Tools / Datadog Interview questions
What is the difference between Service Level Indicators and Service Level Objectives?
A Service Level Indicator (SLI) is the actual measured signal - for example, the ratio of successful requests to total requests over some period - it's a number reflecting what's really happening.
A Service Level Objective (SLO) is the target applied to that indicator - for example, '99.9% of requests should succeed over a rolling 30 days' - it's the goal, not the measurement itself.
In Datadog specifically, you configure an SLO by picking (or building) an underlying SLI - either a metric-based ratio query or a monitor's uptime - and layering a target percentage and time window on top of it; the SLI is the raw ingredient, the SLO is the recipe applied to it.
The SLI is best described as:
An SLO is built by:
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