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• 🔧 Functions
• 👥 Usage
• 🏃 Run Demo
• 🍪 Dependency
• 📚 Related resources

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🔧 Functions

👉 Enable the transmitting Log4j2 ThreadContext(ThreadLocal value) between threads even using thread pooling components by Transmittable ThreadLocal(TTL).

From v1.4+ upgrade to Java 8.
If you need Java 6 support, use version 1.3.x

👥 Usage

Just add this dependency into your project to activate the Log4j2 TTL ThreadContextMap. ✨

🏃 Run Demo

Run Demo Code

./mvnw clean test-compile -Dexec.classpathScope=test -Dexec.mainClass=com.alibaba.ttl.log4j2.Log4j2Demo exec:java

./mvnw clean test-compile -Dexec.classpathScope=test -Dexec.mainClass=com.alibaba.ttl.log4j2.Slf4jMdcDemo exec:java

• Log4j2Demo.java
• Slf4jMdcDemo.java
• TtlThreadContextMap implementation class: TtlThreadContextMap.java.

🍪 Dependency

<!--
    because this dependency is implemented by log4j2 runtime extension
    that will never be used by biz code,
    set scope to *runtime*.
-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>log4j2-ttl-thread-context-map</artifactId>
    <version>1.4.0</version>
    <scope>runtime</scope>
</dependency>

Find up-to-date available versions at search.maven.org.

📚 Related resources

• log4j2 documentation
  • log4j 2 Thread Context
  • Changelog
• Mapped Diagnostic Context (MDC) support - slf4j official documentation
• Transmittable ThreadLocal(TTL), 📌 The missing Java™ std lib(simple & 0-dependency) for framework/middleware, provide an enhanced InheritableThreadLocal that transmits ThreadLocal value between threads even using thread pooling components.