Threading as a service

A computer-implemented method to process requests to execute user code on one or more virtual machine instances, the method comprising:

• as implemented by one or more computing devices configured with specific executable instructions,
• providing a plurality of warmed virtual machine instances, each of the warmed virtual machine instances containing a software component associated with a programming language;
• subsequent to providing the plurality of warmed virtual machine instances, processing a request to execute a user code, wherein the request is associated with information usable to execute the user code;
• and
• executing the user code on a virtual machine instance, of the plurality of warmed virtual machine instances, based at least in part on the information associated with the processed request.

A system for processing requests to execute user code on one or more virtual machine instances, the system comprising:

• one or more processors;
• one or more memories having stored thereon instructions, which, when executed by the one or more processors, cause the one or more processors to:
• cause a plurality of warmed virtual machine instances to be provided, each of the warmed virtual machine instances containing a software component associated with a programming language;
• subsequent to causing the plurality of warmed virtual machine instances to be provided, process a request to execute a user code,
• wherein the request is associated with information usable to execute the user code;
• and
• cause the user code to be executed on a virtual machine instance, of the plurality of warmed virtual machine instances, based at least in part on the information associated with the processed request.

Non-transitory physical computer storage storing specific executable instructions, which, when executed by a computer system, cause the computer system to:

• cause a plurality of warmed virtual machine instances to be provided, each of the warmed virtual machine instances containing a software component associated with a programming language;
• subsequent to causing the plurality of warmed virtual machine instances to be provided, process a request to execute a user code, wherein the request is associated with information usable to execute the user code;
• and
• cause the user code to be executed in the identified virtual machine instance, of the plurality of warmed virtual machine instances, based at least in part on the information associated with the processed request.