Server Load Balancing

Server Load Balancing (SLB) is a network service that distributes traffic to multiple servers. SLB can quickly increase the throughput of the application system through traffic distribution, hide the actual service port to enhance the security of the internal system, and improve the reliability of the application system by eliminating single point of failure of the service.


High Performance

Distributed clusters meet the performance requirements for large-scale traffic distribution.

High Stability

Use redundant design to prevent single point of failure; SLB enables back-end servers to easily extend service capability.

Low Cost

With SLB instances, you can quickly deploy application at low cost. Instances and address assignment are free for internal SLB.


Provides free DDoS attack defense function and dynamic startup without any delay.


Basic Forwarding

Support public and private network services; provide Layer 4 (TCP) and Layer 7 (HTTP/HTTPS) network services.

EIP Binding/Unbinding

Support binding and unbinding of elastic IP addresses to improve flexibility and service availability.

Health Check

Schedule health check on back-end servers based on configuration pairs for distributed clusters to automatically isolate abnormal servers.

Session Retention

Session retention is available for both TCP and HTTP protocols to allocate a single server to process requests from the same client.

HTTPS Support

The HTTPS protocol provides centralized certificate management to meet the diversified demands of reliable, fast and secure data transmission.


SLB Application Scenarios

Common scenario

SLB Application Scenarios

SLB, working with EIP, mainly distributes the access traffic from the Internet to different KEC instances.