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Autograder is used to measure source code quality based on blackbox testing. It will compare source code execution result with existing test cases and generate grade based on comparation result. Autograder can be used in college to help lecturer to test students skill in programming. It can be applied in laboratory or online course so students can use it to test their skill. Most of autograder use centralized architecture which it just execute and grade only one request at a time so if students submit their code to test, it will create a long queue and can risk highly to cause timeout because of long queue and unexecuted request. In this paper, we propose to apply distributed architecture for autograder to reduce queue and lower the risk for unexecuted request that can cause error in grading.