Free Diagnostic Checklist
Your Web App Is Slow.
Find Out Why.
Frontend, backend, or database? Five triage questions and 29 checks to find the layer stealing your seconds. In one afternoon, no APM required.
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What's inside
Triage first, then layer by layer
Step 0: five triage questions
Always slow vs slow under load vs slow as data grew. Each answer routes you to the right layer.
Frontend checks
TTFB split, bundle weight, images, CDN, third-party scripts, Core Web Vitals.
Network layer
Payload sizes, compression, cache headers, chatty APIs, geographic latency.
Backend checks
Server resources, CPU credits, thread and connection pools, profiling, GC pauses.
Database checks
Slow query log, EXPLAIN, the index-on-every-column trap, column types, N+1, locks.
Third-party calls
Sequential calls that should be parallel, missing timeouts, calls inside loops.
Plus the 5 traps that make it worse - scaling up instead of diagnosing, caching over a broken query, trusting averages instead of p99, and more.
Who is this for?
Founders and CTOs whose users complain about speed
Teams where nobody has done systematic performance work before
Apps that got slower as customers and data grew
Anyone about to "just upgrade the instance" one more time
Stop guessing where the slowness lives
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