I Made Our Attendance API 75% Faster By Fixing One Stupid Mistake (opens in new tab)

Originally published at imrantech.hashnode.dev It Started With Complaints I work on an HRMS platform and our HR team kept telling me the attendance page was too slow. I ignored it the first couple of times — I thought maybe it was their internet connection or a slow PC. Then my manager asked me about it. Okay fine. Time to actually look at this. The attendance API was taking over 1 minute to return data for 6500 employees. One full minute. You could make a coffee and come back and it still wo...