Master the craft. Charm the machine.

I had three indexes doing absolutely nothing because the columns were in the wrong order for the queries we run. Twenty minutes of the index chapter, plus a plan I could finally read, and one endpoint went from painful to instant. Written squarely for people w...

The moment where he reorders four lines of a Dockerfile and the rebuild drops from two minutes to nine seconds is the most immediately applicable thing I have watched all year. I applied it to three of our services the same afternoon.

Chapter one runs a naive pipeline over a real corpus and lets it confidently retrieve the wrong section in front of you. Everything afterwards is motivated by a problem you have already watched happen, and that structure is why the fixes stick.

Once you have seen that a branch is a small file containing forty hex characters, most of Git's menace evaporates. I have stopped memorising command incantations and started asking what state I want the graph to be in, which turns out to be a much shorter rout...

It genuinely does begin with one file inside an existing JavaScript project rather than an empty folder. That matters enormously, because courses that start green-field never tell you what to do about the other two hundred files you already have.

Choosing examples that sit on the boundary of a category rather than comfortably inside it is the single change that improved my results most. Three well-picked edge cases beat fifteen obvious ones and I would never have worked that out alone.