1. invoke and complete @CacheEvict during @Cacheable
Imagine that the @Cacheable method reads some data at time 1, and the data changed at time 2. The @CacheEvict method evicts the cache, and when time 4 the @Cacheable method completed, it will add the old data to the cache, and the next time @Cacheable method will use the cache that holds the old data.
1.1. solve the problem
Use a high priority aop that stores time 1 and time 3, and at time 4, if time 1 is less than time 3, evict the cache.
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@Around("cacheableMethods(param)")
public Object aroundCache(ProceedingJoinPoint pjp, String param) throws Throwable {
long beginTime = System.nanoTime();
Object retVal = pjp.proceed();
Long evictTime = cache.getIfPresent(param);
if (evictTime != null && evictTime.compareTo(beginTime) > 0) {
// remove Cache
Boolean delete = redisTemplate.delete("note:test::" + param);
log.info("deleted? {}", delete);
}
return retVal;
}
@After("cacheEvictMethods(param)")
public void afterEvict(String param) {
cache.put(param, System.nanoTime());
}
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