I want to control logging levels (e.g. INFO, ERROR, DEBUG) interactively such that I can change them on the fly and have my logging policy (JavaScript) add additional content to the log messages. I want this to happen in a "timely" manner.
I'm setting the "logLevel" value in a KVM per proxy. I know from docs that the KVM cache is not cleared when updating the KVM in the UI or management API.
So, there are a few options:
What other options are there?
Use KVM,
Keep interval small.
Validate your concerns about "tradeoff on performance" in practice.
I'll bet it won't be extravagant.