Server racks with blue lighting

AWS Lambda MicroVMs: stateful sandboxes with full lifecycle control

AWS just shipped something that reframes what “serverless” can mean. Lambda MicroVMs are not Lambda Functions with a bigger timeout. They are a fundamentally different primitive: stateful, VM-level isolated environments with an explicit lifecycle you control. The key shift: instead of getting a recycled process for 15 minutes, you get a dedicated Firecracker microVM that lives up to 8 hours — and you decide when it starts, suspends, resumes, and terminates....

June 23, 2026 · 6 min · Oleksandr Kulbida

AI agents in practice: self-learning, knowledge bases, and why fewer agents is better

Building AI agents sounds fun until you actually build one. Then a different set of problems shows up — ones nobody writes about. Here is what I have learned running agent systems in production: self-improvement conflicts with git, most knowledge bases hit a wall sooner than expected, and adding more agents almost never helps. The self-improvement problem One of the selling points of agents like Hermes is that they can self-reflect and improve — updating their own rules based on experience....

May 15, 2026 · 6 min · Oleksandr Kulbida

Hardening Claude Code: permissions, hooks, and custom commands

Claude Code is a powerful local agent. By default it can read most files on your machine. Here is how to lock it down and extend it for your workflow. Block access to credential files Put this in your global Claude settings at ~/.claude/settings.json. Claude will refuse to read any of these paths — even if you accidentally ask it to. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 { "permissions": { "deny": [ "Read(~/....

April 10, 2026 · 3 min · Oleksandr Kulbida
Software engineering and AI

The future of software engineering: key takeaways from Martin Fowler's retreat

Martin Fowler published a fascinating report from a February 2026 retreat where senior engineering practitioners from major tech companies gathered to discuss how AI is reshaping software development. It’s dense, so here’s what stood out to me. Where Does the Rigor Go? The biggest question of the retreat: if AI writes the code, where does the engineering discipline move? The answer is — it doesn’t disappear, it migrates: Upstream to specs — Bad specs produce bad code at scale....

March 12, 2026 · 4 min · Oleksandr Kulbida
AI and machine learning

16 GitHub repos every AI engineer should know in 2026

If you’re building AI systems in production — or just getting started — these repos are worth bookmarking. LLM Serving & Inference vLLM (66k+ stars) — The industry standard for high-throughput LLM serving. Continuous batching and maximum GPU utilization. If you’re serving LLMs in production, this is probably what you should be using. Ollama (162k+ stars) — The easiest way to run LLMs locally. Great for fast experimentation before you commit to a cloud setup....

March 12, 2026 · 2 min · Oleksandr Kulbida