Measure, then fix — in that order, every time.
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A rigorous treatment of frontend performance: the rendering pipeline, Core Web Vitals and what they actually measure, the profiling workflow, and the architectural decisions that determine whether a site is fast before you optimise anything.
3 modules · 13 lessons · 7h 21m
You cannot optimise what you cannot picture.
Daniel writes the kind of frontend code that is still readable three years later, and he teaches accordingly. He is uninterested in framework tribalism and spends the first module of every course on the platform primitives underneath. Learners describe his rendering-performance lessons as the point the subject stopped being mysterious.
Engineering Manager, Developer Experience, Northgate Labs
Ben's job is to make other engineers faster, which has made him a careful observer of where time actually goes. He teaches testing, tooling and code review — the unglamorous middle of software engineering — and he makes a persuasive case that this is where seniority actually lives.
3,105 reviews
Solid content, but I came in from a non-technical background and the assumed knowledge in module four caught me out. The prerequisites could be clearer about that. Everything before it was excellent.
The instructor is honest about what does not work, which is rarer than it should be. There is a whole lesson on a failed approach and why it failed. I learned more from that than from most successful case studies.
Watched it over three weeks of commutes. The transcripts are accurate enough that I could read on the train and watch the demos later. That is a small thing that made the whole course possible for me.
The engineering around the model, which is where projects actually fail.
Anders Lindqvist · Arjun Mehta
18.9K
Charts that change a decision, not charts that decorate a deck.
Grace Tanaka · Devon Clarke
44.7K
Types that catch real bugs without making the codebase unreadable.
Daniel Roth
62.8K