Abstract: The present teaching relates to method, system, and programming for evaluating expressions. An expression indicative of conditions and metadata associated therewith is obtained. A determination is made as to whether the expression corresponds to a modified version of an earlier expression based on the metadata. In response to a determination that the expression is the modified version of the earlier expression, a query associated with the modified expression is transmitted to a forecasting cluster so that the modified expression is to be evaluated by the forecasting cluster. In response to a determination that the expression does not have a corresponding earlier expression, the expression is evaluated.

Abstract: Methods, systems, and programming for performing system updates are described herein. In a non-limiting embodiment, a first device from each of a plurality of rolls of devices may be downscaled, where each roll of devices is configured with information associated with that roll. Each first device may be updated with a new version of the information associated with a corresponding roll of devices, and each first device may be upscaled to the corresponding roll of devices. One or more additional devices from each of the plurality of rolls of devices may be downscaled, and, in parallel, each of the one or more additional devices may be updated with the new version of information associated with the corresponding roll of devices. Each of the one or more additional devices may then be upscaled to the corresponding roll of devices.

Abstract: The present teaching relates to method, system, and programming for evaluating expressions. An expression indicative of conditions and metadata associated therewith is obtained. A determination is made as to whether the expression corresponds to a modified version of an earlier expression based on the metadata. In response to a determination that the expression is the modified version of the earlier expression, a query associated with the modified expression is transmitted to a forecasting cluster so that the modified expression is to be evaluated by the forecasting cluster. In response to a determination that the expression does not have a corresponding earlier expression, the expression is evaluated.

Abstract: Methods, systems, and programming for performing system updates are described herein. In a non-limiting embodiment, a first device from each of a plurality of rolls of devices may be downscaled, where each roll of devices is configured with information associated with that roll. Each first device may be updated with a new version of the information associated with a corresponding roll of devices, and each first device may be upscaled to the corresponding roll of devices. One or more additional devices from each of the plurality of rolls of devices may be downscaled, and, in parallel, each of the one or more additional devices may be updated with the new version of information associated with the corresponding roll of devices. Each of the one or more additional devices may then be upscaled to the corresponding roll of devices.