When many users access a website or application at the same time, one server may not be able to handle all requests. A load balancer helps solve this problem. This article explains what a load balancer is and why it is needed.
What is a Load Balancer?
A load balancer is a system that distributes incoming user requests across multiple servers instead of sending all requests to a single server.
This helps prevent overload and improves performance.
Why Is a Load Balancer Needed?
If too many users access one server, it can slow down or crash. A load balancer ensures that traffic is shared evenly among servers.
- Prevents server overload
- Improves website speed
- Ensures high availability
How Does a Load Balancer Work?
When a user sends a request, the load balancer receives it first. It then decides which server should handle the request.
If one server is busy, the request is sent to another available server.
Load Balancer in Cloud Computing
In cloud computing, load balancers work automatically with multiple cloud servers. They adjust traffic distribution based on server health and load.
Benefits of Using a Load Balancer
- Better performance during high traffic
- Reduced downtime
- Automatic traffic management
- Improved user experience
Simple Real-Life Example
Think of a supermarket with many billing counters. Customers are directed to different counters to avoid long queues. The load balancer works the same way for servers.
Who Needs a Load Balancer?
- High-traffic websites
- Online applications
- Government portals
- E-commerce platforms
Final Conclusion
A load balancer is essential for handling multiple users smoothly. It keeps cloud applications fast, stable, and always available.
Understanding load balancers helps beginners learn how cloud systems manage heavy traffic.