Server Properties File 🔗

You can use .deder/server.properties to specify server properties when the client starts it. Example:

localPath=myprojects/deder/.deder/out/server/assembly/out.jar
testRunnerLocalPath=myprojects/deder/.deder/out/test-runner/assembly/out.jar
logLevel=debug
logRolloverPattern=%d{yyyy-MM-dd-HH}
logMaxHistory=14
logTotalSizeCap=500MB
JAVA_OPTS=-javaagent:otel.jar -Dotel.service.name=my-project -Dotel.exporter.otlp.protocol=grpc -Dotel.exporter.otlp.endpoint=http://localhost:4317

If you make changes to it, make sure you restart the server manually:

deder shutdown
deder version

Available properties:

logLevel - log level used for server log at .deder/logs/server.log, one of ERROR, WARNING, INFO, DEBUG, TRACE
maxInactiveSeconds - max number of seconds server is inactive before it shuts down automatically
JAVA_OPTS - java options passed to server java process
maxConnectSeconds - max number of seconds the client waits for the server to start before giving up. Defaults to 30. Increase this on slow machines or CI environments.
localPath - fixed local path to server JAR, useful for developing Deder and debugging. Note: When using localPath, the global cache is bypassed - the artifact is copied directly without caching. This ensures you're always testing your latest local build.
testRunnerLocalPath - fixed local path to test-runner JAR, useful for developing Deder and debugging. Note: When using testRunnerLocalPath, the global cache is bypassed - the artifact is copied directly without caching.
forkTestFlushIntervalMs - interval in milliseconds for flushing partial test output from forked test JVMs. Setting to 0 disables periodic flushing (output only appears when each test suite completes). Defaults to 1000 (1 second).
taskLockTimeoutSeconds - maximum number of seconds to wait when acquiring a task lock before giving up. If another request is holding the lock (e.g., a long-running compilation), the waiting request will fail with a timeout error instead of blocking indefinitely. Set to 0 to disable (unlimited wait). Defaults to 600 (10 minutes).
cancelGracePeriodMs - milliseconds to wait after setting the cancellation token before forcefully interrupting task threads. Cooperative tasks (like Zinc compilation) have this window to stop themselves cleanly. Set to 0 to disable forceful interruption (cooperative cancellation only). Defaults to 1500 (1.5 seconds).
logRolloverPattern - Logback date pattern for rolled log file naming (see Logback docs). Controls rollover frequency: %d{yyyy-MM-dd-HH} = hourly (default), %d{yyyy-MM-dd} = daily, %d{yyyy-MM-dd_HH-mm} = per-minute, etc. Defaults to %d{yyyy-MM-dd-HH}. The pattern is always placed under .deder/logs/.
logMaxHistory - maximum number of days to retain rolled log files. Defaults to 7.
logTotalSizeCap - maximum total size of all archived log files. Supports KB, MB, GB suffixes. Defaults to 1GB.

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