SPA vs Server-Side Rendering

Single Page Application (Client-Side-Rendering)

Pro

  • Faster subsequent load because all assets are downloaded. Only part of the web got re-render.

Cons

  • Slower initial page load as you need to download many files including JS.

Server-Side-Rendering

Pro

  • Better SEO performance as website get rendered almost immediately versus SPA that get rendered later. So it is easier to index.

  • Faster initial page load

  • If demographic is wide that includes high and low gadget, SSR is better.

Cons

  • Lower subsequent load because of full page reload

  • Many requests to server

Use Cases:

SaaS company: Website (Price, Registration) use SSR to make use of the SEO optimization and WebApp (Dashboard, etc) use SPA for better user experience.

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