Slack Engineering
Messaging at scale, real time presence, search and the slow work of migrating a large PHP codebase without downtime. Practical, honest about constraints, and closer to the problems a normal company actually has.
Guide
System Design
Slack
Advanced
Free
Where this fits
Useful counterweight to blogs from companies with unlimited engineers. Slack writes a lot about migrating and scaling systems they could not simply switch off.
Design Gurus covers the underlying real time and messaging patterns if you want the theory alongside.
Ready to start?
Opens on Slack in a new tab.
Stuck on something specific?
Writing only gets you so far. If you want an answer to your situation rather than the general case, book a session and we will work through it together. Every session is free; a few slots open each week.
Follow along
New writing, resources and project ideas land here first.