Event-Driven Architecture (EDA)

Systems coordinate state changes through state-change notifications and events rather than synchronous request/reply HTTP/RPC calls.

STAFF ENGINEER TAKEAWAY: Services react to what happened in the past ("OrderPlaced") rather than commanding actions ("ChargeCard").

🔒

Unlock Event-Driven Architecture (EDA) & All 150+ Visual Architecture Deep Dives

This advanced distributed system deep-dive includes interactive packet visualizers, state machine transitions, and FAANG interview trade-off blueprints.

More Topics in 5. Messaging & Events

📬Message Queues (PTP Asynchronous Buffering)

Point-to-point asynchronous buffers where producer services enqueue jobs, and competing consumer workers process tasks at their own decoupled pace.

📢Publish/Subscribe Event Streaming

Publishers broadcast events to topics without knowing who the subscribers are. Multiple independent consumer groups read from the same topic simultaneously.

📐Domain-Driven Design (DDD) & Bounded Contexts

Divides large software domains into discrete logical boundaries where ubiquitous language and domain models are strictly defined and isolated.

✂️Command Query Responsibility Segregation (CQRS)

Separates read models from write models. Commands mutate state using normalized relational databases; queries read from denormalized read-optimized views.