Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/appg/shortrecommend.go

@@ -0,0 +1,43 @@
+package appg
+
+import "time"
+
+const (
+	defaultShortRecommendRequestTimeout = 3 * time.Second
+	defaultShortRecommendKeyTTLHours    = 72
+)
+
+// ShortRecommendConfig 控制App侧短视频环形队列读取行为。
+// Enabled 使用指针是为了兼容旧配置：未配置时默认启用。
+type ShortRecommendConfig struct {
+	Enabled          *bool `json:"enabled"`
+	RequestTimeoutMs int   `json:"requestTimeoutMs"`
+	MaxBatches       int   `json:"maxBatches"`
+	ScanMultiplier   int   `json:"scanMultiplier"`
+	KeyTTLHours      int   `json:"keyTTLHours"`
+}
+
+func (c *GlobalConfig) ShortRecommendEnabled() bool {
+	return c == nil || c.ShortRecommend.Enabled == nil || *c.ShortRecommend.Enabled
+}
+
+func (c *GlobalConfig) ShortRecommendRequestTimeout() time.Duration {
+	if c == nil || c.ShortRecommend.RequestTimeoutMs <= 0 {
+		return defaultShortRecommendRequestTimeout
+	}
+	timeout := time.Duration(c.ShortRecommend.RequestTimeoutMs) * time.Millisecond
+	if timeout < 100*time.Millisecond {
+		return 100 * time.Millisecond
+	}
+	if timeout > 10*time.Second {
+		return 10 * time.Second
+	}
+	return timeout
+}
+
+func (c *GlobalConfig) ShortRecommendKeyTTL() int {
+	if c == nil || c.ShortRecommend.KeyTTLHours <= 0 {
+		return defaultShortRecommendKeyTTLHours
+	}
+	return c.ShortRecommend.KeyTTLHours
+}