![]() ![]() ![]() Internet Standards is available in Section 2 of RFC 5741. Internet Engineering Steering Group (IESG). Received public review and has been approved for publication by the It represents the consensus of the IETF community. This document is a product of the Internet Engineering Task Force This is an Internet Standards Track document. This document defines HTTP caches and the associated headerįields that control cache behavior or indicate cacheable response Level protocol for distributed, collaborative, hypertext information The Hypertext Transfer Protocol (HTTP) is a stateless application. Hypertext Transfer Protocol (HTTP/1.1): Caching Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.RFC 7234: Hypertext Transfer Protocol (HTTP/1.1): Caching Įrrata Exist Internet Engineering Task Force (IETF) R. Output from this page is sent to the client once it is completely processed by the server, so we can set CacheControl anytime.Ĭlient: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0. ![]() INFORMATION UNLESS YOU SEE HTTPS:// IN THE ADDRESS BAR OF YOUR WEB BROWSER,ĪS THIS INDICATES A SECURE SOCKETS LAYER (SSL) CONNECTION. Output from this page is sent to the client as it is being processed. Applies ToĬacheControl comes before the tag to ensure that it is set before content is sent to the client. asp files, but it is discouraged if you generate custom HTML for every request, and a proxy server might interfere with the response. Setting CacheControl to "Public" may seem to improve the performance of your. If there is no cache mechanism between your Web server and a client computer, or if a proxy server is running HTTP/1.0, CacheControl will be ignored. For more information, see the Hypertext Transfer Protocol, HTTP/1.1 specification of section 14.9 on the World Wide Web Consortium Web site. You can override this default value, setting it to any value supported by the HTTP/1.1 protocol. For this reason, IIS sets this property to "Private" so that proxy servers or other cache mechanisms will not cache pages. Usually ASP pages are developed to be unique for each user or may contain secure information. This is not an infallible security measure.īetween your Web server and a user requesting your page, there may be proxy servers configured to cache Web pages for faster response times. The storage inferred here is nonvolatile storage, such as tape backups. The response and the request that created it must not be stored on any cache, whether shared or private. The cached page can be sent to any user.ĭo not cache this page, even if for use by the same client. Shared caches, such as proxy servers, will cache pages with this setting. ![]() Most proxy servers will not cache pages with this setting. For more complete descriptions, see the Hypertext Transfer Protocol, HTTP/1.1 specification of section 14.9 on the World Wide Web Consortium Web site.Ī cache mechanism may cache this page in a private cache and resend it only to a single client. The following is a partial list of values supported by the HTTP/1.1 Protocol. You must set CacheControl before any response is sent to the client, unless response buffering is enabled. The values for CacheControl are strings, and must be enclosed in quotation marks (" "). The CacheControl property enables you to set the HTTP/1.1 Cache Control header in Response.Syntax. ![]()
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