Abstract: A job that receives as input a data stream is executed. For the job, it is iteratively determined a backlog growth over a first period of time; a backlog volume; and whether to adjust a quantity of processing resources. For each iteration for which the quantity of processing resources allocated to the job are determined to be adjusted, adjusting the quantity of processing resources allocated to the job. For each iteration for which the quantity of processing resources allocated to the job are determined not to be adjusted, maintaining the quantity of processing resources allocated to the job.

Abstract: A job that receives as input a data stream is executed. For the job, it is iteratively determined a backlog growth over a first period of time; a backlog volume; and whether to adjust a quantity of processing resources. For each iteration for which the quantity of processing resources allocated to the job are determined to be adjusted, adjusting the quantity of processing resources allocated to the job. For each iteration for which the quantity of processing resources allocated to the job are determined not to be adjusted, maintaining the quantity of processing resources allocated to the job.

Abstract: A job that receives as input a data stream is executed. For the job, it is iteratively determined a backlog growth over a first period of time; a backlog volume; and whether to adjust a quantity of processing resources. For each iteration for which the quantity of processing resources allocated to the job are determined to be adjusted, adjusting the quantity of processing resources allocated to the job. For each iteration for which the quantity of processing resources allocated to the job are determined not to be adjusted, maintaining the quantity of processing resources allocated to the job.

Abstract: Conversions can be applied to various asynchronous and/or concurrent mechanisms. In particular, such mechanism can be transformed into first-class events to facilitate processing with respect to first-class events including but not limited to querying. Both conventional events and asynchronous computations can be transformed to these events, for example by generating and linking a proxy event thereto.

Abstract: Event-based processing is employed in conjunction with lazy and stateless events. Addition of any handlers is deferred until a user-specified handler is identified. Furthermore, event handlers can be composed at this time including the same properties as underlying events. More specifically, handlers specified on composite events can be composed and propagated up to a one or more related source events. As a result, handlers are not accumulated on composite events thereby making them stateless while allowing equivalent functionality upon invocation of the composed top-level handler.