“performance”

Measure before optimizing.

Performance profiling for Node.js, Python, and Go: CPU flamegraphs, memory leak detection, bundle analysis, query optimization, and k6 load testing.

Sweep a codebase for performance hazards on hot paths — N+1 data access, per-iteration allocation or IO in loops, unbounded reads, missing caching or…

Expert performance engineer specializing in modern observability, application optimization, and scalable system performance.

Android and Compose performance considerations for lists, recomposition, and main-thread work.

A CPU performance engineering brain: a vetted reading list, benchmarks and cited source passages

[OMX] Run an evaluator-gated performance optimization workflow over Codex goal mode with durable OMX artifacts and safe goal handoffs.

SwiftUI performance: render, scroll, CPU/memory, updates, layout, Instruments.

Set performance budgets before implementation.

Use this skill when you need k6 load/stress/spike/soak scope, scripts, or runnable entry points; triggers include k6、k6 性能测试 and k6 performance testing.

Use this skill when you need k6 load/stress/spike/soak scope, scripts, or runnable entry points; triggers include k6, k6 scripts, and k6 performance testing.

Profile and optimize application performance including load times, memory usage, and rendering.

Performance and resource-efficiency review of an open-source pull request or diff.

Audit the connected creator's Instagram performance, investigate strong and weak posts, and recommend experiments using the current server workflow.

Use when writing, reviewing, refactoring, or optimizing React and Next.js code for performance.

Audit code paths for performance bottlenecks — N+1 queries, redundant renders, blocking I/O, large bundle sizes — and produce a prioritized remediation report.

Analyze content performance across YouTube, TikTok, Instagram, and Twitter to identify what works.

Deferring non-essential work with requestIdleCallback.

Navigation hub linking sub-skills for proactive Qdrant tuning: search speed, indexing performance, and memory usage optimization.

Email campaign/sequence performance review composite.

Find real performance problems — hot loops, N+1 calls, needless I/O, memory bloat.

A high-throughput performance auditor that verifies zero-GC boundaries, memory slab invariants, and hot-path execution latencies.

Optimizes application performance across frontend, backend, queries, and databases.

Creates ad copy, Google Ads RSA headlines, A/B test plans, and campaign analysis for SME performance marketing.