- API Routing Hostname
Explains the hostname routing pattern, which isolates API services by giving each one its own hostname, with typical use cases and trade-offs.
- API Routing HTTP
Explains the HTTP header routing pattern, where a request header selects the target service, action, version, or feature, along with its pros and cons.
- API Routing Path
Explains the path routing pattern, which groups APIs under one hostname and separates services by URI, with NGINX, API Gateway, and CloudFront implementations on AWS.
- Circuit Breaker
Describes the Circuit Breaker pattern, which stops a caller from repeatedly calling a failing or slow service, its three states, and how to build it on AWS.
- Event Sourcing
Describes the Event Sourcing pattern, which stores every state-changing event in an immutable event store and rebuilds state by replay, with challenges and AWS implementations.
- Hexagonal Architecture
Describes the Hexagonal Architecture (Ports and Adapters) pattern for loosely coupled, independently testable applications, including how to apply it on AWS Lambda.
- Retry With Backoff
Describes the Retry with Backoff pattern, which automatically retries operations that failed from transient errors using exponential backoff and jitter, with AWS implementations.
- Saga Choreography
Describes the Saga Choreography pattern, which keeps data consistent across services through event subscriptions instead of a central coordinator, with an AWS order-flow example.
- Saga Orchestration
Describes the Saga Orchestration pattern, which uses a central orchestrator such as AWS Step Functions to coordinate distributed transactions and compensating actions.
- Strangler Fig
Describes the Strangler Fig pattern for incrementally migrating a monolith to microservices behind a proxy layer, with AWS implementations, benefits, and challenges.
- Transactional Outbox
Describes the Transactional Outbox pattern, which solves the dual-write problem by saving events in the same transaction as the data, using an outbox table or change data capture.