For e-commerce and online retail, revenue and web performance are inextricably linked. Delays, latency and downtime reduce conversions: Google estimates that every second of extra page load time over two seconds reduces conversions by 7%. It’s why many major brands rely on Varnish software to power their online grocery, clothing and cosmetics stores.
GraphQL is a query language and server-side runtime for APIs, designed to give clients the specific data they need and make it easier to aggregate data from multiple sources. It aims to make APIs fast and flexible, and so is a common feature in the web stack of high traffic websites and e-commerce platforms. In these environments it’s often used to do things like fetch real-time price information and stock levels.