When using slf4j (or other) loggers, do you use 1️⃣ string interpolation -

<http://logger.info|logger.info>("the value is $value")

2️⃣ passing additional arguments -

<http://logger.info|logger.info>("the value is {}", value)

3️⃣ :thread-please: something else?

"... {}"

for logs that need to be removed by R8

2️⃣ is the intended way, it guarantees that the message won’t be interpolated if the corresponding level is not active

kotlin logging:

logger.debug { "hello $message" }

logger.debug { "hello $message" }

I'm not sure what ☝️ is, something you defined on your own?

Have you considered using structured logging, then no string interpolation is required...