Java
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Why this exists Logs are the first thing you open in an incident, so their quality decides how fast you find the cause. Java applications log through SLF4J (the API) with Logback (the usual implementation), and Spring…
Logging with SLF4J and Logback: Levels, MDC, Rolling Files and JSON Output
Log the way production Java services do: SLF4J with parameterised messages, choosing levels, logging exceptions correctly, a correlation id through MDC, Logback configuration with rolling files or JSON to stdout, changing levels at runtime, and what never to log.
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