docs: function execute(name, execb) {
      var pool = pools[name];
      if (!pool) {
          execb(null);
          console.error('获取redis连接[ %s ]未找到连接池对象!', name);
          return;
      }
      if (pool.proxy) {
          execb(pool.client, function () {
          });
      } else {
          // 连接池中获取对象
          pool.client.acquire(function (err, client) {
              var release = function () {
                  pool.client.release(client);
              };
              if (err) {
                  console.error('执行Redis命令时报错: %s', err.stack);
                  release();
              } else {
                  if (pool.auth_pass) {
                      client.auth(pool.auth_pass, function () {
                          execb(client, release);
                      });
                  } else {
                      execb(client, release);
                  }
              }
          }, 0);
      }
  }