The issues that make your app slow — found before they hit production
N+1 queries, missing indexes, inefficient joins, and query patterns that don't scale
Memory leaks, unbounded caches, resource exhaustion, and cleanup failures
O(n²) where O(n) is possible, unnecessary iterations, and computational waste
Patterns that work now but will break under load — before they become incidents
See how Performance Specialist catches and fixes common issues
// Fetches users, then queries posts for EACH user
const users = await db.users.findAll()
for (const user of users) {
user.posts = await db.posts.findByUserId(user.id)
}N+1 query pattern: 1 + N database calls
// Single query with JOIN
const users = await db.users.findAll({
include: [{ model: db.posts }]
})Use eager loading to fetch in single query
useEffect(() => {
const handler = () => updateState()
window.addEventListener('resize', handler)
// Missing cleanup!
}, [])Event listener never removed
useEffect(() => {
const handler = () => updateState()
window.addEventListener('resize', handler)
return () => window.removeEventListener('resize', handler)
}, [])Return cleanup function in useEffect
Unlike surface-level linters, Performance Specialist understands your code's behavior. It traces data flow, analyzes query patterns, and identifies issues that only appear under load.
Detects N+1, missing indexes, and inefficient queries
Evaluates algorithmic complexity and scaling behavior
Provides specific solutions that fit your codebase
Analyze Code Patterns
Identifies loops, queries, and resource handling
Trace Data Flow
Follows data through the codebase to find bottlenecks
Assess Complexity
Evaluates algorithmic complexity and scaling behavior
Provide Solutions
Suggests specific optimizations with code examples
Performance issues need focused attention to catch
Trained on thousands of performance anti-patterns across different languages and frameworks
Understands your data flow end-to-end — from database to API to frontend
Identifies issues that only appear under load — before they affect your users
Performance issues hide in plain sight.
Performance Specialist knows where to look.
Let Performance Specialist catch bottlenecks before they slow down your users. Free for 14 days, no credit card required.