Backend Latency: Shrink p99 or Lose Users
Averages lie. Your backend's p99 latency tells the real story—and it's probably worse than you think. Here's the data-driven playbook to fix it.
⚡ Key Takeaways
- Ditch averages—track p95/p99 latencies to expose real bottlenecks.
- Profile with cProfile and APM: DB queries cause 80% of pain.
- Observe-profile-fix-verify loop: Compress tail latencies or churn spikes.
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Originally reported by dev.to
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