---
title: 'Key Use Cases for Load Balancers'
description: 'Explore key use cases for load balancers in modern architectures.'
image: 'https://assets.bytebytego.com/diagrams/0046-top-6-load-balancer-use-cases.png'
createdAt: '2024-02-04'
draft: false
categories:
  - api-web-development
tags:
  - Load Balancing
  - Scalability
---

![](https://assets.bytebytego.com/diagrams/0046-top-6-load-balancer-use-cases.png)

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.