@Override
    public boolean shouldSummarize(final Logger logger) {
        val propertyValue = System.getProperty(SYSTEM_PROPERTY_LOG_SUMMARY_ENABLED);
        if (StringUtils.isNotBlank(propertyValue)) {
            return BooleanUtils.toBoolean(propertyValue);
        }
        return !logger.isDebugEnabled();
    }
System property to enable/disable log message summarization.
core/cas-server-core-util-api/src/main/java/org/apereo/cas/util/logging/DefaultLogMessageSummarizer.java