Writing
Notes from the work. A few a year, when something is worth writing down.
v1.4
The cheapest millisecond is the one you never spend
Most of a slow checkout is work nobody asked for. How to find it before you buy a bigger machine.
v1.3
What a double-entry ledger taught me about state
Never update a balance. Append what happened and let the sum speak.
v1.2
Feature flags are a release tool, not a settings page
A flag older than a quarter is a bug with good manners.
v1.1
On-call is a design problem
If the same alert wakes two people in a month, the rota is not what needs fixing.