DecoratorPattern

Code Ape Tech Column

Nov 18, 2022 · Backend Development

Using SLF4J MDC to Correlate Logs Across Threads and Asynchronous Tasks in Java

This article explains how to use SLF4J's MDC to attach a request identifier to log entries, demonstrates the limitation of MDC in asynchronous threads, and provides a decorator‑pattern solution (MDCRunnable) that propagates the context, enabling reliable log correlation across threads in Java backend applications.