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What is the difference between public cache and private cache?

What is the difference between public cache and private cache?

Public cache is cache that can be accessed by everyone. A single copy of a publicly-cached page is stored and served to everyone who requests it. Private cache is only accessible to an individual visitor. [7]

In this regard, What does private cache-control mean? It's not specified. For me, a more concrete example of Cache-Control: private is that proxy servers (which typically have many users) won't cache it. It is meant for the end user, and no one else. FYI, the RFC makes clear that this does not provide security. [5]

Accordingly, Why add cache-control to a proxy server? If it's a corporate proxy, then all 67,198 users hitting the same page in the same 15-second window will all get the same contents - all served from close cache. Performance win for everyone. The virtue of adding Cache-Control: max-age is that the browser doesn't even have to perform a "conditional" request. [5]

Furthermore, What is a user and a cache user? A user is a account which has its own home directory in which the cache resides. Those profiles which are owned by the same user may share their cache. As you have found. But two profiles on the same computer if owned by different users must not share their cache, unless that cache is treated as a shared cache. [5]

Subsequently, How long should I let the User Cache the homepage? But I'm perfectly willing to let the user cache the homepage for 15 seconds: If the user hammers F5, they'll keep getting the cached version for 15 seconds. If it's a corporate proxy, then all 67,198 users hitting the same page in the same 15-second window will all get the same contents - all served from close cache. [5]

What does private cache-control mean?

What does private cache-control mean?

In this regard, Can a response with a ‘private’ directive be cached? A response with a ‘private’ directive can only be cached by the client and never by an intermediary agent, such as a CDN or a proxy. These are often resources containing private data, such as a website displaying a user’s personal information. [0]

Accordingly, What is an example of private cache-control? For me, a more concrete example of Cache-Control: private is that proxy servers (which typically have many users) won't cache it. It is meant for the end user, and no one else. FYI, the RFC makes clear that this does not provide security. It is about showing the correct content, not securing content. [5]

Additionally, What is a cache-control header? Cache-control is an HTTP header used to specify browser caching policies in both client requests and server responses. Policies include how a resource is cached, where it’s cached and its maximum age before expiring (i.e., time to live). [2]

Also asked, 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]

Why add cache-control to a proxy server?

Why add cache-control to a proxy server?

One may also ask, What are the benefits of delivering content from CDN cache proxies? Delivering content from CDN cache proxies removes the burden from the origin (backend) server, significantly reducing bandwidth costs associated with serving content to numerous visitors. For most sites, bandwidth costs can be reduced by as much as 40% to 80%, depending on the percentage of cacheable content. 2. Improve user experience [2]

One may also ask, What is the use of a caching proxy? Caching enables the caching proxy server to satisfy subsequent requests for the same content by delivering it directly from the local cache, which is much quicker than retrieving it again from the content host. Our caching proxy server was configured to use memory. [0]

Besides, What is private 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). [2]

Furthermore, 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 is a user and a cache user?

What is a user and a cache user?

Accordingly, What is a CPU cache? The CPU, or central processing unit — the core component responsible for processing information from the software in your desktop computer , laptop, smartphone, or tablet — has its own cache. A CPU cache is a small block of memory that's designed to help the CPU easily retrieve frequently used information. [4]

Correspondingly, What is browser and memory caching? Browser and memory caching: Memory caches store data locally on the computer that an application or browser runs on. When the browser is active, the resources it retrieves are stored in its random access memory (RAM) or its hard drive. [7]

Also, Why is it important to clear your cache? If you're using a public device, like a computer in a library, your cache could be the gateway to an attack. Some users simply never clear their cached data. But since these risks are real, it's worthwhile to add cleanup to your regular maintenance tasks. [7]

Furthermore, What is cache data and how does it work? Cached data works by storing data for re-access in a device’s memory. The data is stored high up in a computer’s memory just below the central processing unit (CPU). It is stored in a few layers, with the primary cache level built into a device’s microprocessor chip, then two more secondary levels that feed the primary level. [7]

How long should I let the User Cache the homepage?

How long should I let the User Cache the homepage?

Beside this, Do I need to cache my website? You should also have your HTML documents cached as well. Basically, anything that requires a lot of work to support on the server (because the files are heavy) or to process (because they run cumbersome processes) should be cached. [0]

Simply so, How does the cachedtime () function work? The code first reads the CachedTime cache entry. If a value is returned (that is, if the cache entry isn't null), the code just sets the value of the time variable to the cache data. However, if the cache entry doesn't exist (that is, it's null), the code sets the time value, adds it to the cache, and sets an expiration value to one minute. [8]

Also to know is, How do I set the expiration time of a webcache entry? After one minute, the cache entry is discarded. (The default expiration value for an item in the cache is 20 minutes.) The command WebCache.Set (cacheItemKey, time, 1, false) shows how to add the current time value to the cache and set its expiration to 1 minute. [8]

Furthermore, How long should I cache a page? If you are doing special caching of authenticated pages then read more about caching. A general tip: the less a resource changes (images, pdfs, etc.) the longer you should cache it. If it never changes (every version has a different URL) then cache it for as long as you can (i.e. a year)! [7]

References

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