Add 'server/' from commit 'e64421295fff83acbb6d6ab3d3b27f3ef8368f00'

git-subtree-dir: server
git-subtree-mainline: c4e617ada7
git-subtree-split: e64421295f

server/common/cache.go

@@ -0,0 +1,22 @@
+package common
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/gogf/gf/v2/frame/g"
+)
+
+var (
+	cacheTTL     time.Duration
+	cacheTTLOnce sync.Once
+)
+
+// CacheTTL returns the database query cache TTL from config
+func CacheTTL() time.Duration {
+	cacheTTLOnce.Do(func() {
+		cacheTTL = time.Duration(g.Cfg().MustGet(context.Background(), "database.cache.ttl", 60).Int()) * time.Second
+	})
+	return cacheTTL
+}