Application of GRASP to Microservices

GRASP stands for General responsibility assignment software patterns. You might have heard of it before, or you might not. Either way, you might not have thought about how these principles can potentially help when deciding your responsibilities assignments in a microservices architecture. Craig Larman in his book Applying UML and Patterns said that the “desert island skill”, the most important skill to have in Object Oriented Analysis/Design would be: “to skillfully assign responsibilities to software objects”. I think there is some truth to this when thinking about the most important microservices skill as well. Lets look at GRASP through the prism of microservices. Continue reading “Application of GRASP to Microservices”

Common Technical Debt in Microservices

Working for a consultancy I have the opportunity to talk to large number of software developers across multiple different projects. That gives me an opportunity to see what works and what common problems different organizations are facing. In this article I will show the most common mistakes in microservices that cause technical debt. I suggest what you could be doing instead. Continue reading “Common Technical Debt in Microservices”

Tracing messages in Choreography with Sleuth and Zipkin

One of the challenges in building distributed system is having a good visibility of what is happening inside them. This challenge is only magnified when dealing with choreography- microservices, loosely coupled, communicating via messaging. In this article you will see how Sleuth and Zipkin help to solve that problem.

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Handling bad messages with RabbitMQ and Spring Cloud Stream

When dealing with messaging in a distributed system, it is crucial to have a good method of handling bad messages. In complicated systems, messages that are either wrong, or general failures when consuming messages are unavoidable. See how you can deal with this problem using Dead Letter Queues, RabbitMQ and Spring Boot Cloud. Continue reading “Handling bad messages with RabbitMQ and Spring Cloud Stream”

The business case for Microservices

Microservices have won major following from technology enthusiasts all over the world. A couple weeks ago I was giving an introduction to Spring Cloud at one of Scott Logic breakfast technical talks (techie brekkies). All the developers in the room were interested and could see number of benefits and challenges with this, still rather new, approach. At the end of the session, during the question time I was asked by one of the business people in the room- “So, what is the business case for this, what business problem does it solve?”. It is easy to provide a few answers about scalability and maintainability of microservices, but I don’t think that speaks clearly to our business people. In this article I will look deeper into the business benefits provided by investing into microservices architecture.

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What you need to know about Spring Boot 2.0 (RC1)

With Spring Boot 2.0 release just around the corner (at the time of writing we have RC1) it is important to see what changes it brings. Even if you are not planning to migrate shortly, it is good to see what is new in this biggest Spring Boot release since the 1.0 version. In this blog post I won’t go through every detail, but cover the most important things. Continue reading “What you need to know about Spring Boot 2.0 (RC1)”

Setting up RabbitMQ with Spring Cloud Stream

Message queues are very important and useful tools that you can utilize for your Microservices oriented architecture. Many developers are hesitant using them with the fear that they may add too much complexity and learning curve to the understanding of their system. I will show you how to make use of RabbitMQ and Spring Cloud Stream to get some basic messaging routes set-up with a very little effort!

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Seven Essential Skills for Microservices Developers

Microservices are gaining popularity and more developers end up working with them. If you are a developer who is going to work with microservices architecture, or an employer who is looking to hire someone- what are the most important skills for microservices developer to posses? Read on to find out.

The magnificent seven skills that will take you far!

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Starting with Microservices: Read “Building Microservices”

A lot of people want to start working with Microservices and don’t quite know where to start. I remember being there- finding that my next project is going to use microservices architecture and I should get familiar with it. Of course, I heard about microservices before and I have read some blog posts, but I felt that my knowledge had major gaps. If you are in this situation- worry no more! Just get yourself a copy of “Building Microservices” by Sam Newman and read it! Continue to find out more why I think this book has you covered.
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Spring Cloud – Blueprint for Successful Microservices

If you are interested in building Microservices in the JVM ecosystem- you have to check out Spring Cloud. Spring Cloud is a project which goal is to make Microservices architecture and patterns simple and practical to use. Spring Boot provides opinionated way of making a Microservice, Spring Cloud gives you an opinionated framework for getting your architecture around them.

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