The National Information Standards Organization (NISO) is pleased to announce the formal publication of an updated version of the ResourceSync Framework Specification (ANSI/NISO Z39.99-2017). Approved by the American National Standards Institute (ANSI), this 1.1 revision improves a web standard that details various capabilities that a server can implement to allow third-party systems to remain synchronized with evolving resources. Such synchronization is important in the current landscape where Web-based content-not only the metadata about the content-is constantly changing.
ResourceSync was first published as ANSI/NISO Z39.99 in 2014. The standard, also known as the ResourceSync "core" specification, offers a range of easy-to-implement capabilities that a server may support in order to enable remote systems to remain more tightly in step with its evolving resources. It also describes how a server should advertise the facilities it supports, and presents plentiful examples and use cases that offer guidance for implementation. The recent revisions to the standard, which is pull-based, reflect changes to fix problems related to the conflation of last modification date of a resource and the datetime of notification of a change to the resource.