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What is SSR (Server Side Rendering)?

What is SSR (Server Side Rendering)? Where and when is it used? What is it needed for?

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This content has been automatically translated from Ukrainian.
SSR, or Server Side Rendering, is a technique used to generate HTML content on the server and send pre-built pages to clients. The main goal of SSR is to reduce page load time and improve search engine optimization (SEO).

Why should you use SSR?

Answer: SSR helps reduce the load time of the first page, which improves user experience and boosts SEO metrics.

How does SSR work?

When using SSR, the request to the server includes not only JavaScript code but also the already generated page, allowing clients to receive all the ready content immediately.

What advantages does SSR have compared to Client Side Rendering (CSR)?

SSR provides fast content rendering, especially on the first loads of pages, which makes the user experience better and contributes to improving the page ranking in search engines. But CSR also has its advantages.

Example of operation:

When rendering using SSR, the user opens the page, and the server generates the HTML content and sends it. For example, if the website has a blog, when opening the main page, the user will immediately see a list of articles, rather than waiting for JavaScript to load and execute all the logic (DOM rendering, loading additional content, etc.).

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