Version Compatibility - Gradle - Java - Kotlin

• Gradle 8.2.1
• Kotlin 1.9.20-Beta2
• JVM 21
• Spring Boot 3.1.0
• Apache Tomcat 10.1.8 or Netty 4.1.92.Final

JVM Options

-server
-Xss1m
-Xms1g
-Xmx1g
-XX:NativeMemoryTracking=detail
-XX:Tier3CompileThreshold=100
-XX:Tier4CompileThreshold=100

비교

• Tomcat + Platform Threads
• Netty + Reactor
• Netty + Kotlin Coroutines
• Tomcat + Virtual Threads

Load Test

Non-GUI mode

$ jmeter -n -t jmeter/JMeter_Config.jmx -l jmeter/jmeter.jtl

Options

• -n: It specifies JMeter is to run in non-gui mode
• -t: Name of JMX file that contains the Test Plan
• -l: Name of JTL(JMeter text logs) file to log results
• -j: Name of JMeter run log file

CPU / Memory

Performance

Threads

참고

• https://youtrack.jetbrains.com/issue/KT-57669
  • Kotlin 1.9.0-Beta 부터 JVM 20 지원

JEP

• JEP 425: Virtual Threads (Preview) (JDK 19)
• JEP 436: Virtual Threads (Second Preview) (JDK 20)
• JEP 444: Virtual Threads (JDK 21)

관련 아티클

• https://spring.io/blog/2022/10/11/embracing-virtual-threads
• https://perfectacle.github.io/2022/12/29/look-over-java-virtual-threads/