Monitoring Client-Side Routing Frameworks: SPA, CSR & Hybrid
Modern web applications have shifted their center of gravity. The page is no longer the system— the runtime is. Frameworks like React, Angular, Vue, Next.js, SvelteKit, Remix, and Nuxt treat HTML as a bootloader, and the real application emerges only after hydration, routing, data fetching, and continual re-rendering. What users experience depends entirely on JavaScript execution, not static markup. Teams usually discover this shift when the UI appears to load but nothing works.