Abstract: A surgical drainage system is disclosed that includes an assay device operatively coupled to a surgical drainage tube. The drainage tube is configured for implantation within a surgical bed of a subject to drain surgical drain fluid out of the surgical bed. The assay device is configured to detect at least one analyte within the drainage fluid. The at least one analyte is indicative of a surgical bed condition.

Abstract: Implementations are provided herein for providing a consistent view of file during an extended backup process of a file system using a persistent cache layer to tier data to an external repository. A snapshot of the files that are targeted for backup can be taken. A deep write-back operation can then be processed that includes processing all outstanding write-back operations and associated convert-and-store-metadata operations for each file targeted in the backup process. After the deep write-back process finishes, a backup index of the storage layer can be generated and the backup can be performed relying on a consistent view of the storage layer being preserved throughout the backup process.