The most impactful change I made in 6 years of professional programming was 1 LOC in one file and about 5 LOC in another file. It was a 10x reduction of queries

The most impactful change I made in 6 years of professional programming was 1 LOC in one file and about 5 LOC in another file. It was a 10x reduction of queries at a billion queries per day scale. I fixed a broken cache and it took me over two weeks to find the issue. On the other hand I put out hundreds of LOC per hour, when writing the basic HTML for an internal crud app. This metric is as useless as it can be. Even as an average. It has too much to do with your role and tasks.