A Java geek

Last year, I started to use Excalidraw as a diagram tool. However, the SVG images didn’t display the font correctly. In this post, I’d like to explain the problem and offer a solution. Let’s create a sample drawing with Excalidraw. If you open the link, it should look something like this: However, in a browser, it looks like this: The code is straightforward: <img src='/path/to/sample.svg'> The font doesn’t display correctly.

I never moved away from Docker Desktop. For some time, after you use it to build an image, it prints a message: What's Next? View a summary of image vulnerabilities and recommendations → docker scout quickview I decided to give it a try. I’ll use the root commit of my OpenTelemetry tracing demo. Let’s execute the proposed command: docker scout quickview otel-catalog:1.

Last year, I wrote my first yearly retrospective. I liked the experience, so I’m trying one more time. Let the future decide if it will become a trend or not. Before diving into our safe technological world, my thoughts go to Ukraine, to my friends who had to flee their own country, to other friends who fought on the front to defend it from an imperial power, and to all victims of an old kleptocrat who clings to power despite the cost to others.

In early 2021, I started to work on the Apache APISIX project. I have to admit that I had never heard about it before. In this post, I’d like to introduce some Apache projects that are less well-known than HTTPD or Kafka. Apache APISIX APISIX is an API Gateway. It builds upon OpenResty, a Lua layer built on top of the famous nginx reverse-proxy. APISIX adds abstractions to the mix, e.g., Route, Service, Upstream, and offers a plugin-based architecture.

Apache APISIX is an API Gateway, which builds upon the OpenResty reverse-proxy to offer a plugin-based architecture. The main benefit of such an architecture is that it brings structure to the configuration of routes. It’s a help at scale, when managing hundreds or thousands of routes. In this post, I’d like to describe how plugins, priority, and phases play together and what pitfalls you must be aware of.

In a few words, the idea of canary releases is to deliver a new software version to only a fraction of the users, analyze the results, and decide whether to proceed further or not. If results are not aligned with expectations, roll back; if they are, increase the number of users exposed until all users benefit from the new version. In this post, I’d like to detail this introduction briefly, explain different ways to define the fraction, and show how to execute it with Apache APISIX.