At Red Jet, we love seeing real-world performance gains for our customers. In this case study, we’ll walk you through how we used Redis object caching to reduce load times by 60% on a WooCommerce site struggling under heavy traffic and dynamic content.
🛒 The Challenge: A Slow, Growing WooCommerce Store
Our client, a New Zealand-based online retailer, had a growing WooCommerce store with:
- 2,000+ products
- Logged-in users during most interactions
- Abandoned cart recovery scripts
- Sales campaigns generating traffic spikes
Even with a good hosting setup and a page caching plugin, the site felt slow during peak times – especially for logged-in customers viewing carts and accounts.
🧪 The Diagnosis
We ran a full performance audit and noticed:
- TTFB (Time to First Byte) was consistently over 1.3 seconds
- Database query load was spiking during sales
- WooCommerce pages were uncacheable via full-page caching (because of cart/session data)
Page caching wasn’t enough – we needed a deeper solution.
💡 The Solution: Redis Object Caching
We enabled Redis object caching on their hosting plan. Here’s what we changed:
- Installed the Redis Object Cache plugin
- Enabled persistent object caching at the server level
- Tuned Redis memory limits based on traffic and data size
- Cleared and monitored cache usage post-deployment
Redis began storing repeated database query results (e.g. product price calculations, user session info) in memory – dramatically reducing database hits.
🚀 The Result
After Redis was implemented:
| Metric | Before Redis | After Redis |
|---|---|---|
| Time to First Byte (TTFB) | 1.3s | 520ms |
| Page Load Time | 3.2s | 1.3s |
| Logged-In Checkout Time | ~5s | ~2.1s |
| Backend Dashboard Speed | Slow | Noticeably faster |
That’s a 60% reduction in load times across key user journeys – just by optimising how data is served.
🧰 Key Takeaways
- Redis doesn’t replace full page caching – it complements it for dynamic content.
- It’s especially powerful for WooCommerce, LMS, or membership sites.
- Our Redis implementation is fully managed – no technical work required on your end.
Want to See What Redis Can Do for Your Site?
If your WordPress site feels sluggish – especially with logged-in users or ecommerce functions – Redis might be the upgrade you didn’t know you needed.
👉 Compare our hosting plans – Redis is included with all of them.
