Rate limiting in query processing based on computation cost

A system comprising:

• a first computing device adapted to receive an application programming interface (API) request from a second computing device, wherein the API request comprises at least a first request field and a second request field, the first computing device configured to store a set of instructions that, when executed, cause the first computing device to:
• evaluate at least the first request field to determine a first complexity measure;
• assign a first field score to at least the first request field based on the first complexity measure;
• evaluate at least the second request field to determine a second complexity measure;
• assign a second field score to at least the second request field based on the second complexity measure;
• combine the first field score and the second field score to generate a total field score for the API request;
• and
• constrain, using an API request complexity model and the total field score, a processing of the received API request from the second computing device.

A non-transitory computer-readable medium having stored thereon instructions, that when performed by a processor of a first computing device, cause the computing device to at least:

• receive, at the first computing device, an application programming interface (API) request from a second computing device, wherein the API request comprises at least a first request field and a second request field;
• evaluate at least the first request field to determine a first complexity measure;
• assign a first field score to at least the first request field based on the first complexity measure;
• evaluate at least the second request field to determine a second complexity measure;
• assign a second field score to at least the second request field based on the second complexity measure;
• combine the first field score and the second field score to generate a total field score for the API request;
• and
• constrain, using an API request complexity model and the total field score, a processing of the received API request from the second computing device.