TL;DR note: if you want the bzip2 -9 version of this post, scroll down to the very last section for some quick pointers. If you want to learn a bit about Linux system logs, please continue, as we’ll talk about all these and more.

No matter which path of the stack you work on, it’s crucial you make sure your website or API is up and running. We wanted to create a tool that can give you superpowers. Enter, Sematext Synthetics! You can monitor the availability of APIs and websites as well as their performance, and user journeys. This means 24×7 monitoring from multiple locations around the globe with alerts when things go wrong!

Apache Solr was always ready to be extended. What was only needed is a binary with the code and the modification of the Solr configuration file, the solrconfig.xml and we were ready. It was even simpler with the Solr APIs that allowed us to create various configuration elements – for example, request handlers. What’s more, the default Solr distribution came with a few plugins already – for example, the Data Import Handler or Learning to Rank.

If you’re using Linux, I’m sure you bumped into journald: it’s what most distros use by default for system logging. Most applications running as a service will also log to the journal. So how do you make use of these logs to: In this post, we’ll answer all the above and more. We will dive into the following topics: There are lots of other options to centralize journal entries, and lots of tools to help.

What is the most important feature an Express.js application can have? Maybe using sockets for real-time chats or GraphQL instead of REST APIs? Come on, tell me. What’s the most amazing, sexy, and hyped feature you have in your Express.js application? Want to guess what mine is? Optimal performance with minimal downtime. If your users can’t use your application, what’s the point of fancy features?

Where are Docker container logs stored? There’s a short answer, and a long answer. The short answer, that will satisfy your needs in the vast majority of cases, is: From here you need to ship logs to a central location, and enable log rotation for your Docker containers. Let me elaborate on why with the long answer below.

There are 1.3 billion websites out there in the great unknown and it’s hard not to think about what makes them different from one another. Why do users flock to one website and ignore the other completely? One major differentiator is, of course, content. I’m not going to dwell on what type of content is better. Another reason why users stick to one website over another is the user experience. Today we’ll be looking at a third major differentiator: Website Performance.

Have you ever grown tired of running the same kubectl commands again and again? Well the good folks over at the Kubernetes team understand you. With the addition of custom resources and the operator pattern, you can now make use of extensions, or addons as I like to call them, to the Kubernetes API that help you manage applications and components. Operators follow Kubernetes principles including the control loop.

eBPF has revolutionized the observability landscape in the Linux kernel. Throughout our previous blog post series, I covered the fundamental building blocks of the eBPF ecosystem, scratched the surface of XDP and showed how closely it cooperates with the eBPF infrastructure to introduce a fast-processing datapath in the networking stack. Nevertheless, eBPF is not exclusive to kernel-space tracing.