Clojure microservices for JavaScript developers part 2

This series was co-written by Musa Barighzaai and Tyler Sullberg. In the previous post, we explored high-level differences between thinking in Clojure compared to thinking in JavaScript. We are now ready to start building our first Clojure microservice. The microservice we are going to build will be very simple. It will be an HTTP server that uses a Redis data store to count how many times a given IP address has pinged the /counter endpoint.


Clojure microservices for JavaScript developers part 3

This series was co-written by Tyler Sullberg and Musa Barighzaai. This is the third and final post in a series of posts for JavaScript developers about how to set up Clojure microservices. The previous posts were: Those previous posts are useful context, but you can clone the repo and jump into this post without reading them.


Clojure microservices for JavaScript developers

This series was co-written by Tyler Sullberg and Musa Barighzaai. CircleCI is growing, which is wonderful. However, one of the growth challenges we have is that our backend is primarily written in Clojure, and few developers know Clojure. Many CircleCI engineers, including myself, have learned Clojure on the job. Before joining CircleCI, I was a JavaScript developer. As the lingua franca of software engineers, JavaScript is a relatively straightforward language to learn.


How to Instrument a Java App Running in Amazon EKS

As we start to see big moves from monolith deployments to microservices, the adoption of Kubernetes has become top of mind for many SREs. Organizations can leverage the open-source system to automate deployments, scale, and manage containers, making Kubernetes one of the primary solutions for delivering workloads. However, maintaining the system can be difficult and, in some cases, overwhelming.


Java library for your cloud-hosted tests with Loadero

Have you ever wondered, while manually creating tests in Loadero, that it would be nice to have some library that you can use to create tests programmatically? Sounds nice, isn’t it? Well, luckily, Loadero does have this option now. In this blog post I would like to introduce you to the recent creation of Loadero’s team — Loadero Java library.


Kotlin vs Java: 10 Years In

Java is as old as the Internet itself. It is the child of the mid-90s and exploded into the world just as dial-up started to take over suburban phone lines. In a way, it can be seen as the original Boomer of programming languages — not as elderly ancient as the C-families, but not as young and hip as JavaScript and its multitude of frameworks and libraries either.


We Crunched 1 Billion Java Logged Errors - Here's What Causes 97% of Them

97% of Logged Errors are Caused by 10 Unique Errors It’s 2021 and one thing hasn’t changed in 30 years. DevOps teams still rely on log files to troubleshoot application issues. We trust log files implicitly because we think the truth is hidden within them. If you just grep hard enough, or write the perfect regex query, the answer will magically present itself in front of you.


Top 10 Java Linters

If you want to ensure code maintainability over the long term, you should follow best coding practices and style guide rules. One of the best ways to achieve this, while also potentially finding bugs and other issues with your code, is to use a linter. Linters are best described as static code analyzers because they check your code before it even runs. They can work inside your IDE, run as part of your build process, or be inserted into your workflow anywhere in between.

Instrumenting Java Applications for Tracing with OpenTelemetry and Jaeger

The aim of this article is to demonstrate how you can instrument a Java application using Opentelementry and Jaeger. In this example, we will be instrumenting our Java application using OpenTelemetry and the OpenTelemetry Java client, and the tracing data will be exported and visualized using Jaeger. We will use the Jaeger backend as it is compatible with common tracing standards like Zipkin, OpenTelemetry, and OpenTracing.