django-perf-review — Claude Code skill: Django performance review

What django-perf-review does

The skill reviews Django code and reports only performance issues it can prove. It starts by researching the codebase: tracing the data flow, checking for existing optimizations, verifying data volume. A pattern match is not validation, so an issue has to be confirmed before it lands in the report.

Findings are grouped by impact. N+1 queries and unbounded querysets sit at the top: they multiply as data grows and end in timeouts or workers killed for memory. Missing indexes and write loops come next, where a single statement turns into N. DRF serializers get the same treatment, because touching a related field inside a serializer produces the same N+1 when the queryset is not optimized.

Zero findings is an acceptable outcome, and the skill is told not to manufacture issues to look thorough. It runs with Read, Grep, Glob, Bash and Task allowed, since tracing a view down to a template or serializer and checking table size needs those tools.