Abstract: Certain example embodiments provide a single pass, reverse chronological approach to write-ahead log recovery, enabling space- and time-efficient the recovery of stored data from large write-ahead logs to a transient storage medium. The techniques described herein can in certain instances enable fast and efficient recovery, even in scenarios where at the time of a failure requiring such a recovery the live log is potentially multiple terabytes or larger in size. Certain example embodiments make use of a filtering mechanism (e.g., involving potentially stateful delete, skip, and/or transaction filters), a key/value property (allowing a live set of data, once identified, to be applied in any arbitrary order), etc. A simplified environment with a small closed set of mutative operations allows for the performing of recovery backwards by scanning the log from the most recent written record backwards in time (and, in other words, finishing with the oldest record).

Abstract: A faucet controller for operating a valve mounted in association with a faucet, having a joystick actuator mountable on the valve for movement between a normal at rest position and a valve operating position, and a whisker connected with the joystick for forcing the joystick actuator into the valve operating position.

Abstract: A mount for a device, such as a faucet controller or valve actuator assembly for mounting the device to a sink or basin having carrier arm mounting holes. A valve actuator assembly for operating a valve for a sink or basin and operable with a push pad, the valve actuator assembly having a housing mountable to the sink or basin, the housing supporting a shaft and a valve, the shaft rotatable between a normal at rest position and a valve operating position, a rocker operably connected with a shaft, for rotation with the shaft, the rocker having an extent for operably urging a member supporting the valve when the shaft in is the valve operating position, and a push pad mechanism operably connected with the shaft and the push pad to selectively activate the valve.