func printvalue() {
fmt.Println(dbValue())
}
// 每隔1秒,自增1
func changing() {
go func() {
for {
time.Sleep(1 * time.Second)
atomic.AddInt64(&value, 1)
}
}()
}
var cm = NewConfigMap(nil, 4, 30*time.Minute)
func GetDBValue() (int64, bool) {
var key = fmt.Sprintf("testconfigmap:%s", "dbvalue")
rs, needloading, exist := cm.Get(key)
if needloading {
v := dbValue()
fmt.Println("load db")
cm.SetEx(key, v, 15)
return v, true
}
if exist {
return rs.(int64), true
}
return 0, false
}
func TestNewConfigMap(t *testing.T) {
go changing()
GetDBValue()
time.Sleep(120 * time.Second)
//go func() {
// for {
// time.Sleep(1 * time.Second)
// printvalue()
// }
//}()
go func() {
var i = 0
for {
i++
time.Sleep(500 * time.Millisecond)
r, exist := GetDBValue()
fmt.Println(r, exist)
}
}()
go func() {
for {
time.Sleep(200 * time.Millisecond)
r, exist := GetDBValue()
fmt.Println(r, exist)
}
}()
go func() {
for {
time.Sleep(100 * time.Millisecond)
r, exist := GetDBValue()
fmt.Println(r, exist)
}
}()
select {}
}