logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE logback>
<configuration>
	<!-- http://qiita.com/opengl-8080/items/49719f2d35171f017aa9 -->
	<property name="ROOT_LEVEL" value="WARN" />
	<property name="LOGGING_DIR" value="logs" />

	<appender name="STDOUT_PATTERN" class="ch.qos.logback.core.ConsoleAppender">
		<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
			<level>INFO</level>
		</filter>
		<encoder>
			<pattern>[%level] %d{HH:mm:ss.SSS} [%t] %marker %logger{0}[%line] %msg%n</pattern>
		</encoder>
	</appender>

	<appender name="LOG_FILE_PATTERN" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
			<level>INFO</level>
		</filter>
		<file>${LOGGING_DIR}/api.log</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${LOGGING_DIR}/api.%d{yyyyMMdd}.log</fileNamePattern>
			<maxHistory>3</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>[%level] %d{HH:mm:ss.SSS} [%t] %marker %logger{0}[%line] %msg%n</pattern>
		</encoder>
	</appender>

	<appender name="ERROR_LOG_FILE_PATTERN" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
			<level>WARN</level>
		</filter>
		<file>${LOGGING_DIR}/api-error.log</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${LOGGING_DIR}/api-error.%d{yyyyMMdd}.log</fileNamePattern>
			<maxHistory>3</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>[%level] %d{HH:mm:ss.SSS} [%t] %marker %logger{0}[%line] %msg%n</pattern>
		</encoder>
	</appender>

	<appender name="ASYNC_PATTERN_LOG" class="ch.qos.logback.classic.AsyncAppender">
		<appender-ref ref="LOG_FILE_PATTERN" />
	</appender>
	<appender name="ASYNC_PATTERN_LOG_ERROR" class="ch.qos.logback.classic.AsyncAppender">
		<appender-ref ref="ERROR_LOG_FILE_PATTERN" />
	</appender>

	<logger name="my.project.package" level="INFO" additivity="false">
		<appender-ref ref="STDOUT_PATTERN" />
		<appender-ref ref="ASYNC_PATTERN_LOG" />
		<appender-ref ref="ASYNC_PATTERN_LOG_ERROR" />
	</logger>

	<logger name="org.springframework" level="INFO" additivity="false">
		<appender-ref ref="STDOUT_PATTERN" />
		<appender-ref ref="ASYNC_PATTERN_LOG" />
		<appender-ref ref="ASYNC_PATTERN_LOG_ERROR" />
	</logger>

	<root level="${ROOT_LEVEL}">
		<appender-ref ref="STDOUT_PATTERN" />
		<appender-ref ref="ASYNC_PATTERN_LOG" />
		<appender-ref ref="ASYNC_PATTERN_LOG_ERROR" />
	</root>

</configuration>