Tag Archives: Microservices

In the microservices world, to fulfill a client request one microservice may need to talk to other microservices. We should minimize this kind of direct dependencies on other microservices but in some cases it is unavoidable. If a microservice is down or not functioning properly then the issue may cascade up to the upstream services. Netflix created Hystrix library implementing ...

In the microservices world, Service Registry and Discovery plays an important role because we most likely run multiple instances of services and we need a mechanism to call other services without hardcoding their hostnames or port numbers. In addition to that, in Cloud environments service instances may come up and go down anytime. So we need some automatic service registration ...

In MicroServices using Spring Boot & Spring Cloud – Part 1 : Overview, we took a brief look at what are micro-services and how we can use SpringBoot and SpringCloud to build micro-services. In this post, we are going to learn: What is the need for Spring Cloud Config and Vault? Create our first micro-service: catalog-service Create Spring Cloud Config ...

Nowadays MicroServices is the hot buzzword in software development and many organizations prefer building their enterprise applications using MicroServices architecture. In Java community, SpringBoot is the most widely used framework for building both monoliths and microservices. I am planning to write a series of articles covering how to build microservices using SpringBoot and SpringCloud. In this article we are going ...

While microservice architecture might not be a silver bullet for all systems, it definitely has its advantages, especially when building a complex system with a lot of different components. Of course, if you’re considering microservices, you have to give serious thought to how the different services will communicate. In this post, we’ll look at how to set up an Apache ...

Microservices allow us to go faster and reduce our time to value. However, we cannot just naively move fast and break things. We need a way to reduce the risk of making changes and in doing so, make it safer to bring new changes to production. A powerful pattern that helps lower risk of bringing changes into production is to ...

Back in 2015 I wrote a couple of articles about how you can piggyback a standard Java EE Transaction Manager to get data consistency across distributed services (here is the original article and here is an article about doing it with Spring Boot, Tomcat or Jetty). Last year I was fortunate enough to work on a small project where we ...

We’ve been talking about Istio and service mesh recently (follow along @christianposta for the latest) but one aspect of Istio can be glossed over. One of the most important aspects of Istio.io is its ability to control the routing of traffic between services. With this fine-grained control of application-level traffic, we can do interesting resilience things like routing around failures, ...

When we build services architectures (Service Oriented Architecture, Microservices, the next incarnation, etc), we end up making a lot more calls over the network. The network is perilous. We try to build redundancy into our services so that we can experience failures in our system and still move forward and process customer requests. An important part of this puzzle of ...