Overview
At least one listener must be added to a load balancer. A 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 a protocol that meets your needs in a specific scenario.
Protocol |
Description |
Application Scenario |
|
---|---|---|---|
Layer 4 |
TCP |
|
|
Layer 4 |
UDP |
|
Scenarios that focus more on timeliness than on reliability, such as video chats, games, and real-time financial quotations |
Layer 7 |
HTTP |
|
Applications where data content needs to be identified, such as web applications and mobile games |
Layer 7 |
HTTPS |
|
Applications that require encrypted transmission |
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