P99 Blog

Read articles on low-latency engineering and P99 CONF

Building an HTTP Server on a Thread-per-Core Framework, without Async/Await

How to build a production-grade HTTP server without async/await or coroutines

Why Queues Don’t Fix Overload (And What To Do Instead)

This post is about the physical laws of backpressure in software systems, latency death spirals, and why unbounded queues are a bug.

Latency Book Excerpt: Cache Replacement Strategies

Choosing the right cache replacement policy is critical for maintaining a high cache hit ratio and, therefore, low-latency access, but the decision can be workload-specific

Latency Book Excerpt: Cache Coherency and Cache Hit Ratio

Maximizing the hit ratio of your cache is the key to low-latency access.

Obsessed with Low Latency? Be Part of P99 CONF 2026

Obsessed with high performance and low latency engineering? Discuss your experiments, optimizations, ideas, and lessons learned with ~30K like-minded engineers… at P99 CONF 2026!