feat: 流行度相关rabbitMQ

backend/internal/video/popularity_cache.go

@@ -0,0 +1,29 @@
+package video
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+	"time"
+
+	rediscache "feedsystem_video_go/internal/middleware/redis"
+)
+
+// 更新视频流行度缓存
+func UpdatePopularityCache(ctx context.Context, cache *rediscache.Client, id uint, change int64) {
+	if cache == nil || id == 0 || change == 0 {
+		return
+	}
+
+	_ = cache.Del(context.Background(), fmt.Sprintf("video:detail:id=%d", id))
+
+	now := time.Now().UTC().Truncate(time.Minute)
+	windowKey := "hot:video:1m:" + now.Format("200601021504")
+	member := strconv.FormatUint(uint64(id), 10)
+
+	opCtx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
+	defer cancel()
+
+	_ = cache.ZincrBy(opCtx, windowKey, member, float64(change))
+	_ = cache.Expire(opCtx, windowKey, 2*time.Hour)
+}