Spring Cache with Redis - How to gracefully handle or even skip Caching in case of Connection Failure to Redis

Question

I've enabled Caching in my Spring app and I use Redis to serve the purpose. However, whenever a connection failure occurs, the app stops working whereas I think it had better skip the Caching and go on with normal execution flow.

So, does anyone have any idea on how to gracefully do it in Spring ?

Here is the exception I got.

Caused by: org.springframework.data.redis.RedisConnectionFailureException: Cannot get Jedis connection; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

Answer 1

As from Spring Framework 4.1, there is a CacheErrorHandler that you can implement to handle such exceptions. Refer to the javadoc for more details.

You can register it by having your @Configuration class extends CachingConfigurerSupport (see errorHandler()).

Answer 2

CacheErrorHandler suggested by Stephane Nicoll is useful. But it doesn't help when it fails to create the connection to redis.

The cache method like @Cacheable stills fails with RedisConnectionFailureException.