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CompaniesAppleSystem DesignKey Use Cases for Load Balancers
System Design
Mediumapi-web-development

Key Use Cases for Load Balancers

30 minsLoad BalancingScalability
30 mins
1 sections
Load Balancing, Scalability

Overview

The diagram above shows the top 6 use cases where we use a load balancer.

  • Traffic Distribution

Load balancers evenly distribute incoming traffic among multiple servers, preventing any single server from becoming overwhelmed. This helps maintain optimal performance, scalability, and reliability of applications or websites.

  • High Availability

Load balancers enhance system availability by rerouting traffic away from failed or unhealthy servers to healthy ones. This ensures uninterrupted service even if certain servers experience issues.

  • SSL Termination

Load balancers can offload SSL/TLS encryption and decryption tasks from backend servers, reducing their workload and improving overall performance.

  • Session Persistence

For applications that require maintaining a user's session on a specific server, load balancers can ensure that subsequent requests from a user are sent to the same server.

  • Scalability

Load balancers facilitate horizontal scaling by effectively managing increased traffic. Additional servers can be easily added to the pool, and the load balancer will distribute traffic across all servers.

  • Health Monitoring

Load balancers continuously monitor the health and performance of servers, removing failed or unhealthy servers from the pool to maintain optimal performance.

Key Use Cases for Load Balancers [Medium] | Apple System_design | TomoLink