Fluent Logging addKeyValue() vs Parameterized logging

[SidB3]

Hello,

I was wondering if I do LOGGER.atDebug().addKeyValue("key", computeValue()).log("message");

Will the computeValue() method be evaluated if LOGGER is at error level or will it work like Parameterized logging and check the log level first?

[ppkarwasz]

Sure, computeValue() will be eagerly evaluated. To evaluate it lazily you need to pass Supplier to addKeyValue:

LOGGER.atDebug().addKeyValue("key", this::computeValue).log("message");