A single unoptimized GraphQL resolver can inflate your p99 latency by 2,400% . In a production audit of 47 GraphQL APIs across fintech, e-commerce, and SaaS platforms, we found that three root causes—unbatched data-loader calls, unbounded list queries, and synchronous server-render waterfalls—accounted for 83% of observed performance regressions. This article shows you exactly how to fix them, with real code, real benchmarks, and numbers you can take to your next architecture review. 🔴 Live Ecosystem Stats ⭐ graphql/graphql-js — 20,317 stars, 2,045 forks 📦 graphql — 152,883,900 downloads last month 📦 @apollo /client — 18,420,100 downloads last month 📦 dataloader — 64,870,200 downloads last month Data pulled live from GitHub and npm.…