5 основных элементов для дизайн выставочных стендов Мадрид цена
5 основных элементов для дизайн выставочных стендов Мадрид цена
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Режиссер: Элис Дэллоу, Лорен Грэй Уильямс, Табита Лентл
When a user reloads the browser, the browser will send conditional requests for validating to the origin server. But it's not necessary to revalidate those kinds of static resources even when a user reloads the browser, because they're never modified.
If you want caches to always check for content updates while reusing stored content, no-cache is the directive to use. It does this by requiring caches to revalidate each request with the origin server.
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The no-cache directive is sent by the server to direct caches to first validate responses from the origin server before sending them.
The Cache-Control header is used to hold various cache-related instructions that can apply to HTTP requests, HTTP responses, or both. A variety of use cases can be covered using appropriate combinations of directives.
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After the HTTP response is stale, as long as it is within the specified number of seconds that the server is responding with one of these 5XX error codes, the HTTP response can be reused.
A modern best practice for static resources is to include version/hashes in their URLs, while never modifying the resources — but instead, when necessary, updating
The max-age=N request экологичные выставочные стенды ИФЕМА directive indicates that the client allows a stored response that is generated on the origin server within N
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If you don't add a Cache-Control header because the response is not intended to be cached, that could cause an unexpected result.
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