Took me 1 month to be productive. Went in to a large rails codebase as a backend developer in the middle of a v1 to v2 rewrite and it had custom folders with t

Took me 1 month to be productive. Went in to a large rails codebase as a backend developer in the middle of a v1 to v2 rewrite and it had custom folders with their own conventions on where to put stuff. All that with no documentation except for the setup. What I did was just ask how the app works + specific workflows in front-end side of things and just connect the dots on the backend part. Most of my troubles where on where to put modules because of their existing conventions. Tips: 1. Ask a lot 2. Read the code 3. A debugger helps 4. Make sure you add tests for areas you touch.