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Tag Archives: Microservices

Event Driven Microservices Patterns

In this blog we will discuss some patterns which are often used in microservices applications which need to scale: Event Stream Event Sourcing Polyglot Persistence Memory Image Command Query Responsibility Separation The Motivation Uber, Gilt and others have moved from a monolithic to a microservices architecture because they needed to scale.  A monolithic application puts all of its functionality into a ...

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Microservice using Docker stack deploy – WildFly, Java EE and Couchbase

There is plenty of material on microservices, just google it! I gave a presentation on refactoring monolith to microservices at Devoxx Belgium a couple of years back and it has good reviews: This blog will show how Docker simplifies creation and shutting down of a microservice. All code used in this blog is at github.com/arun-gupta/couchbase-javaee. Microservice Definition using Compose Docker 1.13 introduced a v3 of Docker ...

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Processing billions of events/day

Throughout the lifecycle of a company the IT architecture is bound to change multiple times. There can be many different reasons for such changes. One of the worst reasons for such change can be when developers get bored by a particular solution and just wish to follow whatever the newest hype happens to be. Some of the reasons why the ...

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Microservices Deployments Evolution

Microservices Are Here, to Stay A few years back, most software systems had a monolithic architecture and slow release cycle. In the recent years, there is a clear move towards Microservices architecture which is optimized for scalability, elasticity, failure, and speed of change. This trend has been further enforced by the adoption of cloud and containers, which also enabled practices ...

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Real-time Smart City Traffic Monitoring Using Microservices-based Streaming Architecture (Part 2)

Modern Open Source Complex Event Processing For IoT This series of blog posts details my findings as I bring to production a fully modern take on Complex Event Processing, or CEP for short. In many applications, ranging from financials to retail and IoT applications, there is tremendous value in automating tasks that require to take action in real time. Putting ...

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Develop A Microservice with Forge, WildFly Swarm and Arquillian

In this post we are going to see how to develop a microservice using WildFly Swarm and Forge and testing it with Arquillian and Rest Assured. WildFly Swarm offers an innovative approach to packaging and running Java EE applications by packaging them with just enough of the server runtime to “java -jar” your application. JBoss Forge is a software development ...

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Better Complex Event Processing at Scale Using a Microservices-based Streaming Architecture (Part 1)

java-interview-questions-answers

A microservice-based streaming architecture combined with an open source rule engine makes real-time business rules easy This post is intended as a detailed account of a project I have made to integrate an OSS business rules engine with a modern stream messaging system in the Kafka style. The goal of the project, better known as Complex Event Processing (CEP), is ...

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Microservice using AWS Serverless Application Model and Couchbase

Amazon Web Services introduced Serverless Application Model, or SAM, a couple of months ago. It defines simplified syntax for expressing serverless resources. SAM extends AWS CloudFormation to add support for API Gateway, AWS Lambda and Amazon DynamoDB. This blog will show how to create a simple microservice using SAM. Of course, we’ll use Couchbase instead of DynamoDB! This blog will also use the ...

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Microservice using AWS API Gateway, AWS Lambda and Couchbase

This blog has explained the following concepts for serverless applications so far: Serverless FaaS with AWS Lambda and Java AWS IoT Button, Lambda and Couchbase The third blog in serverless series will explain how to create a simple microservice using Amazon API Gateway, AWS Lambda and Couchbase. Read previous blogs for more context on AWS Lambda. Amazon API Gateway is a fully managed service ...

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Microservices are Commodity

I’m a big fan of Simon Wardley. I’m not able to follow everything he writes about, but even the old writings are very interesting and somehow it all makes sense in retrospective. If you haven’t read anything from him, this video is an excellent start (or go back a few years to the longer talk). In this article I’ll try ...

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