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Alex Rivera
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There is a pattern that happens every now and then. I have a method called many times, and it contains this snippet: Foo foo = getConfiguredFoo(); if (foo == null) { logger.warn("Foo not configured"); foo = getDefaultFoo(); } Then my log file is cluttered with this warning a hundred times. I know I can grep it out, but I wonder if there is a better way to see this warning only once. Note: the duplication of messages is a correct behavior by default, so this is not about avoiding unintentional duplicate log message . I tagged my question as log4j, but I'm open to other java logging frameworks.
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