Practice System Design
Like a Real Interview
The first simulator that grades your architecture in real-time. Master scalability, availability, and database sharding with interactive feedback.
Supported Technologies
Practice with industry-standard tools. Drag and drop components onto the canvas and simulate real-world traffic patterns.
Frontend Services
Simulate client-side rendering bottlenecks and CDN caching strategies for single-page applications.
Caching & Redis
Implement distributed caching layers. Handle cache stampedes and eviction policies in real-time.
Event Streaming
Design resilient event-driven architectures using Kafka topics, partitions, and consumer groups.
Sharded Databases
Master horizontal scaling. Configure shard keys and handle resharding without downtime.
Security Groups
Configure VPCs, subnets, and firewalls. secure your architecture against common attack vectors.
Real-time Metrics
Visual feedback on latency, throughput, and error rates as you modify your system design.