gcache Memory leakage

[zhiqyang]

What version of Go and system type/arch are you using?

1.20 windows/intel x86
What version of GoFrame are you using?

v2.7.0

Can this bug be re-produced with the latest release?
YES

What did you do?

func main() {
glog.SetFlags(44)

ctx := context.Background()
cache := gcache.New()

for {
	key := guid.S()
	val := grand.B(10 * 1024 * 1024)
	err := cache.Set(ctx, key, val, 30*time.Minute)
	if err != nil {
		glog.Fatal(ctx, err)
	}

	_, err = cache.Remove(ctx, key)
	if err != nil {
		glog.Error(ctx, "delete failed", err)
	}

	time.Sleep(time.Millisecond * 10)
}

}

What did you expect to see?

What did you see instead?
问题： 持续运行上述代码，内存会不断增加。

检查源码 发现当调用 func (c *AdapterMemory) Remove(ctx context.Context, keys ...interface{})接口时，会将过期时间设置为 gtime.TimestampMilli()-1000000，，并放入事件列表eventList中
在syncEventAndClearExpired 接口，只会对当前时间的前5秒的的数据进行清空
eks = []int64{ek - 1000, ek - 2000, ek - 3000, ek - 4000, ek - 5000}

因此，对于Remove掉的缓存，在expireSets里面会一直保留一份key值，导致内存会缓慢增加

[zhiqyang]

Showing top 10 nodes out of 11
flat flat% sum% cum cum%
1078.34kB 41.13% 41.13% 1078.34kB 41.13% github.com/gogf/gf/v2/os/gcache.(*adapterMemoryExpireTimes).Set
1027.94kB 39.21% 80.35% 1027.94kB 39.21% github.com/gogf/gf/v2/container/gset.(*Set).Add
515.19kB 19.65% 100% 515.19kB 19.65% unicode/utf16.Encode
0 0% 100% 515.19kB 19.65% fmt.Fprintln
0 0% 100% 515.19kB 19.65% fmt.Println (inline)
0 0% 100% 2621.47kB 100% github.com/gogf/gf/v2/os/gcache.(*AdapterMemory).syncEventAndClearExpired
0 0% 100% 2621.47kB 100% github.com/gogf/gf/v2/os/gtimer.(*Entry).Run.func1
0 0% 100% 515.19kB 19.65% internal/poll.(*FD).Write
0 0% 100% 515.19kB 19.65% internal/poll.(*FD).writeConsole
0 0% 100% 515.19kB 19.65% os.(*File).Write

[gqcn]

Let me have a check.