Stabilize, Modularize, Modernize: Scaling Slack’s Mobile Codebases
Part I: Stabilization
A Simple Kubernetes Admission Webhook
While adding a recent feature to our Kubernetes compute platform, we had the need to mutate newly-created pods based on annotations set by users. The …
Going from Coder to Slack Engineer
Over 70% of the files uploaded on Slack are images, and over 75% of those images are screenshots. What this tells us is that though images are ephemer…
The Case of the Recursive Resolvers
What Happened During Slack’s DNSSEC Rollout
Developing in the Open
We use plenty of open source tools at Slack and we've benefited immensely from the wider Android, Kotlin, and Gradle communities. We also try to be go…
How Two Interns Are Helping Secure Millions of Lines of Code
How do we find security vulnerabilities at Slack?
Building the Next Evolution of Cloud Networks at Slack – A Retrospective
Discussing what we've learnt and improvements we've made since we built a new network architecture at Slack
Infrastructure Observability for Changing the Spend Curve
A deep dive on how we crafted an order of magnitude change in our spend (10x reduction compared to baseline growth) over the last two years with iterative understanding and changes in Slack’s Continuous Integration (CI) infrastructure.