redis宕机如何保证业务正常

redis宕机可通过实现Redis缓存切面来保证业务正常，示例代码：

package com.raymon.hcp.security.aspect;
import com.raymon.hcp.security.annotation.CacheException;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
/**
* Redis缓存切面，防止Redis宕机影响正常业务逻辑
* Created by zhanglei on 2020/3/17.
*/
@Aspect
@Component
@Order(2)
public class RedisCacheAspect {
private static Logger LOGGER = LoggerFactory.getLogger(RedisCacheAspect.class);
@Pointcut("execution(public * com.raymon.hcp.portal.service.*CacheService.*(..)) || execution(public * com.raymon.hcp.service.*CacheService.*(..))")
public void cacheAspect() {
}
@Around("cacheAspect()")
public Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {
Signature signature = joinPoint.getSignature();
MethodSignature methodSignature = (MethodSignature) signature;
Method method = methodSignature.getMethod();
Object result = null;
try {
result = joinPoint.proceed();
} catch (Throwable throwable) {
//有CacheException注解的方法需要抛出异常
if (method.isAnnotationPresent(CacheException.class)) {
throw throwable;
} else {
LOGGER.error(throwable.getMessage());
}
}
return result;
}
}