How to force update Single Page Application (SPA) pages?

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In fully server side based rendering (non Web 2.0), deploying server side code would directly update client side pages upon page reload. In contrast, in React based Single Page Application, even after React components were updated, there would be still some clients using old version of the components (they only get the new version upon browser reload, which should rarely happen) -> If the pages are fully SPA, it's possible that some clients only refresh the pages after a few hours.

What techniques should be employed to make sure the old components versions are not used anymore by any clients?

Update: the API doesn't changed, only React Component is updated with newer version.

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Answer

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You can have a React component make an ajax request to your server, when the application loads, to fetch "interface version". In the server API, you can maintain an incremental value for the client version. The React component can store this value on the client (cookie/local storage/etc). When it detects a change, it can invoke window.location.reload(true); which should force the browser to discard client cache and reload the SPA. Or better still, inform the end-user that a new version will be loaded and ask them if they wish to save the work and then reload etc. Depends on what you wanna do.

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source: stackoverflow.com
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