The configuration parameters given here must be seen as a guideline. This list is not necessarily complete and should be revised for every installation. The best configuration for your enviroment may differ from those depicted here. In case of doubts about certain configuration parameters, contact Subshell.
Java Version
Sophora 6 supports Java 21. We recommend using the latest version of OpenJDK 21. Our latest Docker images are based on docker.io/azul/zulu-openjdk-alpine for Java 21.
PostgreSQL Version
Sophora 6 requires at least PostgreSQL 17.6. We recommend to use the latest PostgreSQL version.
Recommended Java VM Arguments in Container Environments (Java 21)
-XX:InitialRAMPercentage=50.0
-XX:MaxRAMPercentage=80.0
-XX:+UseG1GC
-XX:+ExitOnOutOfMemoryError
-XX:+AlwaysPreTouch
-XX:+PerfDisableSharedMem
-XX:+ParallelRefProcEnabled
-XX:G1HeapRegionSize=8m
-XX:MaxGCPauseMillis=250
-XX:InitiatingHeapOccupancyPercent=75
The optimal Java Garbage Collection parameters depend heavily on your specific environment:
- CPU resources
- Memory resources
- Java version
- Use case (e.g., number of concurrent users and reads/writes)
Kubernetes
For Kubernetes deployments, we highly recommend the Sophora Server Helm Chart. It simplifies setup by bundling all best-practice configurations and adds additional features like automatic cluster switching.
