{"id":514,"date":"2026-02-26T08:04:14","date_gmt":"2026-02-26T08:04:14","guid":{"rendered":"https:\/\/iotnoob.com\/wordpress\/?p=514"},"modified":"2026-02-26T08:13:27","modified_gmt":"2026-02-26T08:13:27","slug":"logback-slf4j","status":"publish","type":"post","link":"https:\/\/iotnoob.com\/wordpress\/2026\/02\/26\/logback-slf4j\/","title":{"rendered":"Logback – SLF4J"},"content":{"rendered":"\n

simple project \u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e17\u0e14\u0e25\u0e2d\u0e07\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19 Logback \u0e1a\u0e19 simple log formatter for Java (SLF4J)
\u0e42\u0e14\u0e22\u0e2b\u0e25\u0e31\u0e01\u0e01\u0e32\u0e23 \u0e40\u0e2b\u0e21\u0e37\u0e2d\u0e19 SLF4J \u0e40\u0e1b\u0e47\u0e19\u0e21\u0e32\u0e15\u0e23\u0e32\u0e10\u0e32\u0e19 \u0e2a\u0e48\u0e27\u0e19 Logback \u0e19\u0e31\u0e1a\u0e40\u0e1b\u0e47\u0e19 implementor<\/p>\n\n\n\n

\u0e02\u0e31\u0e49\u0e19\u0e41\u0e23\u0e01 \u0e40\u0e23\u0e32\u0e01\u0e47 add dependencies \u0e40\u0e2b\u0e25\u0e48\u0e32\u0e19\u0e35\u0e49<\/p>\n\n\n\n

implementation ‘org.slf4j:slf4j-api:2.0.12’
\/\/ Logback (The Implementation – \u0e23\u0e27\u0e21\u0e16\u0e36\u0e07 Binding)
implementation ‘ch.qos.logback:logback-classic:1.4.14’
\/\/ \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a Project \u0e40\u0e01\u0e48\u0e32\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49 Log4j 1.x (\u0e16\u0e49\u0e32\u0e21\u0e35) \u0e40\u0e1e\u0e37\u0e48\u0e2d Bridge \u0e44\u0e1b SLF4J
\/\/ implementation ‘org.slf4j:log4j-over-slf4j:2.0.12’<\/p>\n\n\n\n

\/*\n * This file was generated by the Gradle 'init' task.\n *\n * This generated file contains a sample Java application project to get you started.\n * For more details on building Java & JVM projects, please refer to https:\/\/docs.gradle.org\/9.3.1\/userguide\/building_java_projects.html in the Gradle documentation.\n *\/\n\nplugins {\n    \/\/ Apply the application plugin to add support for building a CLI application in Java.\n    id 'application'\n    id(\"com.gradleup.shadow\") version \"9.3.1\"\n}\n\nrepositories {\n    \/\/ Use Maven Central for resolving dependencies.\n    mavenCentral()\n}\n\ndependencies {\n    \/\/ Use JUnit Jupiter for testing.\n    testImplementation libs.junit.jupiter\n\n    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'\n\n    \/\/ This dependency is used by the application.\n    implementation libs.guava\n\n    \/\/ SLF4J API (The Facade)\n    implementation 'org.slf4j:slf4j-api:2.0.12' \n    \n    \/\/ Logback (The Implementation - \u0e23\u0e27\u0e21\u0e16\u0e36\u0e07 Binding)\n    implementation 'ch.qos.logback:logback-classic:1.4.14' \n\n    \/\/ \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a Project \u0e40\u0e01\u0e48\u0e32\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49 Log4j 1.x (\u0e16\u0e49\u0e32\u0e21\u0e35) \u0e40\u0e1e\u0e37\u0e48\u0e2d Bridge \u0e44\u0e1b SLF4J\n    \/\/ implementation 'org.slf4j:log4j-over-slf4j:2.0.12'\n\n}\n\n\/\/ Apply a specific Java toolchain to ease working on different environments.\njava {\n    toolchain {\n        languageVersion = JavaLanguageVersion.of(21)\n    }\n}\n\napplication {\n    \/\/ Define the main class for the application.\n    mainClass = 'com.imm.UmgTest.App'\n}\n\ntasks.named('test') {\n    \/\/ Use JUnit Platform for unit tests.\n    useJUnitPlatform()\n}\n<\/pre>\n\n\n\n
\u0e08\u0e32\u0e01\u0e19\u0e31\u0e49\u0e19 \u0e43\u0e19\u0e2b\u0e49\u0e2d\u0e07 resource \u0e2a\u0e23\u0e49\u0e32\u0e07\u0e44\u0e1f\u0e25\u0e4c logback.xml<\/p>\n\n\n\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<configuration>\n\n    <property name=\"LOG_PATTERN\" \n              value=\"[%d{yyyy-MM-dd HH:mm:ss.SSS}] [%thread] [%X{script.name}] [%X{username}] [%line] [%-5level] [%logger] -> %msg%n\" \/>\n\n    <appender name=\"SIFTING_LOG\" class=\"ch.qos.logback.classic.sift.SiftingAppender\">\n\n        <discriminator>\n            <key>username<\/key>\n            <defaultValue>system<\/defaultValue>\n        <\/discriminator>\n\n        <sift>\n            <appender name=\"FILE-${username}\" class=\"ch.qos.logback.core.rolling.RollingFileAppender\">\n                \n                <file>logs\/${username}\/${username}.log<\/file> \n\n                <rollingPolicy class=\"ch.qos.logback.core.rolling.TimeBasedRollingPolicy\">\n                    <fileNamePattern>logs\/${username}\/archive\/${username}-%d{yyyy-MM-dd}.log<\/fileNamePattern>\n                    <maxHistory>30<\/maxHistory>\n                <\/rollingPolicy>\n\n                <encoder>\n                    <pattern>${LOG_PATTERN}<\/pattern>\n                <\/encoder>\n\n            <\/appender>\n        <\/sift>\n    <\/appender>\n\n    <root level=\"info\">\n        <appender-ref ref=\"SIFTING_LOG\" \/>\n        <\/root>\n\n<\/configuration>\n<\/pre>\n\n\n\n
logs\/${username}\/${username}.log
\u0e0a\u0e37\u0e48\u0e2d log file \u0e16\u0e49\u0e32\u0e44\u0e21\u0e48\u0e01\u0e33\u0e2b\u0e19\u0e14 user \u0e43\u0e14\u0e46 \u0e21\u0e32 \u0e08\u0e30\u0e16\u0e39\u0e01\u0e40\u0e01\u0e47\u0e1a\u0e2d\u0e22\u0e39\u0e48\u0e17\u0e35\u0e48 logs\/system\/system.log<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0e15\u0e31\u0e27\u0e2d\u0e22\u0e48\u0e32\u0e07 logback configuration \u0e40\u0e01\u0e47\u0e1a\u0e44\u0e27\u0e49\u0e17\u0e35\u0e48\u0e2b\u0e49\u0e2d\u0e07 resource \u0e14\u0e49\u0e32\u0e19\u0e19\u0e2d\u0e01\u0e40\u0e25\u0e22<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0e43\u0e19 file code java \u0e02\u0e2d\u0e07\u0e40\u0e23\u0e32 \u0e01\u0e47\u0e40\u0e23\u0e35\u0e22\u0e01\u0e43\u0e0a\u0e49\u0e44\u0e14\u0e49\u0e40\u0e25\u0e22<\/p>\n\n\n\n
private static final Logger logger = LoggerFactory.getLogger(App.class);<\/p>\n\n\n\n
\/*\n * This source file was generated by the Gradle 'init' task\n *\/\npackage com.imm.UmgTest;\n\nimport org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\nimport org.slf4j.MDC;\n\npublic class App {\n    \n    private static final Logger logger = LoggerFactory.getLogger(App.class);\n    \n    public String getGreeting() {\n        logger.info(\"ABC {}, {}, {}\", \"a\", 2, 3);\n        return \"Hello World!\";\n    }\n\n    public static void main(String[] args) {\n        System.out.println(new App().getGreeting());\n    }\n}\n<\/pre>\n\n\n\n
[2026-02-26 14:34:05.905] [main] [] []<\/strong> [17] [INFO ] [com.imm.UmgTest.App] -> ABC a, 2, 3<\/p>\n\n\n\n
\u0e40\u0e23\u0e32\u0e22\u0e31\u0e07\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e40\u0e1e\u0e34\u0e48\u0e21 \u0e15\u0e31\u0e27\u0e41\u0e1b\u0e23 \u0e2b\u0e23\u0e37\u0e2d\u0e04\u0e48\u0e32\u0e40\u0e09\u0e1e\u0e32\u0e30\u0e1a\u0e32\u0e07\u0e2d\u0e22\u0e48\u0e32\u0e07\u0e40\u0e02\u0e49\u0e32\u0e44\u0e1b\u0e43\u0e19 log \u0e44\u0e14\u0e49\u0e14\u0e49\u0e27\u0e22 MDC<\/p>\n\n\n\n
\/*\n * This source file was generated by the Gradle 'init' task\n *\/\npackage com.imm.UmgTest;\n\nimport org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\nimport org.slf4j.MDC;\n\npublic class App {\n    \n    private static final Logger logger = LoggerFactory.getLogger(App.class);\n    \n    public String getGreeting() {\n        MDC.put(\"username\", \"Thada\"); \n        MDC.put(\"script.name\", \"output.drill\"); \n        logger.info(\"ABC {}, {}, {}\", \"a\", 2, 3);\n        MDC.remove(\"script.name\");\n        MDC.remove(\"username\"); \n        return \"Hello World!\";\n    }\n\n    public static void main(String[] args) {\n        System.out.println(new App().getGreeting());\n    }\n}\n<\/pre>\n\n\n\n
[2026-02-26 14:33:01.179] [main] [output.drill] [Thada] <\/strong>[17] [INFO ] [com.imm.UmgTest.App] -> ABC a, 2, 3<\/p>\n\n\n\n
\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e21\u0e35\u0e01\u0e32\u0e23\u0e01\u0e33\u0e2b\u0e19\u0e14 \u0e0a\u0e37\u0e48\u0e2d username \u0e0a\u0e37\u0e48\u0e2d\u0e44\u0e1f\u0e25\u0e4c\u0e41\u0e25\u0e30\u0e15\u0e33\u0e41\u0e2b\u0e19\u0e48\u0e07\u0e01\u0e47\u0e08\u0e30\u0e40\u0e1b\u0e25\u0e35\u0e48\u0e22\u0e19 \u0e08\u0e32\u0e01 logs\/system\/system.log \u0e40\u0e1b\u0e47\u0e19 logs\/Thada\/Thada.log<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
More info \u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a pattern \u0e02\u0e2d\u0e07 log \u0e41\u0e25\u0e30\u0e0a\u0e37\u0e48\u0e2d\u0e44\u0e1f\u0e25\u0e4c
https:\/\/logback.qos.ch\/manual\/layouts.html<\/a>
https:\/\/logback.qos.ch\/manual\/configuration.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
simple project \u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e17\u0e14\u0e25\u0e2d\u0e07\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19 Logback \u0e1a\u0e19 simple log formatter for Java (SLF4J)\u0e42\u0e14\u0e22\u0e2b\u0e25\u0e31\u0e01\u0e01\u0e32\u0e23 \u0e40\u0e2b\u0e21\u0e37\u0e2d\u0e19 SLF4J \u0e40\u0e1b\u0e47\u0e19\u0e21\u0e32\u0e15\u0e23\u0e32\u0e10\u0e32\u0e19 \u0e2a\u0e48\u0e27\u0e19…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-514","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/posts\/514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/comments?post=514"}],"version-history":[{"count":2,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/posts\/514\/revisions"}],"predecessor-version":[{"id":520,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/posts\/514\/revisions\/520"}],"wp:attachment":[{"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/media?parent=514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/categories?post=514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iotnoob.com\/wordpress\/wp-json\/wp\/v2\/tags?post=514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}