Load balancing can be performed for a variety of TCP ports. Typically, load balancers support standard TCP ports such as port 80 for HTTP, port 443 for HTTPS, and other common ports like port 22 for SSH, port 21 for FTP, port 3306 for MySQL, etc.
For example, if you have a web application running on port 80 and want to distribute traffic across multiple servers to improve performance and reliability, a load balancer can be configured to listen on port 80 and forward requests to the backend servers.
In the context of cloud computing, platforms like Tencent Cloud offer load balancing services that support a wide range of TCP ports. For instance, Tencent Cloud's CLB (Cloud Load Balancer) service allows you to configure load balancing for various TCP ports to meet the needs of different applications and services.