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Is there any disadvantage, if i kept the logging level at INFO & my application is printing large logs on each page response ? Will there be any delay in response time of each page ?
Depends on how many log messages you are printing. Going by what you say, it looks like the messages are very verbose, in which case you should have logged them at DEBUG level. Applications in production, usually configure the log level to be INFO or higher. This reduces the amount of log messages and also to some extent (depending on how much you log) increases the performance of the application.