Este ano fiz algumas observações sobre a Blackfriday olhando de fora, por curiosidade relacionada com o trabalho que já fiz com empresas de e-commerce. Eu gosto de observar operações de larga escala e estes eventos são interessantes para aprender e entender o impacto de sistemas sob cargas dificeis de estimar. …

Back in 2000 Joel Spolsky published a test to help gauge the quality of a software development team. It is a list of 12 items where if you had 10 or less meant you (your company) was in trouble. The first time I've read it made me think about the…

TL;DR A checklist to help migrate your Python app from AWS to GCP. You have to refactor how you access your cloud resources and I show how to trick boto into using GCP instead of AWS for S3 replacement by some compatibility mode, code in this gist. I’ve not been…

Foreword After 2015 I decided to limit the number of conferences I talk and attend — I used to go at least one conference per month and most of them was because I would be speaking. I never knew how I did get into this speaker business. …

Disclaimer — This post is a summary and mix of a couple of drafts I had stashed at medium for at least 4 years. I speak for myself here, not my current or former employers. I wrote this to remember certain things in my career and hopefully it may be useful to…

From wikipedia: In control theory, observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. It is bad enough to know about problems in your systems through your customers. …

A tongue-in-cheek brain dump on companies, processes, leadership and IT operations. Probably this is a fruit of biased learning and bad experiences fading in my memory. On vendors, architecture and innovation (The part where I say that system architecture is not planned, it emerges) Companies have being under pressure as their customers complains about slowness…

AWS Lambda is the flagship product of the serverless architecture. Well integrated into the whole AWS ecosystem, it is a packaging and orchestrating system based on containers. Natively it runs Javascript, Java and Python but through what is called a "shim" it can run programs in other languages, as long…

This is the book list I recommend for tech folks like me that transitioned to management. My background is system administration and programming but I always loved to understand how executives and companies came to be. If you read all that, consider you got grade A on my mind's MBA. …