package logback.test.concurrent;
 
import java.io.File;
import java.io.IOException;
 
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
public class Test {
 
    private static Logger logger = LoggerFactory.getLogger(Test.class);
 
    public static void main(String[] args) {
 
        File check = new File("./lock");
        if (!check.exists()) {
            try {
                check.createNewFile();
            } catch (IOException e) {
                logger.error("Failed to create file: {}", e);
            }
        } else {
            logger.error("Faile already exists");
            System.exit(1);
        }
 
        while (true) {
            logger.warn("event");
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                logger.error("Interrupted exception occured: {}", e);
            }
        }
    }
 
}

<?xml version="1.0" encoding="UTF-8"?>
<included>
 
   <property name="root.log.filename" value="test.log" />
 
   <property name="common.log.file.date.pattern" value="yyyy-MM-dd" />
 
   <property name="common.log.conversionpattern" value="[%d{'yyyy-MM-dd HH:mm:ss,SSS'}] [test] [%X{username}] [%t] [%c{0}][%marker] [%p] - %m%n" />
 
 
   <appender name="LOGFILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
      <file>/PATH/TO/LOGS/${root.log.filename}</file>
      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        
         <fileNamePattern>/PATH/TO/LOGS/${root.log.filename}.%d{${common.log.file.date.pattern}}</fileNamePattern>
      </rollingPolicy>
      <encoder>
         <pattern>${common.log.conversionpattern}</pattern>
      </encoder>
   </appender>
    
   <root level="INFO">
      <appender-ref ref="LOGFILE" />
   </root>
    
 
</included>

[2016-02-13 00:00:03,069] [test] [] [main] [Test][] [WARN] - event

[2016-02-13 00:00:02,280] [test] [] [main] [Test][] [ERROR] - Faile already exists