Liangxu Linux

May 24, 2025 · Backend Development

Mastering Strong and Conditional Caching with Nginx: A Practical Guide

This article explains the concepts, response headers, Nginx configuration examples, behavior, and suitable scenarios for both strong (expires‑based) and conditional (ETag/Last‑Modified) caching, compares their differences, and offers best‑practice tips and debugging tools to boost web performance.