RES13-02 Application System Load Balancing
For stateless cluster services, load balancing is used to ensure that traffic is evenly distributed. This prevents services from being affected when some components are idle and some components are overloaded. In addition, system resources can be fully utilized to improve system performance and reliability.
- Risk level
High
- Key strategies
- The granularity of traffic distribution must not be too coarse. Otherwise, some components may be overloaded.
- Traffic is distributed based on the check results of the load status of each backend node.
- If any backend node is faulty, traffic needs to be automatically distributed to other healthy nodes to prevent request failures.
- Related cloud services and tools
- Elastic Load Balance (ELB) supports service load balancing, backend server health inspection, and automatic isolation of abnormal ECS instances.
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