Abstract: An indication to remove one or more data in a time series database is received. A metadata index associated with the time series database is updated to indicate a soft removal of each data of the one or more data. A data hole index associated with the time series database is updated to indicate a data hole at a location of each data of the one or more data in the time series database. Responsive to an input/output rate for the time series database being below a threshold, the data hole of each data of the one or more data is optimized.

Abstract: An electronic device includes a display module, a supporting frame and a pivoting mechanism connected to the display module and the supporting frame. The display module can pivot relative to the supporting frame. The pivoting mechanism includes two fixing components connected to the display module, two shaft components passing through the supporting frame, two locating components respectively disposed on an inner side of the supporting frame, two resilient components, two pulling components and two cam components. An end of each resilient component is connected to the corresponding locating component. An end of each pulling component is connected to the other end of the corresponding resilient component. A side of each cam component is connected to the corresponding fixing component, and the other side of each cam component is connected to the corresponding shaft component. The other end of the pulling component winds around the corresponding cam component.

Abstract: An electronic device includes a display module, a supporting frame and a pivoting mechanism connected to the display module and the supporting frame. The display module can pivot relative to the supporting frame. The pivoting mechanism includes two fixing components connected to the display module, two shaft components passing through the supporting frame, two locating components respectively disposed on an inner side of the supporting frame, two resilient components, two pulling components and two cam components. An end of each resilient component is connected to the corresponding locating component. An end of each pulling component is connected to the other end of the corresponding resilient component. A side of each cam component is connected to the corresponding fixing component, and the other side of each cam component is connected to the corresponding shaft component. The other end of the pulling component winds around the corresponding cam component.

Abstract: A multifunctional toilet comprises a water storage device having a guide rail, a toilet seat and an arm assembly. The water storage device is provided with a water tank having a water inlet and a water outlet. At the water inlet is provided an inlet valve having a float ball, and at the water outlet is provided an outlet valve. The opening and closing of the inlet valve is controlled by a controller. The opening and closing of the outlet valve is controlled by a rope. When the water tank moves to its lowest position, the controller will close the inlet valve, and the rope will open the outlet valve. At the water outlet outside the water tank is provided an expansion discharge pipe. Such a multifunctional toilet is simple in structure and has the advantage of automatically flushing the toilet without the use of electricity.