apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/config/BizConfig.java/BizConfig/accessKeyCacheRebuildInterval
class BizConfig:  public int accessKeyCacheRebuildInterval() {
    int interval = getIntProperty("apollo.access-key-cache-rebuild.interval",
        DEFAULT_ACCESS_KEY_CACHE_REBUILD_INTERVAL);
    return checkInt(interval, 1, Integer.MAX_VALUE, DEFAULT_ACCESS_KEY_CACHE_REBUILD_INTERVAL);
  }