System Design

Vertical vs Horizontal Scaling

System DesignScalingArchitecture

Learn the difference between scaling up (vertical) and scaling out (horizontal) with interactive visualizations.

Scaling Strategies

Explore how each scaling method works in practice

CPU

RAM

Standard Instance

4vCPUs

8GB RAM

$40/mo

Feature	Vertical Scaling (Scale Up)	Horizontal Scaling (Scale Out)
Complexity	Low - No code changes usually needed.	High - Requires load balancer, stateless app.
Cost	Exponential - Big servers are very expensive.	Linear - Add cheap commodity hardware.
Downtime	Required - Reboot needed to upgrade limits.	None - Add servers without stopping.
Limit	Hardware Ceiling (Max RAM/CPU slot).	Theoretically Infinite.
Best For	Databases (SQL), Monoliths, MVPs.	Web Apps, Microservices, NoSQL.

Title	Type	Link
MongoDB: Horizontal vs Vertical	web	Open
System Design Primer: Scalability	github	Open
AlgoMaster: Vertical vs Horizontal Scaling	article	Open

ObydulSenior Software Engineer

Init guide environment...