How I Crashed a Server (and Learned to Prevent It with Grafana, Prometheus, and Telegram)
Keep monitoring and don’t get caught with your pants down
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Let me tell you a story about how I crashed my workplace’s server due to a lack of disk space and how I solved the …
![[Tech Pills] Frontend concurrency control (with S3 file upload) A practical guide to implementing sequential, batched, and streamed uploads with concurrency primitives and mutex locks](https://i0.wp.com/d604h6pkko9r0.cloudfront.net/wp-content/uploads/2025/07/28120009/hero-1200.webp?resize=1200%2C800&ssl=1)
[Tech Pills] Frontend concurrency control (with S3 file upload)
A practical guide to implementing sequential, batched, and streamed uploads with concurrency primitives and mutex locks
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Last Updated on August 18, 2025 Raw Portuguese version is here: https://tech-pills.github.io/2025-07-27-frontend-concurrency-control/ Hello there! Hope you’re doing well. The purpose of Tech Pills here is …
Internationalization in React Apps
Why It Matters and How to Get Started
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When building web applications, it is easy to focus solely on your immediate audience. However, the internet has no borders, and your app may reach …
An Introduction to Ruby on Rails – From someone with a frontend background
New to Rails? Let’s skim over the basics of the framework!
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If you’ve come here looking for a post from a Ruby on Rails expert, I’m sorry to inform you that I’m not that person. What …
How To Solve Every Programming Problem
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If I had to summarize a programmers’ job in a few words, I would say we are ‘problem solvers’. However, it’s not that simple. Some …
Integrating React Native into iOS Apps
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One of the beauties of our programming world is the ability to choose between a wide range of technologies and tools to build applications. For …
Everything You Need To Know About Redux
Down in a hole uncovering why you would use it, no excuses now!
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This is the day. You will finally learn how to use Redux once and for all, or get all of the money you’ve spent to …
Back-end Design Patterns in Rails
Eliminate Bloated Code!
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Introduction In Rails applications, it’s easy to fall into the trap of scattering business logic where it doesn’t belong, especially in controllers. At first, it …
Tracking Activity on your App
Turn data into smart decisions and valuable insights
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When it comes to web applications, there’s a vast range of topics that can be explored. One of the most relevant is tracking, which involves …
RailsConf 2025 Takeaways: It’s fun to have fun
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Last week, I attended RailsConf 2025, which was one of the highlights of my career. An occasion to meet people, learn, and celebrate the conference …
Codeminer42’s Engineering Blog
