performance-debuglisted

# Performance Debugging Skill This skill focuses on identifying, analyzing, and resolving performance-related issues such as slow response times, CPU spikes, and UI lag. ## When to use this skill - When the application is responding slower than SLAs allow. - When CPU usage is unexpectedly high. - When identifying database query bottlenecks (N+1 queries, missing indexes). ## Guidelines - **Measure First:** Do not guess. Use profilers, APMs (Datadog, New Relic), and logging to find the bottleneck. - **Isolate the Scope:** Determine if the issue is in the frontend, network, backend, or database layer. - **Algorithmic Complexity:** Check for accidental O(n^2) or worse loops. - **Caching:** Consider if a caching layer (Redis, Memcached) can bypass the heavy computation.