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#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdev #imagecompression #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#webdeveloper #corewebvitals #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

HTTP caching is a mechanism that helps improve website performance and reduce server load by storing copies of resources, like images, CSS, and JavaScript, closer to the user. When a browser requests a resource, it can be fetched from the cache instead of the server if certain conditions are met. The server uses headers like Cache-Control to define caching behavior. This header specifies directives such as max-age, which indicates how long a resource can be cached, or no-cache, which forces revalidation with the server.

Another important header is ETag, a unique identifier for a resource version. When a cached resource’s ETag matches the server’s, it avoids downloading the resource again, using a 304 Not Modified response instead. Similarly, the Last-Modified header indicates when a resource was last updated, allowing the browser to check if it’s still current. Caches exist at multiple levels, including the browser, proxy servers, and content delivery networks (CDNs).

Effective caching improves load times and reduces bandwidth usage. Developers should understand how to balance freshness and performance by setting appropriate caching headers. For instance, static resources can have long max-age values, while dynamic content may need stricter controls. Properly implemented caching enhances user experience and scalability for web applications.

#webdeveloper #httpcache #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago

#react #reactjs #reactdeveloper #frontendinterview #frontenddeveloper #frontenddev #frontendchallenge #frontenddevtips by @web.dev.expert

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2 years ago