Leandro Lima

On October 19 and 20, 2025, the AWS North Virginia (us-east-1) region faced a disruption that took down services worldwide, from small websites to large e-commerce sites (including Amazon itself), banks and government services.

Introduction I've been working on a reminder assistant that operates through WhatsApp.

Introduction One thing you might notice when working with LLM-based coding tools is how much they struggle to get the right information into their context windows.

Note on AI usage: this blog post was initially sent in a conversation format to a friend through Signal and converted into a blog post by Claude Opus 4.

Introduction Back when I first started with Python, my first web framework wasn’t Django or Flask — it was Tornado Web.

Introduction In a dynamic development environment, the efficiency and automation of deployment processes are key to the speed and reliability of software releases.

Introduction Database schema management is essential as projects evolve over time.

Introduction In this post, we’ll delve into AWS Lambda, AWS's serverless computing platform.