https://e4developer.com/posts/ Recent content in Posts on e4developer https://e4developer.com/images/headshot.png https://e4developer.com/images/headshot.png Hugo en-us Fri, 03 Apr 2026 12:00:00 +0000 https://e4developer.com/posts/e4developer-is-back/ Fri, 03 Apr 2026 12:00:00 +0000 https://e4developer.com/posts/e4developer-is-back/ After a long break, e4developer is back. New role at Meta, new side projects, and a fresh start for the blog. https://e4developer.com/posts/e4developer-facebook-chess-and-life-in-2020/ Sun, 03 May 2020 00:00:00 +0000 https://e4developer.com/posts/e4developer-facebook-chess-and-life-in-2020/ It has been a while since I last time wrote a post here, hence I wanted to update you on what is happening with the website (why the lack of activity) and what’… https://e4developer.com/posts/journey-to-devops-talk-at-the-devops-roundabout/ Thu, 03 Oct 2019 00:00:00 +0000 https://e4developer.com/posts/journey-to-devops-talk-at-the-devops-roundabout/ On the 24th of September 2019, I had an opportunity to speak at the very first DevOps Roundabout meetup in London. You can watch my talk on YouTube. https://e4developer.com/posts/aws-iam-looking-at-some-of-the-more-advanced-features/ Sun, 28 Jul 2019 00:00:00 +0000 https://e4developer.com/posts/aws-iam-looking-at-some-of-the-more-advanced-features/ AWS Identity and Access Management (IAM) is one of the most important services available in AWS. Most people know that you can create user accounts and assign… https://e4developer.com/posts/aws-solution-architect-pro-good-habits-and-blogging/ Sun, 21 Jul 2019 00:00:00 +0000 https://e4developer.com/posts/aws-solution-architect-pro-good-habits-and-blogging/ I have been posting a little bit less recently. In some ways, it is easier to write two blog posts a week than one blog post once in a while. https://e4developer.com/posts/code-sharing-in-microservices-architecture-youtube-course/ Fri, 21 Jun 2019 00:00:00 +0000 https://e4developer.com/posts/code-sharing-in-microservices-architecture-youtube-course/ I am very excited to share with you my mini video course on “Code Sharing in Microservices Architecture”. The course consist of 5 videos: This is the first time… https://e4developer.com/posts/you-should-learn-multiple-programming-languages/ Sun, 16 Jun 2019 00:00:00 +0000 https://e4developer.com/posts/you-should-learn-multiple-programming-languages/ The first language I used to write a small program was Pascal. Since then I have worked professionally with Java, JavaScript, Groovy and a few more. Currently… https://e4developer.com/posts/microservices-why-do-you-need-a-service-mesh/ Wed, 15 May 2019 00:00:00 +0000 https://e4developer.com/posts/microservices-why-do-you-need-a-service-mesh/ Working for consultancy, I already had a chance to build microservice based systems in large financial organisations as well as public sector ones. https://e4developer.com/posts/quick-guide-to-all-the-ops/ Thu, 02 May 2019 00:00:00 +0000 https://e4developer.com/posts/quick-guide-to-all-the-ops/ You probably heard about Ops, DevOps, maybe even about GitOps! This short article is a “jargon buster” explaining what all these different terms mean and which… https://e4developer.com/posts/which-java-jdk-should-i-use-which-provide-free-lts/ Sat, 30 Mar 2019 00:00:00 +0000 https://e4developer.com/posts/which-java-jdk-should-i-use-which-provide-free-lts/ With Oracle stopping free updates for Java 8 and effectively only maintaining free updates with the latest Java release (12 at the time of writing) a natural… https://e4developer.com/posts/the-journey-to-devops-my-first-white-paper/ Tue, 26 Mar 2019 00:00:00 +0000 https://e4developer.com/posts/the-journey-to-devops-my-first-white-paper/ I am quite excited to share with you “The Journey to DevOps” (announcement and the download link here), the first white paper that I have published with my… https://e4developer.com/posts/java-9-to-12-all-the-language-modifications/ Tue, 26 Mar 2019 00:00:00 +0000 https://e4developer.com/posts/java-9-to-12-all-the-language-modifications/ We have all had quite a lot of time to get familiar with Java 8 and all the amazing features that it provided us with. Since then quite a lot have happened… https://e4developer.com/posts/just-in-time-knowledge-and-the-value-of-knowing-a-little/ Wed, 20 Feb 2019 00:00:00 +0000 https://e4developer.com/posts/just-in-time-knowledge-and-the-value-of-knowing-a-little/ To be a good software developer you need to know some things very well. You can’t get away without actually knowing your programming language of choice… https://e4developer.com/posts/what-makes-a-good-software-developer-cv/ Sat, 26 Jan 2019 00:00:00 +0000 https://e4developer.com/posts/what-makes-a-good-software-developer-cv/ Writing CV is a bit of a game. You are trying to create a short piece of writing, focused on yourself, that will get you to the interview. Ideally… https://e4developer.com/posts/deliberate-practice-for-software-developers/ Mon, 14 Jan 2019 00:00:00 +0000 https://e4developer.com/posts/deliberate-practice-for-software-developers/ You might have heard of the 10,000-hour rule. It supposedly takes 10,000 hours of practice to become a master at something. This number will, of course… https://e4developer.com/posts/alexa-say-a-happy-new-year/ Fri, 04 Jan 2019 00:00:00 +0000 https://e4developer.com/posts/alexa-say-a-happy-new-year/ Happy New Year to all my readers! I hope you missed these blog posts at least a little bit. I had a good rest during the festive period and feel ready to start writing and hacking again. In this article, I want to tell you about my most recent fascination- programming for Alexa (Echo) enabled devices. https://e4developer.com/posts/i-wrote-100-blog-posts-in-2018-how-it-went-and-whats-next/ Sat, 15 Dec 2018 00:00:00 +0000 https://e4developer.com/posts/i-wrote-100-blog-posts-in-2018-how-it-went-and-whats-next/ I wanted to write 2 blog posts a week in 2018, which would result in at least 100 blog posts in a year… This is the number 100! I could not be happier! In this centenary blog post, I look back at the journey that took me here. I will also share with you some of the ideas for this blog in 2019. https://e4developer.com/posts/software-architecture-in-the-world-of-microservices/ Sun, 02 Dec 2018 00:00:00 +0000 https://e4developer.com/posts/software-architecture-in-the-world-of-microservices/ The topic of software architecture comes up often when discussing microservices. Many newcomers to microservices are not sure how to handle discussing… https://e4developer.com/posts/having-just-the-right-amount-of-technical-debt/ Wed, 21 Nov 2018 00:00:00 +0000 https://e4developer.com/posts/having-just-the-right-amount-of-technical-debt/ Today I want to talk to you about technical debt. This is a topic that comes up a lot and often generates some emotions. Developers often want to have a minimal… https://e4developer.com/posts/making-your-machine-learning-idea-real-with-aws/ Sun, 11 Nov 2018 00:00:00 +0000 https://e4developer.com/posts/making-your-machine-learning-idea-real-with-aws/ Machine Learning and its applications are getting more popular every day. For many developers, building a machine learning powered application seems like a… https://e4developer.com/posts/reddit-api-authentication-with-java-spring/ Sun, 04 Nov 2018 00:00:00 +0000 https://e4developer.com/posts/reddit-api-authentication-with-java-spring/ I am a big fan of Reddit. The platform is great for learning and sharing programming knowledge… In fact, it contains so much knowledge and opinion… https://e4developer.com/posts/java-surprises-unexpected-behaviours-and-features/ Sun, 28 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/java-surprises-unexpected-behaviours-and-features/ Java is a very mature programming language – in fact, it is over 21 years old, so if it was a person it could drink even in the USA! With age comes wisdom… https://e4developer.com/posts/leading-developers-vs-managing-them/ Sun, 21 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/leading-developers-vs-managing-them/ Words like leadership and management are used often when discussing software projects. While they may sound similar, they are quite different and are often (but… https://e4developer.com/posts/how-to-learn-aws/ Sat, 20 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-learn-aws/ Amazon Web Services (AWS) is the most popular Cloud solution out there. More and more companies are using it every day. It makes development easier, safer… https://e4developer.com/posts/my-favourite-design-pattern-strategy/ Sun, 14 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/my-favourite-design-pattern-strategy/ Among many OOP design patterns described, the one that influenced my development the most is the Strategy Pattern. In this article, I will briefly explain what… https://e4developer.com/posts/should-you-let-your-developers-work-from-home/ Sun, 14 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/should-you-let-your-developers-work-from-home/ It seems that everyone wants to work remotely these days. Why wouldn’t they? There are some obvious benefits, such as reduced commute and working from the… https://e4developer.com/posts/single-responsibility-principle-do-you-know-the-real-one/ Thu, 04 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/single-responsibility-principle-do-you-know-the-real-one/ Single Responsibility Principle, as defined in the very famous set of SOLID principles, is often misunderstood. When asked what it means… https://e4developer.com/posts/algorithms-to-live-by-my-favourite-developer-audiobook/ Wed, 03 Oct 2018 00:00:00 +0000 https://e4developer.com/posts/algorithms-to-live-by-my-favourite-developer-audiobook/ Today I want to share with you a review of the most exciting book I have listened to so far -“Algorithms to Live By: The Computer Science of Human Decisions” by… https://e4developer.com/posts/the-physics-of-the-agile-methodology/ Sat, 29 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/the-physics-of-the-agile-methodology/ There are numerous articles out there talking about agile teams and how being agile will change your life/project. I agree with what Agile Manifesto proposes… https://e4developer.com/posts/should-you-use-spring-boot-in-your-project/ Mon, 24 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/should-you-use-spring-boot-in-your-project/ Spring Boot is enjoying, a seemingly never-ending growth of popularity. While only released in 2014, it has managed to overtake the Java serverside in less than… https://e4developer.com/posts/implementing-minimax-algorithm-in-java/ Sun, 23 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/implementing-minimax-algorithm-in-java/ If you want to write a program that is able to play a strategy game, there are good chances that you will be looking at a Minimax algorithm. https://e4developer.com/posts/please-stop-writing-so-many-for-loops-in-java/ Sat, 15 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/please-stop-writing-so-many-for-loops-in-java/ In this blog post, I want to take you back to basics and talk about Java for loops. To be honest, I am writing this blog post partially for myself… https://e4developer.com/posts/audiobooks-a-secret-weapon-of-a-busy-software-developer/ Fri, 14 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/audiobooks-a-secret-weapon-of-a-busy-software-developer/ I have blogged about my road to productivity recently. I received a comment there from one of my readers asking me if I have a secret weapon that helped me be… https://e4developer.com/posts/microservices-and-cross-cutting-concerns/ Sun, 09 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-and-cross-cutting-concerns/ When thinking about microservices, we mostly imagine autonomous teams working on independent services. Despite all that independence, things such as log… https://e4developer.com/posts/simulating-the-secretary-problem-with-java/ Sun, 09 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/simulating-the-secretary-problem-with-java/ You might have noticed that I like reading books. I have recently read “Algorithms to Live By: The Computer Science of Human Decisions” which absolutely… https://e4developer.com/posts/my-road-to-productivity-start-finishing-and-producing/ Sun, 02 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/my-road-to-productivity-start-finishing-and-producing/ Being productive and motivated- who wouldn’t want that? I used to think that some people are just born more motivated, that some people simply are this way. https://e4developer.com/posts/tips-for-whiteboard-and-paper-coding-interviews/ Sun, 02 Sep 2018 00:00:00 +0000 https://e4developer.com/posts/tips-for-whiteboard-and-paper-coding-interviews/ In my career as a software developer, I have interviewed over 100 people. Most of these interviews were face to face interview involving coding on paper or a… https://e4developer.com/posts/java-vs-groovy-for-microservices/ Sun, 26 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/java-vs-groovy-for-microservices/ In the past three years, I was involved in developing microservices architectures. In Java, with Spring Boot and in Groovy with Grails. https://e4developer.com/posts/how-to-be-a-good-scrum-master-start-with-this-book/ Fri, 24 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-be-a-good-scrum-master-start-with-this-book/ “Scrum Mastery: From Good To Great Servant-Leadership” – a book that I picked up recently based on it being the number one selling book about Agile… https://e4developer.com/posts/designing-an-object-oriented-chess-engine-in-java/ Thu, 16 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/designing-an-object-oriented-chess-engine-in-java/ I love playing chess. I also love programming. How to marry the two? How about playing chess against a chess engine (chess playing program) that I have designed… https://e4developer.com/posts/learning-java-spring-microservices-with-pluralsight/ Sun, 12 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/learning-java-spring-microservices-with-pluralsight/ You might have seen recently some Pluralsight promotion on my page. There are two reasons for this. Reason number one- I became a Pluralsight Affiliate and I… https://e4developer.com/posts/my-favourite-software-development-quotes/ Fri, 10 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/my-favourite-software-development-quotes/ “All problems in computer science can be solved by another level of indirection” – David Wheeler. In this article, I look at my favourite quotes relating to… https://e4developer.com/posts/spring-boot-best-practices/ Mon, 06 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/spring-boot-best-practices/ Spring Boot is the most popular Java framework for developing microservices. In this article, I will share with you the best practices for working with Spring… https://e4developer.com/posts/reddit-the-java-goldmine/ Sun, 05 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/reddit-the-java-goldmine/ Have you heard of Reddit? It is an amazing place on the Internet, where people share links and ideas. It has also a very active programming community. https://e4developer.com/posts/using-redis-in-microservices-architecture/ Fri, 03 Aug 2018 00:00:00 +0000 https://e4developer.com/posts/using-redis-in-microservices-architecture/ In this article, we will look closer at a fascinating open source project. Meet Redis! You may be familiar with Redis already, in that case… https://e4developer.com/posts/my-family-chess-collection/ Sun, 29 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/my-family-chess-collection/ You may know that playing chess is my passion. The name of this website- E4developer comes from the chess move I start my games with – e4. https://e4developer.com/posts/when-to-use-a-java-framework-like-spring/ Sun, 29 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/when-to-use-a-java-framework-like-spring/ I have recently been writing a lot about microframeworks and my enthusiasm for them. Even though I think they are amazing, they are not always the answer. https://e4developer.com/posts/e4developer-newsletter-july-2018-number-5/ Sat, 21 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-newsletter-july-2018-number-5/ Thank you for reading my newsletter. I have some exciting news to share with you! I have started E4developer YouTube Channel! You can visit and subscribe now. https://e4developer.com/posts/the-key-to-a-successful-software-architecture/ Sat, 21 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/the-key-to-a-successful-software-architecture/ Recently I have read and reviewed “Clean Architecture” by Robert C. Martin. Very entertaining book. It made me think about the main quality that good software… https://e4developer.com/posts/e4developer-youtube-channel-is-here/ Tue, 17 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-youtube-channel-is-here/ Half a year after creating this blog I felt that there was something missing… I enjoy sharing my passion for the JVM ecosystem and software development with You… https://e4developer.com/posts/awesome-microservices-discover-technologies-and-theory/ Sun, 15 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/awesome-microservices-discover-technologies-and-theory/ Wouldn’t it be nice if someone would gather all the best resources, projects, technologies and everything else related to microservices? Yes, it would! https://e4developer.com/posts/discovering-clean-architecture-with-uncle-bob/ Sat, 14 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/discovering-clean-architecture-with-uncle-bob/ Recently I have been taking a bit of a step back from microservices and trying to look at systems architecture from a more general perspective. https://e4developer.com/posts/the-quest-for-simplicity-in-java-microservices/ Sun, 08 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/the-quest-for-simplicity-in-java-microservices/ There is great value in simplicity. When things are simple, they are easier to understand, easier to extend and easier to modify. They are better. https://e4developer.com/posts/microservices-definition/ Mon, 02 Jul 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-definition/ Are you really building microservices? What are microservices? There seems to be a constant disagreement on what constitutes microservices systems and what… https://e4developer.com/posts/technical-architects-the-role-the-job-and-the-value/ Sat, 30 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/technical-architects-the-role-the-job-and-the-value/ Technical Architect is a job that many people understand differently. Some people argue Technical Architects should only design systems, staying hands-off… https://e4developer.com/posts/e4developer-is-growing-start-here-and-more-to-come/ Tue, 26 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-is-growing-start-here-and-more-to-come/ It is hard to believe (mostly for myself) that I have already written 60 articles on this blog. With hundreds of people reading this blog daily, I would like to… https://e4developer.com/posts/cracking-the-coding-interview-learn-that-and-much-more/ Sun, 24 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/cracking-the-coding-interview-learn-that-and-much-more/ Three years ago I was looking for a new job. I decided that I will pick up a couple of books to help me revised for the interviews. One of those books was… https://e4developer.com/posts/cia-world-factbook-api-with-functional-spring/ Fri, 22 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/cia-world-factbook-api-with-functional-spring/ I have recently been very interested in microframeworks. One thing notably missing from that article is Spring in the context of a microframework. https://e4developer.com/posts/computer-science-degree-the-missing-pieces/ Mon, 18 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/computer-science-degree-the-missing-pieces/ I have started studying Computer Science at University more than 10 years ago. Now, with Bachelor’s and Master’s degrees and a few years in the industry… https://e4developer.com/posts/should-i-learn-java-in-2018/ Sat, 09 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/should-i-learn-java-in-2018/ Should I learn Java? This is a question that just keeps coming up. If you are just starting out as a developer, if you already work as a Front End Developer or… https://e4developer.com/posts/e4developer-newsletter-june-2018-number-4/ Tue, 05 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-newsletter-june-2018-number-4/ Thank you for reading my newsletter. In the last month, I wrote on Java, Microservices and creating amazing teams- as expected! I also wrote my first funny post… https://e4developer.com/posts/secrets-to-highly-motivated-and-happy-software-teams/ Mon, 04 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/secrets-to-highly-motivated-and-happy-software-teams/ Who wouldn’t want to work as a part of a happy and motivated software team? Wouldn’t it be great if every team you ever worked with was like that? https://e4developer.com/posts/the-rise-of-java-microframeworks/ Sat, 02 Jun 2018 00:00:00 +0000 https://e4developer.com/posts/the-rise-of-java-microframeworks/ Together with the growing popularity of microservices and light-weight REST API, we are witnessing another trend in Java: the rise of Java Microframeworks. https://e4developer.com/posts/webflux-in-practice-asynchronous-service-with-webclient/ Thu, 31 May 2018 00:00:00 +0000 https://e4developer.com/posts/webflux-in-practice-asynchronous-service-with-webclient/ Building reactive microservices with WebFlux is fun and easy. In this article, I will show you how to build a reactive “synonyms” service. https://e4developer.com/posts/adopting-microservices-pragmatic-advice/ Fri, 25 May 2018 00:00:00 +0000 https://e4developer.com/posts/adopting-microservices-pragmatic-advice/ Your company wants to adopt microservices. You are either really happy or terrified. A change like this can be great for those wanting to learn and improve… https://e4developer.com/posts/getting-started-with-kafka-in-spring-boot/ Mon, 21 May 2018 00:00:00 +0000 https://e4developer.com/posts/getting-started-with-kafka-in-spring-boot/ Kafka seems to only be gaining in popularity. A few years ago you could mostly see it in Big Data engineering context. These days, Kafka is starting to power… https://e4developer.com/posts/how-to-easily-run-kafka-with-docker-for-development/ Sun, 20 May 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-easily-run-kafka-with-docker-for-development/ Kafka is becoming a popular addition to microservice oriented architectures. Despite its popularity, it may be tricky to run it on your development machine… https://e4developer.com/posts/the-state-of-spring-in-2018-devoxx-uk-impressions/ Sun, 20 May 2018 00:00:00 +0000 https://e4developer.com/posts/the-state-of-spring-in-2018-devoxx-uk-impressions/ Thanks to my company – Scott Logic – I recently had a pleasure of attending the Devoxx UK 2018 conference. Among many interesting talks and speakers… https://e4developer.com/posts/how-to-write-horrible-java/ Sun, 13 May 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-write-horrible-java/ I feel horrible today. I am sick- my throat hurts, my head is not working as it should. Hence, I decided I will tell you how to write horrible Java code. https://e4developer.com/posts/effective-java-microservices-require-effective-java/ Wed, 09 May 2018 00:00:00 +0000 https://e4developer.com/posts/effective-java-microservices-require-effective-java/ Writing good software requires using the right tools. Choosing the right frameworks, libraries and designing smart systems. With all that to learn and worry… https://e4developer.com/posts/e4developer-newsletter-may-2018-number-3/ Mon, 07 May 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-newsletter-may-2018-number-3/ In the last month, I spent a lot of time writing about Reactive Spring Boot. I believe that Reactive Microservices are only going to grow in popularity… https://e4developer.com/posts/spring-data-microservices-data-companion/ Sat, 05 May 2018 00:00:00 +0000 https://e4developer.com/posts/spring-data-microservices-data-companion/ Spring Data is one of the flagship projects of the Spring ecosystem. If you need to work with data- be it SQL, non-SQL, using map-reduce or other… https://e4developer.com/posts/quick-setup-for-spring-cloud-data-flow-with-docker-compose/ Wed, 02 May 2018 00:00:00 +0000 https://e4developer.com/posts/quick-setup-for-spring-cloud-data-flow-with-docker-compose/ Spring Cloud Data Flow requires quite a few dependencies in order to run it. In this blog post, I will show you Docker Compose tool and how it can be used to… https://e4developer.com/posts/springs-webflux-reactor-parallelism-and-backpressure/ Sat, 28 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/springs-webflux-reactor-parallelism-and-backpressure/ Spring Boot 2.0 (and Spring 5) introduced WebFlux as a way to build reactive Microservices. WebFlux is built using Reactor, which introduces completely new… https://e4developer.com/posts/java-websockets-made-simple-with-javalin/ Thu, 26 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/java-websockets-made-simple-with-javalin/ WebSockets is a technology that enables establishing an interactive connection between the front-end and the service. Being an advanced web technology… https://e4developer.com/posts/how-to-stay-up-to-date-with-java-and-tech-use-twitter/ Sun, 22 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-stay-up-to-date-with-java-and-tech-use-twitter/ Java, Microservices, other JVM languages… Programming, best practices, architecture… Libraries, frameworks, methodologies… I could go on for a while here. https://e4developer.com/posts/microservices-the-architecture-of-choices/ Wed, 18 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-the-architecture-of-choices/ One thing that differentiates microservices architecture from more traditional, monolithic development styles is the number of choices that have to be made. https://e4developer.com/posts/webflux-and-servicing-client-requests-how-does-it-work/ Sat, 14 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/webflux-and-servicing-client-requests-how-does-it-work/ I have previously written about Getting Reactive with Spring Boot 2.0 and Reactor, where I have given an introduction to reactive programming in Spring Boot. https://e4developer.com/posts/getting-reactive-with-spring-boot-2-0-and-reactor/ Wed, 11 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/getting-reactive-with-spring-boot-2-0-and-reactor/ Reactive programming is gaining a rapid popularity in the JVM community. With Java 9 natively embracing the Reactive Streams and Spring Boot 2.0… https://e4developer.com/posts/e4developer-newsletter-april-2018-number-2/ Sun, 08 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-newsletter-april-2018-number-2/ Thank you for reading my newsletter. I have sent the previous newsletter on the 1st of March and I decided to send these on a monthly basis. Expect the next one… https://e4developer.com/posts/productivity-advice-for-developers-and-development-teams/ Sun, 08 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/productivity-advice-for-developers-and-development-teams/ Getting work done effectively and efficiently is a goal of most software development teams. On a personal level, being able to get a productive day at work can… https://e4developer.com/posts/reactive-streams-in-java-introducing-the-new-spi/ Wed, 04 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/reactive-streams-in-java-introducing-the-new-spi/ One of the new features of Java 9 is the introduction of the Reactive Streams SPI to the JDK. Reactive programming keeps gaining in popularity… https://e4developer.com/posts/the-importance-of-being-humble-as-a-software-developer/ Sun, 01 Apr 2018 00:00:00 +0000 https://e4developer.com/posts/the-importance-of-being-humble-as-a-software-developer/ I have recently been thinking about the importance of humility for software developers. I feel that the more I learn about building software the humbler I… https://e4developer.com/posts/introduction-to-concurrency-in-spring-boot/ Fri, 30 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/introduction-to-concurrency-in-spring-boot/ When building services with Spring Boot we have to deal with concurrency. There is this misconception that because of using Servlets and getting a new Thread… https://e4developer.com/posts/the-phoenix-project-a-key-to-understanding-devops/ Sat, 24 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/the-phoenix-project-a-key-to-understanding-devops/ Every now and then you read a book that completely changes how you understand something. “The Phoenix Project” (Amazon) changed how I understand DevOps and… https://e4developer.com/posts/lightweight-kotlin-microservices-with-javalin/ Thu, 22 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/lightweight-kotlin-microservices-with-javalin/ Introducing Javalin- a micro-framework for building Simple REST APIs for Java / Kotlin. Learn how to write Javalin “Hello World”, what are the “before, after and request” handlers and other core Javalin concepts. Building executable jar with required dependencies explained. https://e4developer.com/posts/keeping-your-coding-skills-sharp-with-hackerrank/ Sat, 17 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/keeping-your-coding-skills-sharp-with-hackerrank/ It is good to stay “in shape” when it comes to algorithmic coding. You never know when it may be important- a difficult problem at work or a short notice interview. Let me introduce you to one of my all-time favourite “tools”. Ladies and Gentlemen- HackerRank! https://e4developer.com/posts/being-a-lead-developer-on-the-road-presentation/ Fri, 16 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/being-a-lead-developer-on-the-road-presentation/ On the 14th of March 2018, I had a pleasure of speaking at the While42 – French Tech Engineers Network event. I want to thank my friend Cesar Tron-Lozai and the… https://e4developer.com/posts/cqrs-a-simple-explanation/ Sun, 11 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/cqrs-a-simple-explanation/ Command Query Responsibility Segregation (CQRS) is a pattern that causes quite a lot of confusion. With the popularity of microservices and the event-based… https://e4developer.com/posts/how-to-learn-spring-cloud-the-practical-way/ Tue, 06 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/how-to-learn-spring-cloud-the-practical-way/ “How do you learn Spring Cloud?” I heard that question posed a few times before in different ways. Here, I will give you my answer on what I think is the best way of learning Spring Cloud. https://e4developer.com/posts/introducing-json-b-with-spring-boot-2-0/ Sun, 04 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/introducing-json-b-with-spring-boot-2-0/ JSON Binding (JSON-B) is the new Java EE standard for converting JSON messages to Java Objects and back. See how it can be used in Spring Boot 2.0 and how does it compare to Jackson and GSON that are already available for some time. https://e4developer.com/posts/e4developer-newsletter-february-2018-number-1/ Thu, 01 Mar 2018 00:00:00 +0000 https://e4developer.com/posts/e4developer-newsletter-february-2018-number-1/ Newsletter focusing on Microservices, JVM, Building Teams and other exciting technical stuff that I write on e4developer. You can join our mailing list and receive it to your inbox. https://e4developer.com/posts/spring-cloud-data-flow-use-cases/ Wed, 28 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/spring-cloud-data-flow-use-cases/ Spring Cloud Data Flow can be used for many things- orchestrating event streams, batch processing, data analytics and more. In this article I look at that and examples of different companies using Spring Cloud Data Flow in production. https://e4developer.com/posts/spring-cloud-data-flow-making-custom-apps-and-shell/ Fri, 23 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/spring-cloud-data-flow-making-custom-apps-and-shell/ Learn how to use Spring Cloud Data Flow Shell and how to create custom Apps. Create a Stream Processor, register it and make it part of a new Stream. https://e4developer.com/posts/building-services-requires-building-teams/ Tue, 20 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/building-services-requires-building-teams/ Microservices are linked to the idea of independent teams. See how vital this idea is to the successful adoption of such highly decoupled architecture. https://e4developer.com/posts/practical-choreography-with-spring-cloud-presentation/ Tue, 20 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/practical-choreography-with-spring-cloud-presentation/ On the 15th February 2018 I had a pleasure to speak at The JVM Roundabout Meetup in London. My topic was “Practical Choreography with Spring Cloud”. https://e4developer.com/posts/getting-started-with-spring-cloud-data-flow/ Sun, 18 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/getting-started-with-spring-cloud-data-flow/ Set up a Spring Cloud Data Flow Server on your local machine. Build an example Stream that takes HTTP traffic, transforms and saves to a file. https://e4developer.com/posts/hateoas-simple-explanation/ Fri, 16 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/hateoas-simple-explanation/ HATEOAS - Hypermedia as the Engine of Application State. Simple explanation what it is, why should you use it and common misconceptions. https://e4developer.com/posts/application-of-grasp-to-microservices/ Tue, 13 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/application-of-grasp-to-microservices/ GRASP stands for General responsibility assignment software patterns. See how this OOP patterns apply to microservices development and design. https://e4developer.com/posts/common-technical-debt-in-microservices/ Sun, 11 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/common-technical-debt-in-microservices/ Common causes of technical debt in Microservices together with practical solutions. See how bad configuration, coupled services and more can affect you. https://e4developer.com/posts/tracing-messages-in-choreography-with-sleuth-and-zipkin/ Fri, 09 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/tracing-messages-in-choreography-with-sleuth-and-zipkin/ Tracing your logs in Choreography with Spring Cloud Sleuth and Zipkin. See how you can map the flow of messages and investigate errors quickly. https://e4developer.com/posts/handling-bad-messages-with-rabbitmq-and-spring-cloud-stream/ Mon, 05 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/handling-bad-messages-with-rabbitmq-and-spring-cloud-stream/ Handling Bad Messages using Dead Letter Queues in RabbitMQ. See how Spring Cloud Stream makes it easy and what can you do to repair and replay messages. https://e4developer.com/posts/the-business-case-for-microservices/ Sat, 03 Feb 2018 00:00:00 +0000 https://e4developer.com/posts/the-business-case-for-microservices/ The business case for microservices. Why companies should be using microservices to save money, get better business outcomes and attract the best people. https://e4developer.com/posts/what-you-need-to-know-about-spring-boot-2-0-rc1/ Wed, 31 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/what-you-need-to-know-about-spring-boot-2-0-rc1/ Spring Boot 2.0 release brings a variety of features. Learn about the changes to the Actuator module, Micrometer introduction, how to migrate and more! https://e4developer.com/posts/setting-up-rabbitmq-with-spring-cloud-stream/ Sun, 28 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/setting-up-rabbitmq-with-spring-cloud-stream/ Setting up RabbitMQ with Spring Cloud Stream step by step. By the end you will see persistent queue together with publisher and consumers subscribed. https://e4developer.com/posts/seven-essential-skills-for-microservices-developers/ Thu, 25 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/seven-essential-skills-for-microservices-developers/ Discussing seven most important skills to become proficient microservices developer. Architecture Knowledge, Domain Modelling, Devops and more… https://e4developer.com/posts/starting-with-microservices-read-building-microservices/ Wed, 24 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/starting-with-microservices-read-building-microservices/ Review of Building Microservices by Sam Newman. Explanation what makes a good introductory book to microservices and why you should read this one. https://e4developer.com/posts/spring-cloud-blueprint-for-successful-microservices/ Mon, 22 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/spring-cloud-blueprint-for-successful-microservices/ Introducing Spring Cloud and its different parts. Learn what you can do with Spring Cloud and why it helps you succeed with microservices architecture. https://e4developer.com/posts/java-enterprise-and-microservices-meet-microprofile/ Sun, 21 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/java-enterprise-and-microservices-meet-microprofile/ Microprofile is the Enterprise Java answer to microservices. This is an introduction to Microprofile with list of current and future features. https://e4developer.com/posts/microservices-toolbox-docker/ Thu, 18 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-toolbox-docker/ Introduction to Docker for microservices developer. How to use it as a development tool and how it is used for deploying microservices architecture. https://e4developer.com/posts/microservices-toolbox-spring-boot/ Tue, 16 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-toolbox-spring-boot/ High level introduction to Spring Boot and its popularity. Spring Boot Hello World example and a list of features that make it so successful. https://e4developer.com/posts/helping-your-team-start-using-pull-request/ Mon, 15 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/helping-your-team-start-using-pull-request/ You should be using pull requests. This blog post contains guidance and advice on helping your team by introducing them to pull requests https://e4developer.com/posts/microservices-five-benefits-from-the-developer-perspective/ Sun, 14 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/microservices-five-benefits-from-the-developer-perspective/ Looking at the main benefits of microservices for developers. Technical flexibility and architecture strengths discussed among other benefits. https://e4developer.com/posts/helping-your-team-draw-together/ Sat, 13 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/helping-your-team-draw-together/ Drawing together is a powerful tool that may improve any software team capability. Practical advice on getting started. Learn how and why! https://e4developer.com/posts/starting-a-blog-why/ Sat, 13 Jan 2018 00:00:00 +0000 https://e4developer.com/posts/starting-a-blog-why/ Post explaining my reasons for starting this blog and what I am planning to write about. Also a few words about my personal life.