This is a sample case study showing the format. Replace it with a real project (or mark it as NDA).
Problem
A store with ~6k products loaded category pages in 4–6 seconds on phones. Mobile was 78% of visits and cart abandonment was rising month over month. Stock levels were exported manually from the wholesaler once a day.
Diagnosis
- 38 active plugins, 9 of them loading scripts on every page.
- No object cache — each category view triggered 400+ SQL queries.
- Full-resolution product images, no AVIF/WebP.
- A 4-step checkout with server-side validation on every field.
Decisions
- Stay on WooCommerce — a headless migration wasn’t justified at this scale.
- Redis object cache + CDN page cache with smart invalidation.
- Removed and replaced 11 plugins with lean custom code.
- Wholesaler integration through a queue: stock sync every 15 minutes with retries.
Outcome
- Mobile LCP: 4.8 s → 0.9 s.
- Conversion: +23% in the first 8 weeks.
- Zero manual exports — stock matches the wholesaler in near real time.