No matter how carefully coded, reviewed, and tested your Ruby code is, odds are good that at some point you’ll cause a catastrophic failure to at least one system you’re responsible for. How do you prepare yourself? You need a Ruby debugger. In this post, I’ll cover the whole Ruby debugger process—from finding the issue to determining the root cause. Use these instructions for debugging a single Ruby file, a Rails app, or a gem.
Great writers use metaphors to get their point across so let me give that a try real quick. Bugs are nasty little pests, mm’key? It’s hard to get rid of them but apart of just spraying poison everywhere, there are only a few options left. One of those options is using a natural predator to those bugs, a predator like birds. So birds can help you get rid of bugs. I work for a company called Dashbird that help developers debug their AWS Lambda applications. See what I did there?
Working in C#, as with any language, you’ll soon find that that you need to do some debugging. With C#, thankfully, due to a plethora of debugging tools and techniques, troubleshooting is usually straightforward.
When I first joined this startup that makes an observability platform, I was a front-end Javascript developer who had never ssh’ed into production–I didn’t even know what tracing or monitoring or metrics were, let alone what it meant for logs to be structured or how they could be useful to me. But within a couple months I joined the on-call rotation, and now share responsibility in our services along with the rest of my team.
Netlify functions are a quick, easy and powerful tool, but like most serverless platforms, they can be even more difficult to debug and monitor than traditional server applications. It’s a hard environment to precisely recreate locally, there’s no machine you can SSH into in a pinch, and no built-in error notifications. Your code is going to break eventually, and you need the tools to fix it.
Let’s start with the happy ending — after a long search, we managed to identify a Netty memory leak in one of our log listeners and were able to troubleshoot and fix the issue on time before the service crashed.
If you use PHP or you find yourself “adopting” a PHP app (like I did a few years ago), you must know how to debug PHP. In this detailed guide to PHP debugging, you’ll see some debugging techniques that apply to almost any programming language. But don’t worry. I’ll get into the specifics that apply to PHP, from the basics all the way to fully integrated debugging techniques. Let’s start with a basic technique in PHP debugging: outputting and logging values.
With AWS Lambda, we get scalability and resilience out-of-the-box. What’s more, AWS also provides built-in monitoring, logging and tracing support through CloudWatch and X-Ray. These built-in tools provide a good starting point but many developers eventually outgrow them as their serverless application becomes more complex. In this post, let’s take a serverless application and see how Dashbird can help you debug a serverless application.
This is the story of a Java debugging journey that started with a question I couldn’t answer about Java stack traces. As a long time Java programmer, I am approached for help by developers who encounter unusual problems in the language.
