Reactive programming is a programming paradigm that promotes an asynchronous, non-blocking, event-driven approach to data processing. Reactive programming involves modeling data and events as observable data streams and implementing data processing routines to react to the changes in those streams. In the reactive style of programming, we make a request for the resource and start performing other things. When the data is available, we get Continue Reading
As the name of the blog suggests, we will be taking the first steps to build a simple application from scratch using Couchbase as a database and spring -boot as a framework. Let’s get started. You can create a starter maven project using this link. Add Web, Lombok and Couchbase dependencies. The pom.xml should look like: Let’s run the spring boot application: How to download Continue Reading
Automated Rest services testing using REST Assured library. Introductory guide for REST Assured library. basic understanding of its use and requirement.
Consider a situation where a microservice is deployed on multiple pods and on condition one pod got restarted with any of the failure reason makes unreachable and at the same time interdependent services are registers its IP for communication. Now, since other pods of the service are alive but not able to communicate makes the communication failure as well as making the failure of every Continue Reading
In the past few posts, we have talked about the forces and tools of Digital transformation and why enterprises should be concerned about it. In this post, let us look at a very recent survey done by Mulesoft which talks about the top IT pain points of 2019 Disconnected Systems – In a lot of enterprises, there is a plethora of legacy systems which have Continue Reading
In this blog, I will talk about using Couchbase with Lagom’s Persistent Entity API. And then we will see how we can query for fetching the data. We already know that Lagom handles data persistence with ‘Persistent Entity’ which holds the state of individual entities. And to interact with them one must know the identifier of the entity. So Lagom provides the support to build Continue Reading
In my previous blog, we discussed how to monitor a Kafka stream application using Grafana and Graphite. In this solution, we used jmx2graphite as a metrics exporter which takes the metrics from the Jolokia URL where Jolokia exposes the JMX metrics and pushes those metrics to Graphite. But, there is a problem with this solution that we need to deploy one jmx2graphite per service. So Continue Reading
In this blog, we will learn about JWT, its basic structure, advantages and how can we generate and validate JWT in java. So, Authentication is the process of verifying the identity of a user, and JWT is a safe way for transferring information between multiple parties in the JSON format. So for example, If you want to login to any application say XYZ that allows Continue Reading
A few days back, we got the requirement that we need to monitor a Kafka stream application using JMX metrics. We looked for the solution and reached to the conclusion which we will discuss in this blog. I will try to explain each and every component of the solution along with the setup and the integration part of the whole system. Proposed solution: Service (application) exposes Continue Reading
Microservices have become a crucial part of any enterprise these days, no matter if it is a big or a small enterprise. When something this big is present in the market why not see some fundamentals of the same? So here we’ll go through the concepts like what is a microservice and Saga Patterns that an ideal microservice should have.
The Case for Message-driven Reactive Systems.
A few days back I completed the certification for the 1st course of the Lightbend Reactive Architecture Advanced i.e. Building Scalable Systems. I found this course very helpful and informative to get the idea of Reactive architecture. So if you have not started yet, please go there and lets become reactive. There are few foundational courses as well to build the foundation of reactive architecture. Continue Reading
In a Knolx session organized by Knoldus, we discussed the idea of following Saga Patterns. For that to be more accessible, I’d like to share the session with the help of this blog. Service-oriented architecture has given us enough advantages to be a predominant architecture in our Industry, but it can’t be all sunshine and rainbows. There are use cases where monoliths are not only Continue Reading
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