Lucca Di Benedetto

Why I refactored my benchmarking framework to be agent-first

Wed, 27 May 2026 12:00:00 +0200

I just merged PR #3 in benchctl, a benchmark orchestration tool I have been developing on my own.

I realised that developing a UI, plotting and data analysis features is not really a good focus for this project.

Now, with AI agents, that type of code is pretty cheap to produce. One could even argue that the orchestration code is also quite cheap to produce. But there is a fundamental difference in both. The orchestration code is something that actually repeats itself / something that I reimplement every time I do a new serious benchmark. The rest (plots, data-analysis) tends to be very domain-specific and it’s very hard to add actually good, useful primitives there that I can guarantee will be used.

How I optimized our HyperFaaS Docker Compose setup by 99.6%

Mon, 11 May 2026 18:00:00 +0200

HyperFaaS’s Compose files model workers, leaves, and routing controllers at different scales. The layout that shipped before PR #62 (92f3b2a) was honestly terrible: every replica that needed a custom image went through Compose’s build: path with its own tag, so a “full refresh” meant many separate Docker builds of the same Go binaries (for example eight worker images on the large profile, each a full compile), and the Dockerfile did not yet use BuildKit cache mounts for go mod and go build. It worked, but it was terribly slow. We have three setups: small, medium and large. Each setup has their own YAML file with a different number of workers, leaves and routing controllers.

Emoji Embeddings

Mon, 11 May 2026 17:04:29 +0200

Automatic Emoji Suggestions for a Tiny Private Lists App

I have a small lists webapp that I use privately with my partner. It is just where we keep recurring lists, shopping notes, reminders, and shared household things.

At some point I noticed that lists feel nicer when items have emoji. tomatoes looks better with 🍅 next to it, coffee looks better with ☕, and train tickets looks better with 🚆 or 🎟️, etc.

Recommendations

Tue, 23 Dec 2025 17:47:32 +0100

I realized that I never really wrote down a list of all the different creators / people in the tech scene that I follow, so this is it.

People

Neetcode. He is mostly known for his videos on leetcode problems, but he also has many great videos on other topics like AI and system design. He can explain leetcode solutions really well. Recommended if you are interested in learning about actual programming, data structures and algorithms.

Hi!

Wed, 03 Sep 2025 00:00:00 +0000

My name is Lucca and I’m a software engineer. I’m from Argentina and I’m currently living in Berlin, Germany. I’m interested in building simple software that solves complex problems. I’m on my final semester of my Master’s degree in Information Systems Management at the TU Berlin, currently working on my Thesis on designing and implementing an ultra scalable open source serverless platform called HyperFaaS. I also work as an assistant researcher at the Scalable Software Systems chair, where we focus on cloud computing and distributed systems. I’m also a passionate theatre actor and music enthusiast.

Awards

Fri, 03 Jan 2025 00:00:00 +0000

Throughout my life, I have tried to participate in every opportunity that comes my way. This way, I was able to gather experience and in many cases excel at different activities, for which I have been recognized.

DAAD Scholarship

After finishing high school in Argentina, I applied to a DAAD Scholarship and moved to Germany. This scholarship is awarded to students with outstanding performances and very few receive it every year. In May of 2020 I was awarded the full scholarship, which allowed me to study in Germany. When I graduated from my Bachelor degree in Wirtschaftsinformatik (Business Informatics) @ TU Berlin, I was awarded with an extension of the scholarship to pursue my Master’s degree.

Projects

Fri, 03 Jan 2025 00:00:00 +0000

Here are some of the projects I’ve been working on:

HyperFaaS

HyperFaaS is a scalable serverless platform built from the ground up by my team at 3s @ TU Berlin as a research project. I am the main contributor and have been around since the start of the project. It is built entirely in Go and encompasses multiple interacting components. It’s able to run serverless functions as docker containers and auto-scale them based on demand. This project gave me a lot of experience working with Go and platform-like systems.

Publications

Fri, 03 Jan 2025 00:00:00 +0000

Validating Alerts in Cloud-Native Observability

Observability and alerting form the backbone of modern reliability engineering. Alerts help teams catch faults early before they turn into production outages and serve as first clues for troubleshooting. However, designing effective alerts is challenging. They need to strike a fine balance between catching issues early and minimizing false alarms. On top of this, alerts often cover uncommon faults, so the code is rarely executed and therefore rarely checked. To address these challenges, several industry practitioners advocate for testing alerting code with the same rigor as application code. Still, there’s a lack of tools that support such systematic design and validation of alerts. This paper introduces a new alerting extension for the observability experimentation tool OXN. It lets engineers experiment with alerts early during development. With OXN, engineers can now tune rules at design time and routinely validate the firing behavior of their alerts, avoiding future problems at runtime.