RED method
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Three service metrics: R, E, D.
Definition
RED: Rate counted in req/sec, Errors as percentage of failed reqs, Duration as p50/p95/p99 histogram. Complementary to USE method (Brendan Gregg, 2013) for resources. Standard Grafana SRE dashboard.
Origin
Concept introduced by Tom Wilkie at OSCON Texas 2017 ; popularised by Grafana Labs.
Example in context
An EDI Receiver service exports 3 Prometheus metrics: http_requests_total, http_errors_total, http_request_duration_seconds — RED.
Related terms
- USE — resource complement.