Horizontal vs Vertical Scaling Simulator
Interactive game to learn scaling strategies for web applications. Experiment with horizontal and vertical scaling, see the effects on performance, cost, and reliability with realistic pricing simulation and budget constraints.
Category: Infrastructure
Topics covered: scaling, infrastructure, educational, interactive, cloud, auto-scaling
// simulator
Horizontal vs Vertical Scaling Simulator
Interactive game to learn scaling strategies for web applications. Experiment with horizontal and vertical scaling, see the effects on performance, cost, and reliability with realistic pricing simulation and budget constraints.
Learn scaling strategies by managing traffic under real-world conditions
Upgrade individual server specs. Note: Upgrades require ~30s downtime.
Pricing Reference (Monthly)
Traffic Pattern (Last 60s)
Understanding Scaling Strategies
What you'll learn
- Horizontal scaling (scale out) vs vertical scaling (scale up)
- When to use each scaling strategy based on workload
- Impact on performance, cost, and reliability
- Auto-scaling configuration and benefits
- Load distribution with horizontal scaling
- Budget management and cost optimization
Scaling strategies
- Vertical Scaling: Increase server resources (CPU, RAM, disk). Simple but limited.
- Horizontal Scaling: Add more servers with load balancer. Unlimited but complex.
- Auto-Scaling: Automatically adjust capacity based on demand.
- Hybrid Approach: Combine both strategies for optimal results.
Real-world applications
- AWS EC2: Use Auto Scaling Groups with ELB for horizontal scaling.
- Kubernetes: Horizontal Pod Autoscaler (HPA) for container workloads.
- Databases: Read replicas (horizontal) vs larger instances (vertical).
- Serverless: Automatic scaling without managing servers.
Best practices
- Start with vertical scaling for simplicity, then scale horizontally.
- Use auto-scaling to handle traffic spikes cost-effectively.
- Set appropriate cooldown periods to avoid scaling thrashing.
- Monitor key metrics: CPU, memory, response time, error rate.
- Design stateless applications for easier horizontal scaling.
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