Abstract: A database stores a document as a plurality of encrypted records, where each record is indicative of an incremental change to the state of the document, and encrypted using a document key. The document key is stored with encryption decryptable using a group key, and the group key is stored with encryption decryptable using a first access key. In response to a request to rotate from the first access key to a second access key, the database decrypts the group key using the first access key, a stores a group key re-encrypted with the second access key.

Abstract: Systems and methods are described for indexing related documents to provide more robust search functionality within an index. In one aspect, a first document, such as a comment or status update associated with a second document or ticket item, may be obtained. As a result of the first document including first data that is linked to second data of the second document, an instance of the second document may be modified to include at least a portion of the first data. An index, which indexes a corpus of documents, such as ticket items, may be updated to include the modified second document, such that the first data is associated with the modified second document in the index. Responsive to a query for the first data in the index, the modified second document and any included first data may be returned.

Abstract: A method of fabricating a hole assisted fiber includes forming one or more slots in the perimeter of the cladding region. A tube is overcollapsed around the perimeter of the cladding region to form one or more channels, where the one or more channels bounded on one side by the overcollapsed tube. A fiber is drawn from the overcollapsed preform. An internal pressure is applied to the one or more channels during the fiber drawing step to form one or more holes of a pre-selected shape within the cladding region.

Abstract: A hole-assisted fiber comprises a core region and a cladding region, where the cladding region includes multiple substantially elliptical holes spaced apart from each other to surround the core region. The holes are filled with one of a gas and a liquid to form a low refractive index portion of the cladding region.