Boost Java Spring Boot Performance with Mica-Log4j2’s Asynchronous Logging

Feature Introduction

Separate log configurations for environments dev, test, ontest, prod.

High‑performance asynchronous logging based on Disruptor.

In non‑dev environments, replace System.out and System.err with log calls to improve performance.

Dependency Coordinates

Maven

<code>&lt;dependency&gt;
    &lt;groupId&gt;net.dreamlu&lt;/groupId&gt;
    &lt;artifactId&gt;mica-log4j2&lt;/artifactId&gt;
&lt;/dependency&gt;
</code>

Gradle

<code>implementation "net.dreamlu:mica-log4j2"</code>

System Configuration

Configuration item LOGGING_PATH defaults to the directory next to the JAR; it specifies the log directory and reads the system environment variable.

Rules

Logs are written to

info.log

and

error.log

respectively.

Note: In Spring Boot Admin monitoring, the default displayed file is

info.log

.

Custom Log Level

<code>logging:
  level:
    org.xxx.xxx: error
</code>

Custom Log Configuration

Place each environment’s log configuration under

resources/log

:

<code>resources
    └── log
        ├── log4j2_dev.xml
        ├── log4j2_ontest.xml
        ├── log4j2_prod.xml
        └── log4j2_test.xml
</code>

Open Source Recommendations

Spring Boot microservice toolkit – Mica: https://gitee.com/596392912/mica

pig

– powerful microservice framework: https://gitee.com/log4j/pig

SpringBlade

– complete production solution: https://gitee.com/smallc/SpringBlade

Join the “如梦技术” Spring QQ group 479710041 for more information.