performance-optimizer
Identifies and fixes performance bottlenecks in code, databases, and APIs. Measures before and after to prove improvements.
Profile →npx skills add sickn33/agentic-awesome-skills --skill performance-optimizer --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Performance Optimizer Find and fix performance bottlenecks. Measure, optimize, verify. Make it fast. ## When to Use This Skill - App is slow or laggy - User complains about performance - Page load times are high - API responses are slow - Database queries take too long - User mentions "slow", "lag", "performance", or "optimize" ## The Optimization Process ### 1. Measure First Never optimize without measuring: ```javascript // Measure execution time console.time('operation'); await slowOperation(); console.timeEnd('operation'); // operation: 2341ms ``` **What to measure:** - Page load time - API response time - Database query time - Function execution time - Memory usage - Network requests ### 2. Find the Bottleneck Use profiling tools to find the slow parts: **Browser:** ``` DevTools → Performance tab → Record → Stop Look for long tasks (red bars) ``` **Node.js:** ```bash node --prof app.js node --prof-process isolate-*.log > profile.txt ``` **Database:** ```sql EXPLAIN ANALYZE SELECT * FROM users WHERE email = 'test@example.com'; ``` ### 3. Optimize Fix the slowest thing first (biggest impact). ## Common Optimizations ### Database Queries **Problem: N+1 Queries** ```javascript /
- When to Use This Skill
- The Optimization Process
- 1. Measure First
- 2. Find the Bottleneck
- 3. Optimize
- Common Optimizations
- Database Queries
- API Performance
- Frontend Performance
- Algorithm Optimization
- Memory Optimization
- Measuring Impact
- Performance Budgets
- Tools
node --prof app.js node --prof-process isolate-*.log > profile.txt
What does the performance-optimizer skill do?
Identifies and fixes performance bottlenecks in code, databases, and APIs. Measures before and after to prove improvements.
How do I install it?
Run `npx skills add sickn33/agentic-awesome-skills --skill performance-optimizer --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From sickn33/agentic-awesome-skills, a repository with 44,414 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.