Best practice for routing logs per module in Spring Modulith (Logback configuration)

[vincentlejeune]

Hi,

I'm working on a modular monolith with Spring Modulith and Logback, and I’d like to route logs to separate files per module (e.g., order.log, payment.log, etc.) to improve diagnostics and monitoring.

I know there are approaches using SiftingAppender with MDC or TurboFilter, but I’d like to understand if there’s a more idiomatic or built-in solution with Spring Modulith, perhaps leveraging module metadata or observability integration.

Specifically, I’d appreciate guidance on:

• Recommendations for combining Spring Modulith, Logback, and SiftingAppender (or similar) to route logs per module.
• Whether there is a Modulith-provided hook (like a span attribute or module identifier) that can be automatically propagated into the MDC.
• Any existing official or community templates, starter configurations, or extension points that support this log separation strategy.

A sample configuration or reference would be extremely helpful!

Thanks for your work on Modulith