Structured logging, ELK stack, Azure Log Analytics — centralized log collection, search, and analysis.
Five passes over the same idea, each from a different angle. Do them in order, or jump to whichever you need.
Structured logging with JSON enables powerful querying and analysis. Key concepts: log levels, structured fields, correlation IDs, centralized collection (Fluentd, Filebeat), storage (Elasticsearch, Azure Log Analytics), and KQL/Lucene queries. Best practices: don't log secrets, use correlation IDs, and set retention policies.
