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We recently reduced CPU usage across our fleet by 80%. One key technique that made this possible was a lightweight profiling strategy that we could run in production. This post is about the ways we approached instrumentation, the tradeoffs involved, and some tools you can use to optimize your own apps (including code!). Background Nylas is a developer platform that provides APIs to integrate with

Earlier this year, we published a blog post about how our team is building a new email app using React, with a primary goal of extensibility. That means allowing developers to write plugins that change the app’s behavior, just like in Chrome or emacs. Over the past few months, we’ve designed a new way to structure large React applications in order to reliably and safely support plugins. This invol

We love Python at Nylas. The syntax is simple and expressive, there are tons of open source modules and frameworks available, and the community is welcoming and diverse. Our backend is written exclusively in Python, and our team frequently gives talks at PyCon and meetups. You could say we are super fans. However, one of Python’s big drawbacks is a lack of clear tools for deploying Python server a