What is Horizontal Scaling?
Adding more servers to handle increased load
Why It Matters
Horizontal scaling can handle almost unlimited growth by adding more machines
Real-World Example
Adding 10 more web servers when traffic increases during a sale
Related Terms
Learn More at buildDay Melbourne
Want to understand these concepts hands-on? Join our one-day workshop and build a real web application from scratch.
Related Terms
Load Balancer
A system that distributes incoming traffic across multiple servers to prevent any one from being overwhelmed
Scalability
Your application's ability to handle growth in users, data, or traffic
Vertical Scaling
Upgrading a server to be more powerful with more CPU, memory, or storage
Server
A computer that runs continuously to handle requests, store data, and serve your application to users
Serverless
A way to run code without managing your own servers, where the cloud provider handles everything
Edge Functions
Code that runs on servers close to your users around the world, rather than in one central location