Sherlock.io: An Upgraded Machine Learning Monitoring System

In 2019, eBay started an initiative to upgrade the monitoring platform to handle increased monitoring signals. We decided to make these upgrades in order to cope with the vast number of queries our system encounters, which in turn revealed several engineering challenges to be overcome. In addition to ingestion, storage and query layer, we decided to upgrade the anomaly detection module because the anomaly detection results that were provided by the previous monitor platform to site SEC/SRE received complaints due to noise and inaccuracy. We revisited all of the use cases that have been used by the SEC/SRE. Business metrics These metrics, including listing number/minute, checkout number/minute and others are critical signals for eBay business.