No page caching enabled

Problem Summary

Without page caching, every page request triggers PHP processing and database queries. Caching stores generated HTML to serve directly, dramatically reducing server load and response time.

Performance Impact

Slow TTFB: Server generates page for each request
High server load: PHP and database run constantly
Poor scalability: More visitors = slower site
Database overload: Repeated identical queries

How to Detect

PageSpeed Insights: Flags slow server response
TTFB tests: Check time to first byte
Query Monitor: Shows query count per request
Server metrics: High CPU under load

Solutions

1. Use a Caching Plugin

WP Rocket, W3 Total Cache, or WP Super Cache.

2. Server-Level Caching

Code

# Nginx fastcgi_cachefastcgi_cache_path /var/cache/nginx levels=1:2 keys_zone=WORDPRESS:100m inactive=60m;fastcgi_cache WORDPRESS;

3. CDN Caching

Configure Cloudflare or similar to cache HTML.

4. Object Caching

Redis or Memcached for database queries.

5. Cache Permalinks

Ensure pretty permalinks are active for caching.