Performance Optimization
Core web vitals, database query work, profiling, and the discipline of staying fast as the product grows.
35 posts · page 2 of 2
- Performance Optimization
API Response Times: How to Track What Matters
Average response time is the worst metric in distributed systems. The numbers that matter are percentiles, and the cuts that matter are by endpoint and by customer. Here is the discipline that works.
11 min read
- Performance Optimization
The Three Hour Performance Audit Every Team Should Run Quarterly
A quarterly performance audit does not require a dedicated week or a specialist. Three hours, the right sequence of checks, and a shared document is enough to catch most regressions before they reach customers.
12 min read
- Performance Optimization
The Performance Regression That Hides in CI
CI catches broken tests, not slower tests. The performance regression that ships quietly is the one your pipeline has no budget check for. Here is the discipline that catches it before production.
12 min read
- Performance Optimization
Why Memoization Is a Trap When Misused
Memoization looks like free performance. It is not. It moves cost around, hides bugs, and produces a class of regression that nobody catches in review. Here is when to reach for it and when it makes everything worse.
12 min read
- Performance Optimization
The Hot Path: Finding and Optimizing It
How to identify the code that runs on every request and the specific optimizations that reduce its cost -- profiling, measurement, and the highest-return changes.
12 min read
- Performance Optimization
The Slow Query Log: A Discipline Every SaaS Team Should Practice
Most SaaS teams discover slow queries when a customer complains. The slow query log is the discipline that finds them first. Here is how to enable it, read it, and act on what it tells you.
12 min read
- Performance Optimization
The Garbage Collection Tax: A Backend Story
How garbage collection pressure creates latency spikes in Node.js and JVM services -- and the profiling and architectural changes that reduce the tax.
12 min read
- Performance Optimization
The HTTP Caching Strategy That Most Teams Get Wrong
The specific HTTP caching headers that control browser and CDN caching -- why most teams misconfigure them and the performance and correctness implications.
12 min read
- Performance Optimization
The Edge Rendering Bet: When It Pays Off
When edge rendering improves real user performance and when it adds complexity without meaningful benefit for your specific workload.
12 min read
- Performance Optimization
The Real Numbers Behind a Fast Web App in 2026
Fast is not a feeling. It is a set of specific numbers that your app either hits or does not. Here are the targets that matter in 2026, where most apps fall short, and what it actually takes to close the gap.
12 min read
- Performance Optimization
Why Your App Got Slower After You Added Users
The app was fast at a hundred users and slow at ten thousand. The code did not change. The data did. This is the technical story of where the time actually goes, and how to find it before your customers do.
12 min read
More than blog posts.
The Labs folder has the experiments themselves. The Systems folder has the stack and architecture. The Journey folder has the timeline. Pick whichever pulls you.