Toptal published and illustrated a lengthy article I wrote on what I call Adminimisation, that is, automating away the boring and routine tasks involved in running a web service. Useful if you program admin dashboards which you or your staff regularly grapple with.).
Adminimisation: Tips for Building Great Admin Dashboards
How to build a robust administrative area that'll help you automate away the boring and routine tasks involved in running a web site
A list of the various nooks and crannies needing backing up followed by a look at the most common failure modes of a backup system
Learn about representing money, rounding algorithms, and anticipating oddball transactions.
A bug hunting ritual that makes things a little easier