PROVIDING A CONTENT PREVIEW

摘要

A content preview of a content item stored in an online storage system can be viewed on a client device without the content item itself being downloaded to the client device and without the use of software associated with the content item being installed on the client device. Furthermore, data storage and processing requirements can be minimized by creating and storing only one content preview for each unique content item. The content item can be identified by using the content item as a hash key in a hashing algorithm. The resulting unique identifier can be used to search a preview index that lists all created content previews and their location. A content preview is only created if one does not exist. The unique identifier can be used to locate the content preview and return it in response to a preview request by a client device.

主权项

1. A computer-implemented method comprising:
splitting, via one or more processors, a content item into at least a first fixed size block containing a first portion of the content item and a second fixed size block containing a second portion of the content item, the second portion being different from the first portion; computing, via the one or more processors, a first hash identifier by hashing at least part of the first portion of the first fixed size block with a first hash key; computing, via the one or more processors, a second hash identifier by hashing at least part of the second portion of the second fixed size block with a second hash key; generating, via the one or more processors, a third hash key by combining the first hash identifier and the second hash identifier; determining, based on the third hash key, that a content preview of the content item is not available; and creating, via the one or more processors, in response to the determination that the content preview of the content item is not available, the content preview of the content item.