RFC 4287 - The Atom Syndication Format
This document specifies Atom, an XML-based Web content and metadata syndication format. [STANDARDS-TRACK]| IETF Datatracker
This document specifies Atom, an XML-based Web content and metadata syndication format. [STANDARDS-TRACK]| IETF Datatracker
HTTP has a concept of conditional requests, where the result, and even the success of a request, can be controlled by comparing the affected resources with a validator. These requests are useful for validating cached content, ensuring that it is only fetched if it differs from the copy that is already available to the browser. Conditional requests are also useful for ensuring the integrity of a document when resuming a download, or preventing lost updates when uploading or modifying a documen...| MDN Web Docs
The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) informs browsers that the site should only be accessed using HTTPS, and that any future attempts to access it using HTTP should automatically be upgraded to HTTPS.| MDN Web Docs
This is the W3C Feed Validation Service, a free service that checks the syntax | validator.w3.org
HTTP provides a general framework for access control and authentication. This page is an introduction to the HTTP framework for authentication, and shows how to restrict access to your server using the HTTP "Basic" scheme.| MDN Web Docs
WebSub provides a common mechanism for communication between publishers of any kind of Web content and their subscribers, based on HTTP web hooks. Subscription requests are relayed through hubs, which validate and verify the request. Hubs then distribute new and updated content to subscribers when it becomes available. WebSub was previously known as PubSubHubbub.| www.w3.org
