Resource allocation for computer processing

A system comprising:

• one or more processors configured to execute computer program instructions;
• and
• computer storage media encoded with computer program instructions that, when executed by one or more processors, cause a computer device to perform operations comprising:
• executing, in a computer system that comprises multiple processing resources, a job that receives as input a data stream, wherein the amount of data in the data stream is unbounded;
• iteratively determining, for the job:
• a backlog growth over a first period of time, wherein the backlog growth is a measure of a growth of unprocessed data in the received data stream that is to be input into the job;
• a backlog volume that is a measure of unprocessed data in the received data stream that is to be input into the job;
• determining, based on the backlog growth and the backlog volume, whether to adjust a quantity of processing resources allocated to the job;
• 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;
• and
• 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.