feat: 支持通过环境变量配置搜索接口限流参数

common/constants.go

@@ -177,6 +177,7 @@ var (
 	DownloadRateLimitDuration int64 = 60
 
 	// Per-user search rate limit (applies after authentication, keyed by user ID)
+	SearchRateLimitEnable         = true
 	SearchRateLimitNum            = 10
 	SearchRateLimitDuration int64 = 60
 )

common/init.go

@@ -120,6 +120,10 @@ func InitEnv() {
 	CriticalRateLimitEnable = GetEnvOrDefaultBool("CRITICAL_RATE_LIMIT_ENABLE", true)
 	CriticalRateLimitNum = GetEnvOrDefault("CRITICAL_RATE_LIMIT", 20)
 	CriticalRateLimitDuration = int64(GetEnvOrDefault("CRITICAL_RATE_LIMIT_DURATION", 20*60))
+
+	SearchRateLimitEnable = GetEnvOrDefaultBool("SEARCH_RATE_LIMIT_ENABLE", true)
+	SearchRateLimitNum = GetEnvOrDefault("SEARCH_RATE_LIMIT", 10)
+	SearchRateLimitDuration = int64(GetEnvOrDefault("SEARCH_RATE_LIMIT_DURATION", 60))
 	initConstantEnv()
 }
 

middleware/rate-limit.go

@@ -196,7 +196,10 @@ func userRedisRateLimiter(c *gin.Context, maxRequestNum int, duration int64, key
 }
 
 // SearchRateLimit returns a per-user rate limiter for search endpoints.
-// 10 requests per 60 seconds per user (by user ID, not IP).
+// Configurable via SEARCH_RATE_LIMIT_ENABLE / SEARCH_RATE_LIMIT / SEARCH_RATE_LIMIT_DURATION.
 func SearchRateLimit() func(c *gin.Context) {
+	if !common.SearchRateLimitEnable {
+		return defNext
+	}
 	return userRateLimitFactory(common.SearchRateLimitNum, common.SearchRateLimitDuration, "SR")
 }