About base assertions

Asserts uses a curated library of rules to analyze incoming time-series data and provide key insights in the form of assertions. These assertions are categorized into the SAAFE Model: Saturation, Amend, Anomaly, Failure, and Error, to organize and help you understand their implications for the system. For more information on the SAAFE Model, refer to About the SAAFE Model.

In terms of implementation, Asserts operates with two main sets of rules that generate assertions: base rules and framework-specific rules. Base rules focus on common request and resource metrics across different platforms and frameworks.

The following table summarizes base assertions raised by the base rules.

Metric type	Assertion	SAAFE category
Request	RequestRateAnomaly	Anomaly
	LatencyAverageAnomaly	Anomaly
	LatencyAverageBreach	Error
	LatencyP99ErrorBuildup	Error
	ErrorRatioAnomaly	Anomaly
	InboundClientErrorAnomaly	Anomaly
	ErrorRatioBreach	Error
	ErrorBuildup	Error
Logging	LoggerRateAnomaly	Anomaly
	ErrorLogRateBreach	Error
Resource	Saturation	Saturation
	ResourceRateAnomaly	Anomaly
	ResourceRateBreach	Error
	ResourceMayExhaust	Error