SLI: Service Level Indicators
About
SLI (Service Level Indicators) are metrics that indicate how well a service is performing.
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Type
Resources Metrics
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Process Metrics
Process or Work Metrics give the system’s internal health and performance (observability).
- success / error rate
Example:
- Web server (at time 2015-04-24 08:13:01 UTC)
| Subtype | Description | Value |
|---|---|---|
| Performance | ||
| throughput | requests per second | 312 |
| latency | 90th percentile response time in seconds | 0.4 |
| Exit status | ||
| success | percentage of responses that are 2xx since last measurement | 99.1 |
| error | percentage of responses that are 5xx since last measurement | 0.1 |
- Data store / Database (at time 2015-04-24 08:13:01 UTC)
| Subtype | Description | Value |
|---|---|---|
| Performance | ||
| latency | 90th percentile query time in seconds | 0.02 |
| throughput | queries per second | 949 |
| Exit status | ||
| success | percentage of queries successfully executed since last measurement | 100 |
| error | percentage of queries yielding exceptions since last measurement | 0 |
| error | percentage of queries returning stale data since last measurement | 4.2 |