Posts

Have you ever deployed a new version of your app in Kubernetes and noticed errors briefly spiking during rollout? Many teams do not even realize this is happening, especially if they are not closely monitoring their error rates during deployments. There is a common misconception in the Kubernetes world that bothers me. The official Kubernetes documentation and most guides claim that “if you want zero downtime upgrades, just use rolling update mode on deployments”. I have learned the hard way that this simply it is not true - rolling updates alone are NOT enough for true zero-downtime deployments. And it is not just about deployments. Your pods can be terminated for many other reasons: scaling events, node maintenance, preemption, resource constraints, and more. Without proper graceful shutdown handling, any of these events can lead to dropped requests and frustrated users. In this post, I will share what I have learned about implementing proper graceful shutdown in Kubernetes. I will show you exactly what happens behind the scenes, provide working code examples, and back everything with real test results that clearly demonstrate the difference. ...

Step-by-step guide to setting up remote LAN access using WireGuard on a MikroTik hEX S router and a cloud VM. Covers RouterOS CLI, firewall rules, routing, and client configuration.

How to securely store and use secrets (passwords, tokens, API keys) in MikroTik RouterOS scripts without hardcoding them in plain text.

The Internet is plenty of articles that telling why you should not be using http.DefaultClient in Golang (one, two) but they refer to Timeout and MaxIdleConns settings. Today I want to share with you another reason why you should avoid using http.DefaultClient in your code. ...

After extensive travel, I’ve accumulated several mobile numbers and, naturally, physical SIM cards. Switching them out each time became tedious, even after buying a basic Nokia with two SIM slots, which only helped temporarily. When a friend asked if I could set up a Spanish number for account registrations, I realized it was time to automate the process. If you’re dealing with multiple SIM cards and want to receive SMS in Telegram, I have a straightforward approach. You’ll need a Linux machine that’s always online, connected to the internet, and about $10. ...