Knowledge loss
Example: mempool / mempool
What it measures
Share of the lines of a file (by blame) written by authors without a commit in the last 180 days.
How to read it
Height is lines of code. White means the code comes from active authors, red means most of it comes from authors who are gone.
low
highest value in project
Why it matters
Tall red buildings are a lot of code that hardly anyone in the team still knows. Changes there are slow and risky, good candidates for pairing, documentation or a handover.
