PerformanceGuide
Website Crashes During Traffic Spike? What to Do First
Why a site goes down when traffic jumps, what to do in the first hour, and how to prepare before your next sale or launch.
Oct 8, 2026 · 8 min read
Blog
App, API & Database Performance Guides
Slow apps, APIs and databases, and how to fix them.
Slow software costs money in ways that are easy to miss: customers who leave before a page loads, staff waiting on screens, and cloud bills that grow faster than the business. Most of the time the cause is a handful of fixable problems, not a need for a rewrite or bigger servers.
These guides explain what usually goes wrong, how to tell which problem you have, and what fixing it involves. Some include technical detail your developers can act on directly.
New to this? Start here
All performance articles
PerformanceGuide
Postgres High CPU Usage: Find and Fix the Queries Behind It
Postgres pinned at 100% CPU? A vendor-neutral playbook to find the queries burning CPU with pg_stat_statements and fix them, including RDS and Aurora.
Sep 25, 2026 · 7 min read
PerformanceGuide
PgBouncer Best Practices for 2026: Pooling, Sizing and Pitfalls
PgBouncer best practices for 2026: transaction mode with prepared statements, pool sizing math, safe timeouts, and when to pick Pgpool-II or RDS Proxy instead.
Sep 25, 2026 · 7 min read
PerformanceGuide
The N+1 Query Problem: What It Is and How to Fix It
What the N+1 query problem is, how to spot it in production, and exact fixes for Django 6.1, Rails, Hibernate 7.4, Prisma and GraphQL DataLoader.
Sep 25, 2026 · 6 min read
PerformanceExample scenario
Why Is My API Slow Under Load? A Debugging Walkthrough
An API that is fast at 10 req/s and falls over at 200. An example scenario walking through the real causes: pool exhaustion, N+1s, locks and missing timeouts.
Sep 25, 2026 · 7 min read