Load cache asynchronously

utils/atomic.go

@@ -0,0 +1,17 @@
+package utils
+
+import "sync/atomic"
+
+type AtomicBool struct{ flag int32 }
+
+func (b *AtomicBool) Get() bool {
+	return atomic.LoadInt32(&(b.flag)) != 0
+}
+
+func (b *AtomicBool) Set(value bool) {
+	var i int32 = 0
+	if value {
+		i = 1
+	}
+	atomic.StoreInt32(&(b.flag), i)
+}