S3 Replication: Keep Your Data Secure and Always Available
Discover how to configure replication in Amazon S3, the differences between CRR and SRR, and the critical details you need to know for a solid data strategy.
Compa Compila
Learn at your pace. A blog focused on Software engineering and AWS
Latest posts
S3 Presigned URLs: Secure and Temporary Access to Your Objects
Learn how to provide temporary access to your private Amazon S3 objects using Presigned URLs, keeping your bucket secure and blocked from public access.
From flags to subcommands: Rewriting a Go CLI with Cobra
I built an open-source AWS cost optimization tool in Go, but as it grew, the standard flag package became a bottleneck. Here is my experience rewriting the CLI architecture with Cobra, the breaking changes it caused, and why it was worth it.
From 30 to Over 200 Stars in a Week: My Adventure Creating aws-doctor
How a personal project to save costs on AWS ended up gaining traction on Hacker News. I'll share the process, the community feedback, and what I've learned launching my own open source tool.
My First Ruby Contribution to GitLab: From Golang to the Monolith
How is it to contribute to the GitLab monolith without knowing Ruby? I share my experience implementing token validation changes and using feature flags.
From Latin America to UAE: My Personal and Professional Journey in 2025
Reflections on a year of limitless growth. Join me as I summarize my 2025, marked by my new life in Dubai, cloud certifications, and my adventure in the Open Source world.
From Aiming for 1st to Winning 2nd: My GitLab Hackathon Experience
I share my experience competing in the GitLab Hackathon. I'll cover my strategy to win, the unexpected controversy with documentation MRs, and why my 2nd place, while not the goal, feels like a victory.
My Experience as a Notable Contributor at GitLab
Discover the inspiring journey of a developer who went from making small documentation changes to being named GitLab's Notable Contributor for version 18.5. This personal account details the path from initial contributions in Golang projects, like the GitLab CLI and Terraform provider, to the surprising nomination and ultimate recognition. Learn about the challenges, the growth, and the incredible…
How GitLab Can Boost Your Professional Career
Many developers know GitLab simply as an alternative to GitHub. This article shows you why it's much more than that: it's a gateway to the open-source world that can boost your professional growth. Discover the advantages of its community, its rewards system, and events like Hackathons that await you.
Encryption in AWS: A Key Guide for Your Solutions Architect Interview
Are you preparing for a Solutions Architect interview and want to master security concepts? This complete guide is your starting point. We break down the fundamentals of encryption in a simple and direct way: learn the difference between an algorithm and a key, when to use symmetric vs. asymmetric encryption, and how these concepts are applied in the real world with practical examples from key AWS…
From Chaos to Control: Managing Microservice Environment Variables in AWS
Managing environment variables across 40 microservices can be chaotic and insecure. Discover how we tackled this challenge by centralizing secrets and configurations with AWS Parameter Store instead of AWS Secrets Manager. This article offers a step-by-step guide, including Go code examples, to improve your system's security and simplify operations.
Three AWS Associate Certifications in Six Months: My SysOps Admin Experience and Beyond
Mission accomplished! I'm proud to have completed the AWS Associate core by obtaining my Solutions Architect, Developer, and SysOps Administrator certifications. Learn about my journey to the SysOps Admin exam, the essential operational knowledge, and why these three certifications are a game-changer for cloud professionals. Find out what's next for my professional growth!
S3 Bucket Policies: Utility and Practical Examples
Navigating AWS S3 bucket policies can be tricky! This article breaks down what S3 bucket policies are, how they work, and provides practical examples to help you control access and define rules for your S3 buckets. Learn how to manage who can read or create objects, enforce encryption, and even restrict access based on tags or secure transport (HTTPS).
The Small Change That Made a Big Impact
This article tells the true story of how I optimized a backend process that was inexplicably taking 75 seconds longer than it should. Even though we used Go and goroutines for parallel processing, the bottleneck was hiding in the most unexpected place: warning logging. I show you the analysis, before and after data, and a code example so you can see for yourself how such a common operation can…
S3 Bucket Versioning: Advantages and Implications
Learn about the advantages of enabling versioning on S3 buckets and its implications. Also, understand what happens when you suspend versioning on a previously version-enabled bucket.
Lifecycle Policies in S3 Buckets
Learn how you can use lifecycle policies in S3 buckets to move objects from one storage class to another and to automatically delete objects.
S3 Storage Classes
Learn about the differences between the various storage classes available for S3 buckets.
What are S3 buckets and what are they for?
Learn about S3 structure, its physical architecture, its main features and also its limitations.
My AWS Journey
In this article I talk to you about my experience in AWS and I give you recommendations about how to study to get AWS certifications.
Practical application of CloudFront functions
I show you how I solved a navigation problem on my blog using CloudFront functions