til VS knowledge

Some people create single note for each code example, like for example this TIL a repo https://github.com/jbranchaud/til`

That's more like it. This backs up the decision to add a B-Tree index for the created_at column in production. As I mentioned at the beginning of the post, adding an index like this in any production setting, but especially for a table of this size, it is important to do so concurrently and to monitor your app's health metrics during the process.

State machines are hierarchical. They can be made up of simple and composite states. Composite states have sub-states nested within them.

In all the time that I've been building and maintaining Rails apps, I've somehow never noticed that ActiveRecord attributes backed by columns with default values are nil on create.

Dump them in a github repo (like this)

Currently put it all into markdown files here: https://github.com/nikitavoloboev/knowledge

Building a tool to make this easier: https://github.com/learn-anything/learn-anything

And although these are not obsidian vaults, they are also great digital gardens: - My knowledge wiki by Nikita Voloboev - Andy's working notes by Andy Matuschak - maggieappleton.com by Maggie Appleton