LESSONS FROM 9 MORE YEARS OF TRICKY BUGS

Summary from the TLDR Web Dev newsletter

In this developer's nine years of tricky bugs, common coding errors involved empty cases, date-related logic, data format upgrades, and aliased dictionaries. Good testing had exploratory methods, smaller test environments, and accounted for varied access rights. Debugging relied on detailed logging, collaboration, alerting systems, and reproducing issues with minimal examples.