apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/AccessKeyServiceWithCache.java/AccessKeyServiceWithCache/handleDeletedAccessKeys
class AccessKeyServiceWithCache:  private void handleDeletedAccessKeys(Set<Long> deletedIds) {
    if (CollectionUtils.isEmpty(deletedIds)) {
      return;
    }
    for (Long deletedId : deletedIds) {
      AccessKey deleted = accessKeyIdCache.remove(deletedId);
      if (deleted == null) {
        continue;
      }

      accessKeyCache.remove(deleted.getAppId(), deleted);
      logger.info("Found AccessKey deleted, {}", deleted);
    }
  }