WordPress performance issues can sometimes stem from unexpected sources—not just heavy plugins or large pages, but also misconfigured or disabled caching layers.
In this case study, we’ll walk through how a site experiencing slow performance—especially on event-related pages—was quickly optimized by restoring and validating edge caching.
Issue Background
A WordPress site began experiencing slow load times, particularly on event-related pages, but also across the site more broadly.
- GTmetrix score in the B range
- Sluggish real-world performance
- Presence of third-party embeds like Zoho forms
There was also concern that event RSVP functionality might conflict with caching mechanisms.
Diagnosis
1. Edge caching was disabled
- Edge caching at the hosting level (WP Cloud) was turned off
- Requests were processed fully by the origin server
2. Outdated cache management plugin
- The caching plugin was outdated and not fully optimized
3. Previous troubleshooting impacted setup
- Edge cache had been disabled during earlier debugging of RSVP functionality
4. Potential dynamic content conflicts
- admin-ajax.php and event-related endpoints required proper cache bypassing
Resolution Steps
Step 1: Re-enable edge caching
- Enabled edge caching at the hosting level
Step 2: Update caching plugin
- Updated the cache management plugin to the latest version
Step 3: Test dynamic functionality
- Validated event pages and RSVP flows
- Ensured AJAX requests bypass cache
Step 4: Analyze network behavior
- Captured HAR files for logged-in and logged-out sessions
- Confirmed dynamic requests returned valid responses
Step 5: Confirm cache exclusions
- Verified that critical endpoints were excluded from caching
Final Outcome
- GTmetrix score improved to an A grade
- Faster load times across the site
- Improved real-world performance
- No breakage in RSVP or dynamic functionality
If you’re dealing with WordPress performance issues or caching conflicts, our team can help optimize your setup for speed and stability.
