What is Session Persistence in load balancing?
Session persistence, also known as session affinity or sticky sessions, is a mechanism used in load balancing to ensure that multiple requests from the same client are consistently routed to the same backend server.
In a typical load-balanced environment, incoming requests from clients are distributed across multiple servers based on various algorithms or factors. However, some applications require that a client’s session state, such as login credentials or shopping cart contents, remain associated with a specific server for the duration of the session.
- Session persistence achieves this by using techniques like cookies, IP addresses, or HTTP headers to identify clients and route their subsequent requests back to the same server that initially served them.
- By maintaining session affinity, session persistence ensures a seamless user experience and prevents issues such as lost session data or frequent re-authentication.
Load Balancer Session Persistence
Load Balancer Session Persistence explores how load balancers manage user sessions in web applications. It explains how these systems evenly distribute incoming traffic across multiple servers to maintain stability and prevent overload. The article will help to understand the concept of session persistence, where load balancers ensure that a user’s requests consistently reach the same server during a session.
Important Topics for Load Balancer Session Persistence
- What is Load Balancing?
- What is Session Persistence in load balancing?
- Types of Session Persistence
- Benefits of Session Persistence
- Challenges of Session Persistence
- Alternatives to Session Persistence
- Use Case Scenarios
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