System Design Candidate

System Design & Scalability Mock Test

Master system design interviews. Cover horizontal scaling, load balancers, database sharding, and message queues.

Free forever · No credit card · Your data never sold · Instant AI feedback

Try 1 Free Question →

2 minutes · 1 question · no credit card

See How You Get Scored

Example score card — your live score updates as you answer.

Technical Depth

Clarity

Confidence

Most students reach interview-ready after 3 practice sessions.

Sample question

Explain the difference between horizontal and vertical scaling.

Vertical scaling adds CPU/RAM/storage to one machine (limited, single point of failure); horizontal scaling adds nodes behind a load balancer for near-unlimited scale.

Placement Readiness Syllabus

Horizontal vs Vertical scaling architectures
Load Balancers routing methods (Nginx, HAProxy)
Database partitioning, sharding, and replication parameters
Asynchronous systems via Message Queues (RabbitMQ, Kafka)

How DevMate Practice Works

1. Answer 1 question free — no signup needed
2. Get your readiness score with instant feedback
3. Practice full rounds + run your resume through the ATS resume check

Frequently Asked Questions

Are microservice integration patterns tested?

Yes, API Gateways, Service Discovery, and Circuit Breakers are evaluated.

Practice privately — see where you stand

Answer one real interview question and get instant AI feedback. This is practice, not judgment — only you see your score.

Try 1 Free Question →

2 minutes · 1 question · no credit card

Free forever · No credit card · Your data never sold · Instant AI feedback

Already practicing? Start the full AI interview →

Prepare for related roles

Prepare forAccenture System Design interview questions Prepare forAdobe System Design interview questions Prepare forAirbnb System Design interview questions Prepare forAirtel System Design interview questions Prepare forAmazon System Design interview questions Prepare forAmd System Design interview questions