Use logback instead of simplelogger

pom.xml

@@ -43,12 +43,11 @@
             <optional>true</optional>
         </dependency>
         <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-simple</artifactId>
-            <version>1.8.0-beta4</version>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.3.0-alpha5</version>
         </dependency>
 
-
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>

src/main/resources/logback.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true">
+    <!-- You can configure per-logger level at this point -->
+    <!-- This set of preconfigured loggers is good if you want to have a DEBUG level as baseline -->
+    <logger name="io.netty" level="INFO"/>
+    <logger name="reactor" level="INFO"/>
+    <logger name="com.github.langebangen.kensa" level="DEBUG"/>
+
+    <!-- Display the logs in your console with the following format -->
+    <!-- You can learn more about this here: https://logback.qos.ch/manual/layouts.html#ClassicPatternLayout -->
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <!-- Log to a file as well, including size and time based rolling -->
+    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <fileNamePattern>kensa.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
+            <maxFileSize>100MB</maxFileSize>
+            <maxHistory>90</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <charset>UTF-8</charset>
+            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %-40.40logger{39} : %msg%n</Pattern>
+        </encoder>
+        <prudent>true</prudent>
+    </appender>
+
+    <!-- Here you can set the base logger level. If DEBUG is too chatty for you, you can use INFO -->
+    <!-- Possible options are: ALL, TRACE, DEBUG, INFO, WARN, ERROR, OFF -->
+    <root level="DEBUG">
+        <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="FILE"/>
+    </root>
+</configuration>