Leiden.dev • Creating context from code • A guide to SLOs

May edition

We've got two talks for you! Adam Castle will talk about Comper, and Adam Hynes will tell you about Service Level Objectives (SLOs).

Creating context from code for your co-workers by Adam Castle.
Comper is a living, zoomable map of your entire codebase, think Google Maps, but for software. It lets engineers and architects navigate from high-level architecture down to individual functions in a single canvas, with real-time collaboration built in and your code staying on your own infrastructure. This talk will include a demo and Q&A. Comper's co-founder Jouke will be there to answer questions.

Taming alerts in a microservice world: a practical guide to SLOs by Adam Hynes.
In this talk, we'll walk through what SLOs are, why they're worth adopting, and how concepts like error budgets and burn rates give you a principled framework for deciding when to react and when to relax. We'll also look at how SLOs fit alongside traditional alerting — because it's not always one or the other — and discuss a practical strategy for rolling them out across a landscape of many services without losing your mind.

Doors open at 19:00
Talks start at 19:30

📅 Thursday, 21 May 2026 🕒 19:00 - 22:00
📍 Café De Keyzer, Kaiserstraat 2-4, Leiden (city center)
❣️ Upstairs