hi, I'm zak.
I work on realtime infrastructure at Ably and write here occasionally.
Writing about distributed systems, building teams, and how software actually gets built.
# now · Sept 2026
+ shipping durable transport for AI agents
~ writing blog posts
- side projects that aren't writing
Recent writing
everything →| Date | Post | Read |
|---|---|---|
| May 21, 2026 | AI token streaming isn't about SSE vs WebSockets #ai | 8 min |
| May 18, 2026 | Generations of AI applications: conversational, delegative, and collaborative #ai | 9 min |
| May 13, 2026 | LLMs are breaking 20 year old system design #ai | 5 min |
| Apr 23, 2026 | How to make SSE token streams resumable, cancellable, and multi-device | 9 min |
| Apr 20, 2026 | All your agents are going async | 8 min |
| Feb 28, 2026 | You are the bottleneck #ai #agents #dev | 4 min |
| Feb 24, 2026 | If code is cheap, intent is the currency #dev #ai | 6 min |
| Feb 11, 2026 | A chatbot's worst enemy is page refresh #ai #system-design | 7 min |