common/redis增加Lock方法，

redis/redis.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/gogf/gf/v2/database/gredis"
 	"github.com/gogf/gf/v2/frame/g"
@@ -31,6 +32,36 @@ func GetRedisClient() *gredis.Redis {
 	return getClient()
 }
 
+// Lock 分布式锁
+func Lock(ctx context.Context, key string, expireSeconds int64, fn func(ctx context.Context)) {
+	limit := 3
+LOOP:
+	if limit < 0 {
+		return
+	}
+	limit--
+	if val, err := RedisClient.Set(ctx, key, true, gredis.SetOption{
+		TTLOption: gredis.TTLOption{
+			EX: &expireSeconds,
+		},
+		NX: true,
+	}); err != nil {
+		glog.Errorf(ctx, "RedisClient.Lock error: %v", err)
+	} else {
+		if val.Bool() {
+			defer func(RedisClient *gredis.Redis, ctx context.Context, key string) {
+				if _, err = RedisClient.Del(ctx, key); err != nil {
+					glog.Errorf(ctx, "RedisClient.Del error: %v", err)
+				}
+			}(RedisClient, ctx, key)
+			fn(ctx)
+		} else {
+			time.Sleep(time.Second)
+			goto LOOP
+		}
+	}
+}
+
 // RedisClient 导出的 Redis 客户端（供 mongo.go 使用，兼容旧代码）
 var RedisClient = getClient()