6 articles
You deleted a commit, something broke and you do not know when, or you need to undo something you already pushed. Five commands almost nobody uses until they need them, explained with the exact situation that calls for each one.
Almost nobody commits a password on purpose. They leak through four routes that do not look dangerous, and one of them leaves the key visible even after you delete it in the next commit.
It compiles, it passes the tests and it looks tidy. That does not mean it is right. Six concrete things worth checking, in the order the real problems show up.
Nobody has time to test everything. But there are four kinds of test that give you almost all of the benefit for very little effort, and several that get written constantly and are worth nothing.
The screen takes four seconds and the server is not under load. It is almost always the same problem, it has a name, and it is fixed by changing one line. How to spot it without special tools.
A user reports an error from two hours ago and there is no way to find their requests among millions of lines. Three changes that turn your logs into something you can query, without switching tools.
