How-To
Canary deployments: limit exposure and test the comparison
Choose representative traffic, define promotion criteria, and verify rollback compatibility before expanding a release.
Search articles
Search titles and article text.
How-To
Mean time to detect: calculate MTTD and expose measurement gaps
Use consistent onset and discovery timestamps, include customer-reported incidents, and interpret the average with its sample and uncertainty.
SRE
Run a post-incident review that explains the difficult decisions
Prepare evidence, reconstruct the timeline, examine contributing conditions, and choose follow-up proportionate to the incident.
How-To
Metrics for observability: choose the question before the chart
Counters, gauges, and distributions answer different questions. Build metrics that preserve scope, denominators, and the evidence behind an incident.
SRE
Turn postmortem lessons into changes you can verify
Translate incident findings into funded changes with an owner, a test, and evidence that the relevant failure mode became less likely or less costly.
SRE
Service level objectives: define the experience you intend to protect
Choose an SLI, target, and evaluation window that reflect user experience, then agree on the decisions an SLO result will change.
How-To
Read a distributed trace without mistaking it for the whole system
Understand spans, parent-child relationships, retries, and missing evidence so traces support a careful diagnosis.