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Beyond Microservices: Streams, State and Scalability – Gwen Shapira
Explore the limitations of microservices and discover alternative approaches to building scalable, fault-tolerant systems, including event-driven architecture, shared streams, and local state, to achieve independence and evolution.
- REST APIs are well understood, but not scalable or fault-tolerant, leading to a “distributed monolith” problem.
- Microservices should be independent and able to evolve independently, but services often become tightly coupled due to shared state and APIs.
- Event-driven architecture addresses this problem by decoupling services and allowing them to react to events in their own way.
- API gateways can help simplify traffic management and security, but can also create a bottleneck and increase complexity.
- Serverless architecture can be powerful, but can also introduce new challenges and overhead.
- Distributed event-driven systems can help maintain scaling and fault-tolerance, as well as simplify debugging and maintenance.
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Important concepts include:
- Shared streams of events
- Local state and caching
- Independent microservices
- API gateways and gateways
- Event-driven architecture
- Microservices in extreme (function-as-a-service)