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System Design Interview

System Design Interview

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Interview framework and the gaps found
Back-of-envelope estimation
Asking better questions and senior-level signals
Still to practice
?Quiz · 10 questions

Mock design: notification system
Mock design: chat system
Microservices
Protocols, real-time options and pagination
How GraphQL works inside
?Quiz · 10 questions

Choosing a database
NoSQL families and the product map
Caching
Bloom filter
Sharding, replication and consistent hashing
?Quiz · 10 questions

Message queues and Kafka
Batch vs stream processing
Ordering, acks and delivery guarantees
Transactions across services: 2PC, sagas, outbox, last-seat booking
CAP, PACELC and consistency models
Consensus, leader election and distributed locks
?Quiz · 10 questions

Load balancing and API gateways
Rate limiting, backpressure and load shedding
Observability: logs, metrics, traces, alerts and SLOs
Disaster recovery and multi-region
?Quiz · 10 questions

Authentication, sessions and JWT
OAuth 2.0, OpenID Connect and API keys
Authorization models and where auth lives
End-to-end encryption and key management
?Quiz · 10 questions

Handbook›System design›6. Lock it down

Quiz: Lock it down

10 questions · optional · think of your answer before you reveal it

Question 1 of 10 · Lock it down

AuthN vs AuthZ?

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