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What happens to the cached version of a response?

What happens to the cached version of a response?

After the browser caches the response, the cached version is used until it's no longer fresh, as determined by , or until it is evicted from the cache for some other reason—for example, the user clearing their browser cache. [4]

Consequently, What is a private response in HTTP cache? The private response directive indicates that a resource is user specific—it can still be cached, but only on a client device. For example, a web page response marked as private can be cached by a desktop browser, but not a content delivery network (CDN). In addition to cache-control, notable HTTP cache headers include: [2]

Also, How does an HTTP server know what to cache? Good question. As defined in the HTTP spec, each request and response can have headers associated with it, and it’s through these headers that the server can tell the client what to cache and for how long. There are two modern HTTP response headers that define how a resource should be cached: Cache-Control and ETag. [1]

Also asked, Is the response stored in the Cache-Control header? In this situation, the response isn’t stored. You must configure both the Cache-Control header and the cache to be able to store and search for the response in the cache. [3]

Similarly, people ask, What are the HTTP response headers that control caching behavior? There are two main HTTP response headers that we can use to control caching behavior: The Expires HTTP header specifies an absolute expiry time for a cached representation. Beyond that time, a cached representation is considered stale and must be re-validated with the origin server. [8]

What is a private response in HTTP cache?

What is a private response in HTTP cache?

Subsequently, What happens to the cached version of a response? After the browser caches the response, the cached version is used until it's no longer fresh, as determined by , or until it is evicted from the cache for some other reason—for example, the user clearing their browser cache. [4]

Simply so, What is the difference between a private and shared cache? On the other hand, "private" indicates that the response is intended for a single user only and must not be stored by a shared cache. A private browser cache may store the response in this case. [5]

Then, What is the difference between public and private HTTP response types? The "public" directive indicates that the response may be cached by any cache. This can be useful if pages with HTTP authentication or response status codes that aren't normally cacheable should now be cached. On the other hand, "private" indicates that the response is intended for a single user only and must not be stored by a shared cache. [5]

What is a private response in Cache Control? Cache-Control: Private The private response directive indicates that a resource is user specific—it can still be cached, but only on a client device. For example, a web page response marked as private can be cached by a desktop browser, but not a content delivery network (CDN). Additional HTTP Cache Headers [2]

How does an HTTP server know what to cache?

How does an HTTP server know what to cache?

Then, How does the server decide how to cache a response? The server can return a Cache-Control directive to specify how, and for how long, the browser and other intermediate caches should cache the individual response. ETag. When the browser finds an expired cached response, it can send a small token (usually a hash of the file's contents) to the server to check if the file has changed. [4]

How does the HTTP cache work? The HTTP Cache's behavior is controlled by a combination of request headers and response headers. In an ideal scenario, you'll have control over both the code for your web application (which will determine the request headers) and your web server's configuration (which will determine the response headers). [4]

Keeping this in consideration, How does a caching server work? As discussed above, caching servers will by default match future requests only to requests with exactly the same headers and header values. That means a request will be made to the origin and a new cache will be created for every slight variant that may be specified by different user-agents. [5]

Beside this, What is an example of a cache request? For example: The following cache request directives can be used by the client in its HTTP request: A cache must not use the response to satisfy a subsequent request without successful revalidation with the origin server. The cache should not store anything about the client request or server response. [2]

Is the response stored in the Cache-Control header?

Is the response stored in the Cache-Control header?

Additionally, How to prevent a response from being stored in a cache? The response may be stored by any cache, even if the response is normally non-cacheable. The response may be stored only by a browser's cache, even if the response is normally non-cacheable. If you mean to not store the response in any cache, use no-store instead. This directive is not effective in preventing caches from storing your response. [0]

Similarly, people ask, What is Cache-Control and how does it work? What is Cache-Control? Cache-Control is an HTTP cache header comprised of a set of directives that allow you define when / how a response should be cached and for how long. HTTP caching occurs when a browser stores copies of resources for faster access. [1]

Just so, What is a private response in Cache Control? Cache-Control: Private The private response directive indicates that a resource is user specific—it can still be cached, but only on a client device. For example, a web page response marked as private can be cached by a desktop browser, but not a content delivery network (CDN). Additional HTTP Cache Headers [2]

Herein, What is HTTP Cache Control header? Cache-Control. The Cache-Control HTTP header holds directives (instructions) for caching in both requests and responses. A given directive in a request does not mean the same directive should be in the response. Header type. [0]

What are the HTTP response headers that control caching behavior?

What are the HTTP response headers that control caching behavior?

Likewise, What is the cache-control general-header field used for? The Cache-Control general-header field is used to specify directives for caching mechanisms in both, requests and responses. Caching directives are unidirectional, meaning that a given directive in a request is not implying that the same directive is to be given in the response. [0]

Also question is, What are HTTP headers and how do they work? By using HTTP headers, an origin server indicates whether a response can be cached and, if so, by whom, and for how long. Caches along the response path can take a copy of a response, but only if the caching metadata allows them to do so. [8]

Beside this, How do I define a caching policy in http? Cache-Control Every resource can define its own caching policy via the Cache-Control HTTP header. Cache-Control directives control who caches the response, under what conditions and for how long. [1]

Similarly, people ask, What is the purpose of the cache-control HTTP header? The Cache-Control HTTP/1.1 general-header field is used to specify directives for caching mechanisms in both requests and responses. Use this header to define your caching policies with the variety of directives it provides. The cache should not store anything about the client request or server response. [5]

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