Sticky Sessions & Session Persistence
Configure Nginx to ensure a client's requests are always routed to the same backend server for session continuity.
What are Sticky Sessions?
Imagine you're shopping online and add items to your cart. If the website uses multiple servers, how does it remember your cart as you browse?
This is where sticky sessions come in! They ensure your requests consistently go to the same backend server.
The Load Balancing Challenge
Without sticky sessions, a load balancer might send each new request from your browser to a different server.
- Server A gets your login.
- Server B gets your "add to cart" request.
- Server C gets your "checkout" request.
Each server might not know about your session on the others, leading to a broken user experience.
All lessons in this course
- Load Balancing Algorithms
- Health Checks & Server Monitoring
- Sticky Sessions & Session Persistence
- Weighted Load Balancing & Backup Servers