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Understand service health, incidents, and the telemetry used to investigate production systems. Connect reliability outcomes to engineering decisions.
Terms beginning with T
10 termsTail-based sampling
Tail-based sampling is a sampling decision made after later spans and overall trace outcome are available.
Reliability and observabilityTelemetry cost
Telemetry cost is the compute, network, storage, query, and operational expense of observability data.
Reliability and observabilityTelemetry signal
Telemetry signal is a distinct form of machine-generated evidence such as a metric, log, trace, or profile.
Reliability and observabilityTermination drain
Termination drain is a reliability concept used to describe a specific condition, control, or decision in the operation of software services.
Reliability and observabilityThreshold alert
Threshold alert is an alert evaluated when a signal crosses a numeric boundary for a defined duration.
Reliability and observabilityTrace context
Trace context is the small set of identifiers and flags passed between components so telemetry can associate an operation with its trace and parent span. It allows distributed work to be represented as one connected execution.
Reliability and observabilityTrace ID
Trace ID is the identifier shared by spans belonging to one distributed operation.
Reliability and observabilityTrace sampling
Trace sampling is selection of traces or spans to retain from a larger set of observed operations.
Reliability and observabilityTrace signal
Trace signal is evidence that records the path and timing of one operation across services, queues, and databases.
Reliability and observabilityTrace waterfall
Trace waterfall is a time-aligned view showing span nesting, overlap, waiting, and duration.
Reliability and observability