Case Studies

Case studies that show how technical decisions were actually made.

This section gathers semi-anonymous cases focused on diagnosis, trade-offs, and operational impact. It is a more direct way to show how I think and decide in real contexts.

Case Study

Node.js batch processing without a rewrite

Editorial refactor story about a Kafka and MongoDB pipeline: event loop diagnosis, async generators, and operational impact without infrastructure changes.

Stable event loop during large batches Constant memory usage Refactor delivered in hours, not weeks

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Case Study

FinOps for a multi-tenant SaaS: AWS, Cloudflare, and per-tenant cost

Case study on cost optimization for a SaaS platform on AWS, with strategic use of Cloudflare, real per-tenant measurement, and a cumulative reduction close to 85%, without pausing development.

Cumulative reduction close to 85% Per-tenant cost now measurable, no longer estimated Development and new features never stopped

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