Friday, December 15, 2006

Migrate from log4j to logback in seconds

It may sound insignificant but we migrated our most important
applications in production from log4j 1.3 over to logback version 0.7. We have done this without changing a single line of code in our applications but by merely replacing the file log4j.jar with log4j-bridge.jar in the relevant WEB-INF/lib directories.

Log4j-bridge intercepts calls to log4j's Logger class and transparently redirects them to logback.

I am thrilled to see that for our real-world applications previously using log4j, the migration process to logback was quick and painless.

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