public static void configureCustom(SentinelFeignClientProperties properties,
			AbstractCircuitBreakerFactory factory) {
		properties.getRules().forEach((resourceName, degradeRules) -> {
			if (!Objects.equals(properties.getDefaultRule(), resourceName)) {
				factory.configure(builder -> ((SentinelConfigBuilder) builder)
						.rules(properties.getRules().getOrDefault(resourceName,
								new ArrayList<>())),
						resourceName);
			}
		});
	}
properties backup, prevent rules from being updated every time the container is
refreshed.
spring-cloud-alibaba-starters/spring-cloud-circuitbreaker-sentinel/src/main/java/com/alibaba/cloud/circuitbreaker/sentinel/feign/CircuitBreakerRuleChangeListener.java