This topic provides an overview of listeners. After you create an SLB instance, you must configure one or more listeners for it. A listener checks for connection requests and then distributes the requests to backend servers based on the forwarding rules that are defined by a specified scheduling algorithm.
SLB provides listeners for Layer-4 (TCP and UDP) and Layer-7 (HTTP and HTTPS) load balancing. The following table lists the features and use cases of these listeners.
For more information, see Add a TCP listener.
Services that focus on real-time content delivery other than reliability, such as video chats and real-time quotes
For more information, see Add a UDP listener.
Applications that need to identify data content, such as web applications and small-sized mobile games
For more information, see Add an HTTP listener.
Applications that require encrypted transmission
For more information, see Add an HTTPS listener.