Hi, I'm Mudassar Hassan
RSS FeedI'm a senior product engineer. I build and scale web applications — mostly Ruby on Rails, React and JavaScript — and I've spent the last several years doing it remotely for distributed teams. Currently at Intercom.
Read more on the About page — bio, experience, and CV.
Recent Posts
Your index is being used. It's still slow.
The same index on a 500k-row Postgres table goes from 19ms to 0.027ms — not because it changed, but because the value being searched did.