One hundred and sixty characters, none of them accented
One non-GSM character drops the limit from 160 to 70. Transliteration, a measured budget, and knowing what must never be truncated.
The flag that was written and never read
A Stripe webhook set is_active to False and nothing on the request path read it. The middleware that fixed it, and the four exemptions it needs.
Most account deletions are a mistake
A delay, two typed confirmations, counted losses, and a memory of what was published. The details that decide whether erasure destroys the right thing.
The third verdict — rules that check without deciding
Two verdicts force a system to call missing data a failure. The third one — to be checked — is what separates a decision aid from an automatic rejection.
A foreign key we deliberately did not create
Referencing by code instead of by FK buys real decoupling and costs a guarantee. An incident, its two faults, and why the second one was worse.
Sixteen operators, six actions, two implementations
Conditional form logic in the browser is presentation, not validation. Keeping show, enable and require independent — and the half that must exist twice.
A form that does not exist when Django starts
A form builder means the form does not exist at import time. Here is the dispatch, the degradation rule, and the N+1 that a dict literal hides.
Configuring django-tenants properly
Schema per tenant is the easy part. This is the configuration that decides whether your image builds, whether a Postgres blip takes the fleet down, and whether migrations run.