Alibaba Cloud Server Load Balancer is a service that distributes traffic among multiple ECS instances. It can extend the service capability of an application system by distributing traffic and eliminating any single point of failure (SPOF).
- Have two types of SLB for both private and public network
- Also supported on classic networks or VPCs
- Provide multiple management method
3 core concepts:
- Represent the SLB instance
- Listener represents custom load balancing policies and forwarding rules
- Backend Server represents a group of backend ECS instances
Major Capabilities:
- Sets a virtual IP address to virtualize multiple ECS
- Check the health status of ECS instances
- Defense against DDoS attack & improve overall defense capacity
