Distributed Systems

What this skill is about

Topics we drill

• CAP & PACELC Theorems
• Consistency Models
• Consensus Algorithms
• Replication
• Sharding & Partitioning
• Leader Election
• Distributed Transactions
• Time & Ordering
• Fault Tolerance & Failure Detection
• Idempotency & Exactly-Once Delivery
• Quorums
• Distributed Storage
• Message Queues & Event Streaming
• Distributed Coordination Services
• Distributed Observability & Resilience Testing
• Distributed Computing & Batch Processing

Why this matters at interviews

Real interviewers don’t just check if you know the syntax — they probe whether you’ve used the concept under production pressure. Our drills mirror that. Adaptive difficulty, named anti-patterns called out as you go, and a senior-staff voice that teaches the production vocabulary rather than dumbing it down.

Companies that test this