My log4j2.xml

log4j2.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!-- 
https://logging.apache.org/log4j/2.x/manual/async.html#AllAsync

Don't forget to set system property
-Dlog4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
     to make all loggers asynchronous. 

Levels: OFF,FATAL,ERROR,WARN,INFO,DEBUG,TRACE,ALL
-->
<Configuration monitorInterval="30" status="WARN">
    <Properties>
        <Property name="LOG_PATH">${env:LOG_PATH:-${sys:catalina.base:-/tmp}/logs}</Property>
    </Properties>
    <Appenders>
        <Console name="Console">
            <PatternLayout pattern="%date|%highlight{%-5level}|%logger|%msg%n"/>
        </Console>
        <!-- https://logging.apache.org/log4j/2.x/manual/appenders.html#RollingFileAppender -->
        <RollingFile name="File"
            fileName="${sys:LOG_PATH}/app.log"
            filePattern="${sys:LOG_PATH}/$${date:yyyy-MM}/app-%d{yyyy-MM-dd}-%i.log.gz"
            createOnDemand="true" immediateFlush="false">
            <PatternLayout pattern="%date|%-5level|%logger|%msg%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy />
            </Policies>
            <DefaultRolloverStrategy>
                <Delete basePath="${sys:LOG_PATH}" maxDepth="2">
                    <IfFileName glob="*/app-*.log*" />
                    <IfLastModified age="P90D" />
                </Delete>
            </DefaultRolloverStrategy>
        </RollingFile>
         <!-- https://logging.apache.org/log4j/2.x/manual/appenders.html#FailoverAppender -->
        <Failover name="Mail" primary="SMTP">
            <Failovers>
                <AppenderRef ref="SendGrid"/>
            </Failovers>
        </Failover>
        <!-- https://logging.apache.org/log4j/2.x/manual/appenders.html#SMTPAppender -->
        <SMTP name="Mail"
            bufferSize="3"
            subject="Error Notification from ${env:LOG_HOSTNAME:-${sys:hostName}}"
            from="${env:LOG_MAIL_FROM}" to="${env:LOG_MAIL_TO}"
            smtpHost="${env:SMTP_HOST}" smtpPort="${env:SMTP_PORT:-25}">
            <PatternLayout pattern="${%date|%level|%logger|%msg%n%rEx{5}%n}" />
            <Filters>
                <ThresholdFilter level="ERROR" />
                <!-- https://logging.apache.org/log4j/2.x/manual/filters.html#BurstFilter
                  limit the burstInterval to 1 hour
                  rate = maxBurst/burstInterval = 1/3600
                 -->
                <BurstFilter level="ERROR" rate="0.0002" maxBurst="1"/>
            </Filters>
        </SMTP>
        <!-- https://github.com/akunzai/log4j2-sendgrid-appender -->
        <SendGrid name="SendGrid"
            bufferSize="3"
            subject="Error Notification from ${env:LOG_HOSTNAME:-${sys:hostName}}"
            from="${env:LOG_MAIL_FROM}" to="${env:LOG_MAIL_TO}"
            apiKey="${env:SENDGRID_API_KEY}">
            <PatternLayout pattern="${sys:MAIL_LOG_PATTERN}" />
            <Filters>
                <ThresholdFilter level="ERROR" />
                <!-- https://logging.apache.org/log4j/2.x/manual/filters.html#BurstFilter
                  limit the burstInterval to 1 hour
                  rate = maxBurst/burstInterval = 1/3600
                 -->
                <BurstFilter level="ERROR" rate="0.0002" maxBurst="1"/>
            </Filters>
        </SendGrid>
    </Appenders>
    <Loggers>
        <Logger name="org.springframework" level="ERROR" includeLocation="true" />
        <Root level="INFO" includeLocation="true">
            <AppenderRef ref="Console"/>
            <AppenderRef ref="File"/>
            <AppenderRef ref="Mail"/>
        </Root>
    </Loggers>
</Configuration>