Logging best practices in Kubernetes

[jebeaudet]

Hi!

I'm using logback with Spring Boot 3.3.x. While looking at my logs, I saw a warning indicating that I should not use the CONSOLE appender because it is slow :

13:46:30,649 |-INFO in ch.qos.logback.core.ConsoleAppender[CONSOLE] - BEWARE: Writing to the console can be very slow. Avoid logging to the 
13:46:30,649 |-INFO in ch.qos.logback.core.ConsoleAppender[CONSOLE] - console in production environments, especially in high volume systems.
13:46:30,649 |-INFO in ch.qos.logback.core.ConsoleAppender[CONSOLE] - See also https://logback.qos.ch/codes.html#slowConsole

However, this application runs in docker on a standard Kubernetes cluster. From the info I gathered, the OCI runtime automatically collects the logs from the stdout and output them to a file on the node, and after some other process collect them and send them to your logstack (filebeat, fluentd, etc.).

So my question is, is it possible to optimize this in this context or this performance hit is something I have to live with?

TIA!