Why Your SSR Cache Is Stale After Six Seconds

Server-side rendering should make your app faster, not slower. But if you're caching rendered pages for even a few seconds, you might be shipping stale content to users — and Google knows it. In this episode, Lucas walks through a real case: a content-heavy e-commerce site where caching SSR output for 10 seconds caused a 12% drop in conversion as users saw outdated inventory. He explains the difference between render cache and data cache, why stale-while-revalidate isn't a silver bullet, and how one team cut their time-to-first-byte by 40% by shifting to incremental static regeneration with a smart invalidation key. Luna pushes back on complexity — isn't this just over-engineering? Lucas argues the cost of a cache miss is often lower than the cost of a cache hit with stale data. Specific, practical, and grounded in real metrics. #SSR #CacheStaleness #WebPerformance #ServerSideRendering #IncrementalStaticRegeneration #StaleWhileRevalidate #TTFB #FrontendPerformance #WebDev #NextJS #CDN #CacheInvalidation #EcommercePerformance #ConversionRate #WebVitals #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo