August 2020
Intermediate to advanced
66 pages
1h 25m
English
Content preview from Responsible Microservices
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Chapter 5. Failure Isolation
In a perfect world, bad things would never happen. Sadly, your applications do not inhabit such a magical realm. To paraphrase a fictional mathematician, failure, uh, finds a way. Should you just surrender to the inevitable chaos and let your customers suffer the ramifications? Of course not! Microservices can be used to isolate a dependency, giving you a natural spot to build in proper failover mechanisms. Performing architectural reviews and leveraging patterns like circuit breaker will help your apps thrive within the mayhem of distributed systems.
No Service Is an Island
Digital products don’t live alone. Every piece of tech you use today interacts with something else. The same is true for the custom software you write. Each bit of code works as a part of a larger whole, it’s just one piece of a system that executes a business process. The name isn’t a coincidence: microservice implies interdependence with other services.
Monoliths have plenty of dependencies, too. It’s common for monoliths to integrate with an aging third-party application that you don’t control. Often you are forced to wire these two systems together with baling twine and duct tape. These engineers weren’t masochistic. They did the integration for good business reasons, most likely to provide more complete information or a better user experience.
These integrations are a fact of life in software development. You should expect to have connections between services that were never ...
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