No, you do not need to install a Redis client on your Elastic Compute Service (ECS) instance to connect to a Tair instance. You only need a compatible Redis client to connect to the Tair instance directly from your ECS instance. For more information, see Connect to a Tair instance.
You can also use Alibaba Cloud Data Management (DMS) to log on to a Tair database in a fast and secure manner without the need to install a client. This allows you to manage Tair databases in a visualized manner.