bugfix

internal/redisdao/notification.go

@@ -22,15 +22,6 @@ end
 return v
 `)
 
-// notificationUnreadDecrScript 未读数 -1，保证结果不低于 0
-var notificationUnreadDecrScript = redis.NewScript(`
-local v = redis.call('GET', KEYS[1])
-if v and tonumber(v) > 0 then
-  return redis.call('DECRBY', KEYS[1], 1)
-end
-return 0
-`)
-
 // NotificationUnreadIncr 用户未读消息数 +1，返回最新值
 func NotificationUnreadIncr(ctx context.Context, userID int64) (int64, error) {
 	ctx, span := global.Tracer.Start(ctx, "redisdao.NotificationUnreadIncr")
@@ -45,20 +36,6 @@ func NotificationUnreadIncr(ctx context.Context, userID int64) (int64, error) {
 	return val, nil
 }
 
-// NotificationUnreadDecr 用户未读消息数 -1，返回扣减后的值（不低于 0）
-func NotificationUnreadDecr(ctx context.Context, userID int64) (int64, error) {
-	ctx, span := global.Tracer.Start(ctx, "redisdao.NotificationUnreadDecr")
-	defer span.End()
-
-	key := fmt.Sprintf(redismodel.KeyNotificationUnread, userID)
-	val, err := notificationUnreadDecrScript.Run(ctx, global.RedisEngine, []string{key}).Int64()
-	if err != nil {
-		span.RecordError(err)
-		return 0, err
-	}
-	return val, nil
-}
-
 // NotificationUnreadGet 获取用户未读消息数，不存在时返回 0
 func NotificationUnreadGet(ctx context.Context, userID int64) (int64, error) {
 	ctx, span := global.Tracer.Start(ctx, "redisdao.NotificationUnreadGet")

internal/redisdao/virtualpay.go

@@ -0,0 +1,67 @@
+package redisdao
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/global"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/redismodel"
+)
+
+// VirtualPayUnpaidSet 标记某虚拟支付订单「最近一次查单确认未支付」，TTL 内不再重复查询。
+func VirtualPayUnpaidSet(ctx context.Context, orderNo string, ttl time.Duration) error {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.VirtualPayUnpaidSet")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyVirtualPayUnpaid, orderNo)
+	if err := global.RedisEngine.Set(ctx, key, 1, ttl).Err(); err != nil {
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+// VirtualPayUnpaidDel 清除负缓存（订单已支付/已处理后调用，让后续流程不再跳过它）。
+func VirtualPayUnpaidDel(ctx context.Context, orderNo string) error {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.VirtualPayUnpaidDel")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyVirtualPayUnpaid, orderNo)
+	if err := global.RedisEngine.Del(ctx, key).Err(); err != nil {
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+// VirtualPayUnpaidBatchGet 批量判断哪些订单命中负缓存。
+// 用一次 MGET 代替 N 次 GET，避免逐单往返 Redis 放大单轮耗时。
+func VirtualPayUnpaidBatchGet(ctx context.Context, orderNos []string) (map[string]bool, error) {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.VirtualPayUnpaidBatchGet")
+	defer span.End()
+
+	result := make(map[string]bool, len(orderNos))
+	if len(orderNos) == 0 {
+		return result, nil
+	}
+
+	keys := make([]string, 0, len(orderNos))
+	for _, no := range orderNos {
+		keys = append(keys, fmt.Sprintf(redismodel.KeyVirtualPayUnpaid, no))
+	}
+	vals, err := global.RedisEngine.MGet(ctx, keys...).Result()
+	if err != nil {
+		span.RecordError(err)
+		return nil, err
+	}
+	for i, v := range vals {
+		if i >= len(orderNos) {
+			break
+		}
+		if v != nil {
+			result[orderNos[i]] = true
+		}
+	}
+	return result, nil
+}