Observability & SRE practices
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Technical
Explain how Prometheus scrapes metrics and the pull vs push model.
Describe the pull model: targets, scrape config, and storage. When would you use a push gateway or push-based systems (e.g. for batch jobs)? What are the tradeoffs?
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What is the difference between Prometheus rate() and increase() and when do you use each?
Technical
What are the four golden signals of monitoring? How do you measure them?
Technical
Explain the difference between RED and USE metrics. When do you use each?
Technical
What is the difference between a histogram and a summary in Prometheus?
Technical