Skip to main content

Explore Problems

Pricing Discuss

System Design Interview Mastery

Course Contents

Anatomy of the System Design Interview

Requirements & NFRs That Matter

The Delivery Framework

The Design Template

Communicating While Designing

Whiteboard & Diagram Craft

The Questions Everyone Asks (FAQ)

Full Mock Walkthrough

Checkpoint: The Method

Pattern: Scaling Reads

Pattern: Scaling Writes

Pattern: Dealing with Contention

Pattern: Real-time Updates

Pattern: Long-Running Tasks

Pattern: Handling Large Blobs

Pattern: Multi-Step Processes

Pattern: Fan-out — Feeds & Timelines

Pattern: Top-K & Counting at Scale

Pattern: Proximity & Geo

Pattern: Dedup & Uniqueness

Pattern: Search-Shaped Problems

Checkpoint: Problem Patterns

Redis, Inside-Out

PostgreSQL, Inside-Out

Cassandra, Inside-Out

DynamoDB, Inside-Out

Elasticsearch, Inside-Out

MongoDB, Inside-Out

Checkpoint: Technology Deep-Dives: Data

Kafka, Inside-Out

Flink, Inside-Out

ZooKeeper & etcd, Inside-Out

S3 & Object Storage, Inside-Out

Gateways: nginx & Envoy

Landmark Systems & Papers Map

Checkpoint: Technology Deep-Dives: Infra

SQL vs NoSQL, Decided

Postgres vs DynamoDB vs Cassandra

Kafka vs RabbitMQ vs SQS

Redis vs Memcached

REST vs gRPC vs GraphQL

Latency vs Accuracy

The Cloud-Service Map

Checkpoint: The Decision Layer

How You're Actually Graded

The L4 / L5 / L6 Rubric

The Marketplace @L4

The Marketplace @L5

The Marketplace @L6

The Level Jumps on a Second Problem

Failure Modes by Level

Checkpoint: Level Calibration

Capstone Pass 5: The Full Interview Run

Pattern: Top-K & Counting at Scale

Pattern: Top-K & Counting at Scale | CodePeet