Debug a Performance Problem

Fill these in and the prompt below updates as you type. Anything you leave blank stays as a placeholder.

My {{stack}} application is slow. Here's what I know:

What's slow: {{slow_operation}}
How slow: {{current_latency}}
Expected: {{target_latency}}
Scale: {{scale}}

Relevant code:
{{code}}

Analyze: what's the time complexity of this code? Where are the likely bottlenecks (N+1 queries, unnecessary loops, blocking calls, memory allocation)?

Suggest fixes ranked by impact: highest-impact/lowest-effort first. For each fix, estimate the expected improvement and explain why.