fix: memory leak when gcache.NewAdapterMemory with lru (#3241)

os/gcache/gcache_adapter_memory.go

@@ -67,6 +67,9 @@ func NewAdapterMemory(lruCap ...int) Adapter {
 		c.cap = lruCap[0]
 		c.lru = newMemCacheLru(c)
 	}
+	// Here may be a "timer leak" if adapter is manually changed from memory adapter.
+	// Do not worry about this, as adapter is less changed, and it does nothing if it's not used.
+	gtimer.AddSingleton(context.Background(), time.Second, c.syncEventAndClearExpired)
 	return c
 }
 

os/gcache/gcache_cache.go

@@ -8,9 +8,7 @@ package gcache
 
 import (
 	"context"
-	"time"
 
-	"github.com/gogf/gf/v2/os/gtimer"
 	"github.com/gogf/gf/v2/util/gconv"
 )
 
@@ -29,9 +27,6 @@ func New(lruCap ...int) *Cache {
 	c := &Cache{
 		localAdapter: memAdapter,
 	}
-	// Here may be a "timer leak" if adapter is manually changed from memory adapter.
-	// Do not worry about this, as adapter is less changed, and it does nothing if it's not used.
-	gtimer.AddSingleton(context.Background(), time.Second, memAdapter.(*AdapterMemory).syncEventAndClearExpired)
 	return c
 }