Hi Everyone,

We invite you to our first meetup of the 2025 at Erlang Solutions in Kraków, continuing our tradition of engaging talks!
This month, we have two great presentations lined up for you.

Whether you’re a seasoned developer or beginner, this meetup is the perfect place to learn, share and connect.
Between the talks, there will be a short networking break with pizza and drinks, giving you a great chance to meet and chat with other tech enthusiasts in Kraków

Please note that space is limited, so RSVP to confirm your attendance.

AGENDA:
Wojtek Mach - Developer @Dashbit
Topic: Library Client/Server Symmetry
Abstract: As developers we often work with standardized formats and have functions to encode/decoded them. For example, we have formats like JSON, CSV, ISO 8601, etc and I’d call libraries for them symmetrical, they can work with either end of the format. We also work with network protocols like HTTP and for example we have: Req, an HTTP client, and Bandit, an HTTP server. Req and Bandit, even though they implement the common standard, HTTP, share almost no code and have different data structures. Why? Perhaps there are opportunities for symmetry?

Nelson Vides - Senior Developer @Erlang Solutions
Topic: The Watchful Gaze of Prometheus
Abstract: Metrics are something critical for our services, but the community has seen badly maintained solutions over the years.
One such library is prometheus, one of the most downloaded packages in Hex.pm
We’ve set to change this, and we want to tell you about it.
But first, do you know what it is meant when talk about observability?
Do you know the difference between metrics and instrumentation?
Do you know what is the role of Telemetry, and what is the role of Prometheus? Are you familiar with how to best use your Prometheus client library?
In this short presentation, we’ll go through an overview of the topic of observability, some hints on how to instrument and add metrics to your application – with prometheus, how this dependency works, and what have we done about it to make it work best.