Overview¶
You need to add at least one listener after you have created a load balancer. This listener receives requests from clients and routes requests to backend servers using the protocol, port, and load balancing algorithm you select.
Supported Protocols¶
ELB provides load balancing at both Layer 4 and Layer 7.
Select TCP or UDP for load balancing at Layer 4 and HTTP or HTTPS at Layer 7.
Protocol | Description | Application Scenario | |
---|---|---|---|
Layer 4 | TCP |
|
|
Layer 4 | UDP |
| Scenarios that require quick response, such as video chat, gaming, and real-time financial quotations |
Layer 7 | HTTP |
| Web applications where data content needs to be identified, such as mobile games |
Layer 7 | HTTPS |
| Web applications that require encrypted transmission |