Layer 2 — Communication

Series: Modern System Design

Layer 2 is how those pieces talk. REST, queues, streams, and callbacks are different answers to the same question: how does work move between machines?

Posts

1. REST APIs

2. gRPC

3. Synchronous vs Asynchronous Communication

4. Message Queues

5. Kafka

6. Pub/Sub

7. Event-Driven Architecture

8. WebSockets

9. Server-Sent Events

10. Webhooks

11. Delivery Guarantees

12. Poison Messages

13. Head-of-Line Blocking

14. Backends for Frontends

← Previous layer: Layer 1 — The building blocks → Next layer: Layer 3 — Reliability

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