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Enterprise Java

Throughput - A Corda story

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I recently rolled off a project focusing on the performance of Corda for a particular use-case. The result of this project lead to us processing 115 million requests within a single day over a network of over 170 nodes. Furthermore, Corda was able to handle 6300 requests per second confirming that the highest requirement of the network was met. This ...

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Unit Testing Anti-Patterns, Full List

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I wrote some time ago about anti-patterns in OOP. Now it’s time to write about unit testing anti-patterns—because they also exist, and there are many. I will try to include every example I know in this list. If you know any others, please add them via a pull request or post a comment below. For each anti-pattern I will try ...

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Work on Apache Camel 3 has finally started

We are starting the work on Apache Camel 3. We are working at multiple levels to improve Camel and introduce new features. The first work has actually started by Guillaume Nodet in the start of October, where he jump started by cleaning up the codebase, removed deprecated code and components, improving the routing engine and other internals in the core. His work ...

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Building monorepo projects with Gradle

According to Wikipedia, a monorepo is as software development strategy where many projects are stored in the same repository. This strategy allows for quick detection of potential problems and breakages caused by changes in dependencies, and it has been adopted by many organizations that work with large scale codebases, such as Google, Facebook, and Twitter. You too can apply this ...

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How to map PostgreSQL Enums to JPA entity properties using Hibernate

Introduction The open-source hibernate-types project allows you to map JSON, ARRAY, YearMonth, Month or database-specific columns (e.g. INET addresses). In this article, we are going to see how you can map a PostgreSQL Enum type to a Java array when using JPA and Hibernate. Maven dependency First of all, you need to set up the following Maven dependency in your ...

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Service Mesh: Istio and AWS App Mesh

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One of the big announcements at AWS re:Invent this week was the AWS App Mesh. Before talking about it though, let’s look at what the heck a mesh is anyway… What is a service mesh? A service mesh is an infrastructure layer for microservice architectures. It handles communication concerns between services, making that communication more visible (or “observable”) and manageable. More ...

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Top 5 announcements from AWS re:Invent 2018

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AWS re:Invent has just completed. It was a huge event with 50,000+ attendees across 7 of the biggest hotels in Vegas, and many new service announcements. Serverless continue to get lots of attention with new lambda enhancements and better container support. The “hybrid” model of using your own datacenter in conjunction with a cloud provider has been fully embraced by AWS ...

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Apache Ignite Baseline Topology by Examples

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Ignite Baseline Topology or BLT represents a set of server nodes in the cluster that persists data on disk.                 Where, N1-2 and N5 server nodes are the member of the Ignite clusters with native persistence which enable data to persist on disk. N3-4 and N6 server nodes are the member of the ...

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