添加 API 限流和支付渠道熔断

backend/internal/config/config.go

@@ -17,6 +17,7 @@ type Config struct {
 	SMS           SMSConfig
 	Realname      RealnameConfig
 	Log           LogConfig
+	RateLimit     RateLimitConfig
 }
 
 type StorageConfig struct {
@@ -48,6 +49,11 @@ type LogConfig struct {
 	EnableFile    bool
 }
 
+type RateLimitConfig struct {
+	Enabled           bool
+	RequestsPerMinute int
+}
+
 func Load() Config {
 	return Config{
 		AppEnv:        getEnv("APP_ENV", "development"),
@@ -82,6 +88,10 @@ func Load() Config {
 			EnableConsole: getEnvBool("LOG_ENABLE_CONSOLE", true),
 			EnableFile:    getEnvBool("LOG_ENABLE_FILE", true),
 		},
+		RateLimit: RateLimitConfig{
+			Enabled:           getEnvBool("RATE_LIMIT_ENABLED", true),
+			RequestsPerMinute: getEnvInt("RATE_LIMIT_REQUESTS_PER_MINUTE", 300),
+		},
 	}
 }