I am using spring boot with Redis.Redis is running as Docker container
spring.cache.type=redis
spring.redis.host=localhost
spring.redis.port=6379
Redis is a memory DB, if it finds data in Redis based on the key, it retrieved from Redis otherwise go into actual db call.
when Redis is running, code works fine. but sometimes for any reason, if Redis is down, I am getting exception RedisConnectionException: Unable to connect to localhost:6379
I want to make it optional. if it gets down, code should work as it is, by calling actual DB data(sql service repositories).
is there any way to make Redis call as optional.
if running, work with Redis,
if down, can to actual DB without exception.
my code
@Cacheable(cacheNames = CACHE_USER_DETAILS)
public User getUserDetails(String username) {
//call data from sql serever via repositories.
}
2
Answers
I fixed the problem by creating own error handler and overried the spring cache error handler
Since you are using @Cachaeble spring abstraction for caching, Write a class which implements CacheErrorHandler interface.You can override it’s methods and do your logic side(For example log the error).
If the redis is down, getUserDetails(String username ) will be done automatically.
Check out this question
Hope this helps.