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Enterprise Java

Dynamic casting in Java

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I’m a big fan of Baeldung’s blog. One of his previous post is about casting in Java. Unfortunately, I feel it misses one important point: dynamic casting. Since that’s is (very) relatively new, this post will try to fill that gap. Do not use casting The first thing is that it should be relatively easy to avoid casting. Using polymorphism Polymorphism is a great way ...

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J2Pay – Implementing A Gateway

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Introduction We are very excited to welcome contributors, if you have worked on any gateway you can implement that gateway in our library and support the open source world. You can find our github repository here Before you begin to implement a gateway there are some other classes you should see first. Below are the classes defined briefly. HTTPClient The ...

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Serverless, Java and FN Project, first steps

Serverless isn’t a new thing, but it is fair to say there is still a lot of hype about it and how it will change everything, and how in the future everything will be serverless. Beside serverless/functions provided by cloud providers there are more and more serverless projects coming our way which goal is to break us from vendor lock-in ...

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Apache Camel 2.23 released

Yesterday Apache Camel 2.23 was released which most noteworthy new feature is support for Spring Boot 2.1, where we also improved the starter components to include more metadata and more optimized for the improved Spring Boot auto configuration. This release is mainly a big bug fix release and some other minor new features. One of these features is to allow for ...

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Build a Simple CRUD App with Spring Boot and Vue.js

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“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. In this tutorial, you’re going to build a complete CRUD web application using Vue.js for the client and Spring Boot as the resource server. You’ll also secure ...

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APIGEE – An Introduction to API Gateway

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In this article I want to give brief introduction about APIGEE. Mainly APIGEE offers below functionalities out of the box as api gateway. Protocol Transformation Transform from or to any protocol including SOAP, REST, XML binary, or custom Traffic Management Flexible, distributed quota management, rate limiting, and spike arrest policies out-of-the-box API Security Built-in support for address filtering, JSON and ...

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Exploring the Spline Data Tracker and Visualization tool for Apache Spark (Part 1)

One interesting and promising Open Source project that caught my attention lately is Spline, a data lineage tracking and visualization tool for Apache Spark, maintained at  Absa. This project consists of 2 parts: a Scala library that works on the drivers which, by analyzing the Spark execution plans, captures the data lineages and a web application which provides a UI to visualize them. ...

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AWS: Some Tips for Avoiding Those “Holy Bill” Moments

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Cloud is awesome: almost-100% availability, near-zero maintenance, pay-as-you-go, and above all, infinitely scalable. But the last two can easily bite you back, turning that awesomeness into a billing nightmare. And occasionally you see stories like: Within a week we accumulated a bill close to $10K. And here I unveil a few tips that we learned from our not-so-smooth journey of ...

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A Few Additions to Your Bag of Maven-Fu

Apache Maven is simple, yet quite powerful; with a few tricks here and there, you can greatly simplify and optimize your dev experience. Working on multiple, non-colocated modules Say you have two utility modules foo and bar from one master project A, and another project B which pulls in foo and bar. While working on B, you realize that you ...

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