%% date:: [[2024-01-05]] parent:: %% # [[RED Metrics]] RED [[Metrics]] are a philosophy for [[Monitoring]] systems, particularly those with [[Microservices|microservices-based]] architectures, refer to Rate Error and Duration. It was coined by [[Tom Wilkie]] and is based on Google's [[Four Golden Signals of SRE]]. RED stands for: - [[Throughput|Rate]]: number of requests per second that a system can handle - [[Errors]]: number of errors that have failed - [[Duration]]: how long it takes to process a request.