Why this topic matters in interviews
SRE interviews test reliability thinking. A strong candidate explains measurable reliability, incident response, observability, automation, risk management and user impact.
15 interview questions to prepare
SRE applies software engineering practices to operations with focus on reliability, automation, measurement and user experience.
A Service Level Indicator is a measurable signal of service behavior such as latency, availability or error rate.
A Service Level Objective is a target for an SLI, such as 99.9% successful requests over 30 days.
Error budget is the allowed unreliability within an SLO. It helps balance reliability and release velocity.
Detect, assess severity, communicate, mitigate, coordinate owners, validate recovery and conduct postmortem.
A postmortem that focuses on system improvement and learning rather than blaming individuals.
Manual, repetitive, automatable operational work that does not provide lasting value.
Tune alerts around user impact, remove noisy alerts, use SLO-based alerts and define clear runbooks.
Monitoring tells known signals; observability helps explore unknown issues using metrics, logs and traces.
Identify user journeys, choose SLIs, set SLOs, alert on burn rate and review reliability trends.
Burn rate shows how fast error budget is being consumed and helps detect urgent reliability risks.
Use historical usage, growth forecasts, load testing, saturation metrics and failure margins.
Use canary, blue-green, feature flags, automated rollback, health checks and progressive delivery.
Symptoms, dashboards, commands, owners, mitigation steps, rollback actions and validation checks.
Connect technical actions to user impact, SLOs, communication, risk, automation and prevention.