Event-driven architectures decouple components and improve the scalability and resiliency of applications under load.

Core Concepts of Event-Driven Design

Events represent state changes that trigger actions asynchronously.

Decoupled producers and consumers enable flexibility.

Benefits for System Resilience

Systems can gracefully handle spikes and partial failures with event buffering.

Loose coupling improves maintainability and upgrade paths.

Event Brokers and Messaging

Platforms like Kafka, RabbitMQ, and AWS SNS/SQS facilitate reliable event routing.

Choosing the right message broker depends on throughput and durability needs.

Design Patterns and Anti-Patterns

Event sourcing and CQRS are common patterns to organize data flow.

Avoid tight coupling and ensure idempotency in event processing.