Expiry time @cacheable spring boot

Question

I have implemented a cache and now I want to add an expiry time.

How can I set an expiry time in spring boot with @Cacheable?

This is a code snippet:

@Cacheable(value="forecast",unless="#result == null") 

Answer 1

I use life hacking like this

    @Configuration     @EnableCaching     @EnableScheduling     public class CachingConfig {         public static final String GAMES = "GAMES";         @Bean         public CacheManager cacheManager() {             ConcurrentMapCacheManager cacheManager = new ConcurrentMapCacheManager(GAMES);              return cacheManager;         }          @CacheEvict(allEntries = true, value = {GAMES})         @Scheduled(fixedDelay = 10 * 60 * 1000 ,  initialDelay = 500)         public void reportCacheEvict() {             System.out.println("Flush Cache " + dateFormat.format(new Date()));         }     } 

Answer 2

Note that this answer uses ehcache, which is one of supported Spring Boot cache managers, and arguably one of the most popular.

First you need to add to pom.xml:

<!-- Spring Framework Caching Support --> <dependency>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-cache</artifactId> </dependency> <dependency>     <groupId>net.sf.ehcache</groupId>     <artifactId>ehcache</artifactId> </dependency> 

In src/main/resources/ehcache.xml:

<?xml version="1.0" encoding="UTF-8"?> <ehcache>     <defaultCache eternal="true" maxElementsInMemory="100" overflowToDisk="false" />     <cache name="forecast"             maxElementsInMemory="1000"             timeToIdleSeconds="120"            timeToLiveSeconds="120"            overflowToDisk="false"            memoryStoreEvictionPolicy="LRU" /> </ehcache>