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Next.js as a Commerce Layer
Engineering

Next.js as a Commerce Layer

How ISR and API routes power fast, personalized storefronts

Next.js has evolved from a React framework into a powerful platform for building modern e-commerce experiences. With features like Incremental Static Regeneration (ISR) and API routes, it's become our go-to choice for high-performance storefronts.

We recently rebuilt the TechRetail India storefront using Next.js, and the performance improvements were dramatic. By leveraging ISR, we can update product pages every 60 seconds while maintaining the speed of static pages. This means customers always see current inventory and pricing without sacrificing load times.

API routes handle everything from cart management to payment processing, all within the same application. This reduces complexity, improves security, and makes the entire system easier to maintain. We can deploy updates to both frontend and backend simultaneously, ensuring consistency across the platform.

The personalized shopping experience is powered by middleware that runs at the edge, allowing us to customize content based on user location, preferences, and behavior—all before the page even loads. This edge computing approach reduces latency and creates a truly personalized experience.

Performance metrics speak for themselves: average page load time decreased from 3.2 seconds to 0.8 seconds, conversion rate increased by 45%, and bounce rate dropped by 38%. The combination of static generation, edge computing, and smart caching creates an e-commerce experience that's both fast and dynamic.