code: public static Single<Boolean> initCacheService(String url, String password, int dbIndex) {
          return SingleRxXian.call(CACHE_SERVICE, "jedisInit", new HashMap<String, Object>() {{
              put("url", url);
              put("password", password);
              put("dbIndex", dbIndex);
          }}).map(UnitResponse::succeeded);
      }
docs: 初始化 缓存服务
  
  @param url      url
  @param password password
  @param dbIndex  dbIndex
  @deprecated 不建议在redis插件外部初始化redis, for test only