PrettyLittleThing (PLT), a UK-based fashion retailer, migrated from Varnish Cache to Varnish Enterprise to improve site performance and handle higher traffic loads. By switching to Varnish Enterprise, PLT optimized their caching architecture, allowing for parallel ESI processing, better cache invalidation (Xkey), and improved hardware utilization. This migration resulted in significant performance gains, enabling servers to handle five times more traffic, reduce backend load, and achieve better uptime and stability. The enhanced caching solution led to faster content delivery, higher conversion rates, and greater efficiency for PLT's e-commerce platform.

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