10 18, 2017
Microservices systems are extremely intricate, with many moving parts that need to work alongside each other in complete unison to ensure a well-functioning and resilient system. For this reason it is important that the right methods and tools are implemented to support an efficient system.
This is essential in any system but even more so in a Microservices-architected system due to its many connected moving parts. If one service fails in a Microservices system, the whole system can be affected.
Mechanisms to support fast failure:
Failing fast is achieved through the use of ‘time outs’. Hanging systems can be frustrating for end users, as they are unsure if a task has been completed yet or if it is still in limbo. Timeouts should occur when something does not respond within a certain time and the system responds by returning a timeout error, rather than waiting endlessly for a response.
Monitoring & logging tools:
Due to the complex nature of Microservices it is key that the system is highly observable. Monitoring tools are focused around collecting measures (numbers & counts) while logging tools are detailed logs of all system events. Both of these tools are key in providing information to assist in problem solving and troubleshooting any issues in the system. These tools combined with the use of transaction and correlation ID’s, enable transactions to be tracked as they travel though the system and complete their intended tasks. This way when trouble shooting, you can see exactly where the error occurred and which part of the transaction was affected.
Continuous deployment tools:
Another suite of important automated tools to consider using within your Microservices system are continuous deployment tools. These tools essentially automate your software deployment which is useful when you have a complex Microservices system with multiple instances across many servers. This means a new deployment can happen faster and more efficiently which essentially ensures a more steadily available system for its end users.
Continuous integration tools:
The complexities of a Microservices system, in particular its distributed nature means automated testing and feedback tools are crucial for validating system changes. These tools are referred to as continuous integration tools. They automatically test any changes as soon as it is checked in through the running of automated unit and integration tests.
To learn more about the tools and methods needed for a Microservices system, download our e-book – Understanding Microservices.
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