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Learn about the benefits of caching and the 'stale while revalidate' technique. Understand where caches live, limiting API hits, and when to use 'stale while revalidate'. This episode also explores the concept of caching in different use cases and warns against universal application.
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Quick takeaways
- Stale While Revalidate is a caching technique that improves web development speed by serving up a stale version of an asset while a fresh version is regenerated in the background.
- Using Max Age and S Max Age caching headers can optimize performance by reducing the need for repetitive data fetching and caching assets at both the browser and CDN level, resulting in faster access for users.
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Stale While Revalidate: A Caching Technique to Improve Speed
Stale While Revalidate is a caching technique that can significantly improve overall speed in web development projects. It involves setting specific headers to control caching behavior. One use case is caching an HTML page to avoid repetitive server-side rendering and database queries. Another example is caching open graph images, which take time to generate. Stale While Revalidate allows serving up a stale version of the asset for a certain period, while a background task regenerates a fresh version. This technique ensures faster loading times without making users wait for slow operations.
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