Execution guarantees in an on-demand network code execution system

A method implemented by a computing system to manage code execution in an on-demand code execution system, the computer-implemented method comprising:

• obtaining, from one or more devices external to the computing system, first instructions instructing the computing system to execute a task, wherein the task is associated with a request to implement an execution guarantee for the task, wherein the execution guarantee specifies that the task is to be successfully executed on the on-demand code execution system no more than a desired number of times for instructions including a first execution identifier, wherein the execution guarantee is not implemented for instructions not including the first execution identifier, wherein the task is associated with code executable to implement functionality corresponding to the task, and wherein the first instructions include the first execution identifier;
• obtaining an execution record corresponding to the first execution identifier and indicating a history of executions of the task;
• verifying, from at least the execution record, that a number of other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is less than the desired number of times associated with the first execution identifier;
• and
• in response to verifying that the number of the other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is less than the desired number of times associated with the first execution identifier, responding to the first instructions at least by:
• generating an execution environment on the on-demand code execution system in which to execute the task;
• initiating an execution of the task on the on-demand code execution system within the execution environment;
• and
• recording a state of execution of the task within the execution record;
• obtaining, from the one or more devices external to the computing system, second instructions instructing the computing system to execute the task, the second instructions including the first execution identifier associated with the request to verify that, for instructions including the first execution identifier, the task is successfully executed on the on-demand code execution system no more than the desired number of times;
• and
• responding to the second instructions at least by:
• verifying, from at least the execution record, that the number of the other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is not less than the desired number of times associated with the first execution identifier;
• and
• declining to execute the task on the on-demand code execution system;
• and
• obtaining, from the one or more devices external to the computing system, third instructions instructing the system to execute the task, the third instructions not including the first execution identifier associated with the request, and in response to the third instructions not including the first execution identifier, initiating an additional execution of the task on the on-demand code execution system without implementing the execution guarantee.

Non-transitory computer-readable media including computer-executable instructions that, when executed by a computing system, cause the computing system to:

• obtain, from one or more devices external to the computing system, first instructions instructing the computing system to execute a task, wherein the task is associated with code executable to implement functionality corresponding to the task, wherein the task is associated with a request to implement an execution guarantee for the task, wherein the execution guarantee specifies that the task is to be successfully executed on an on-demand code execution system no more than a desired number of times for instructions including a first execution identifier, wherein the execution guarantee is not implemented for instructions not including the first execution identifier, and wherein the instructions include the first execution identifier;
• verify, from an execution record corresponding to the first execution identifier and indicating a history of executions of the task, that a number of other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is less than the desired number of times associated with the first execution identifier;
• and
• in response to verifying that the number of the other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is less than the desired number of times associated with the first execution identifier, responding to the first instructions at least by:
• generating an execution environment on the on-demand code execution system in which to execute the task;
• initiating an execution of the task on the on-demand code execution system within the execution environment;
• and
• recording a state of execution of the task within the execution record;
• obtain, from the one or more devices external to the computing system, second instructions instructing the computing system to execute the task, the second instructions including the first execution identifier associated with the request to verify that, for instructions including the first execution identifier, the task is successfully executed on the on-demand code execution system no more than the desired number of times;
• and
• respond to the second instructions at least by:
• verifying, from at least the execution record, that the number of the other executions of the task that are associated with the first execution identifier and that have successfully occurred or are occurring is not less than the desired number of times associated with the first execution identifier;
• and
• declining to execute the task on the on-demand code execution system;
• and
• obtain, from the one or more devices external to the computing system, third instructions instructing the system to execute the task, the third instructions not including the first execution identifier associated with the request, and in response to the third instructions not including the first execution identifier, initiate an additional execution of the task on the on-demand code execution system without implementing the execution guarantee.