URLShortener/src/main/resources/logback-spring.xml

<!-- logback-spring.xml -->
<configuration>
    <!-- File Appender -->
    <appender name="file" class="ch.qos.logback.core.FileAppender">
        <file>logs/shortener.log</file>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <!-- Appender for console output -->
    <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>

    <!-- Root logger -->
    <root level="debug">
        <appender-ref ref="file"/>
    </root>
</configuration>