asmhatreandClaude Opus 5
644da9e65e
Companion code for "Dockerizing Spring Boot 4: Layered Jars, Buildpacks, Distroless and Image Size Benchmarks". Fat jar on JDK and JRE, layered jar on Debian, Alpine and distroless, jlink, the JDK 25 AOT cache, Paketo buildpacks and Jib, each measured for size on disk and pushed, rebuild delta, startup, user and shell. Also PID 1 and signal handling, the jdeps module gap, AOT cache mismatches and buildpacks memory calculation. Transcripts in docs/output/, regenerated by scripts/run-all.sh. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01C3TETMrqVUWeFkNtz3Jbo3
13 lines
1.0 KiB
Plaintext
13 lines
1.0 KiB
Plaintext
# docker stop sends SIGTERM to PID 1, waits 10 s, then SIGKILL. Exit code 143 = the JVM handled
|
|
# SIGTERM (128+15). 137 = it was killed (128+9).
|
|
|
|
layered-jre PID 1: java -jar application.jar docker stop: 244 ms exit code: 143 graceful-shutdown log lines: 1
|
|
shell-form PID 1: /bin/sh -c java -jar /app/app.jar docker stop: 10160 ms exit code: 137 graceful-shutdown log lines: 0
|
|
shell-form-alpine PID 1: java -jar /app/app.jar docker stop: 219 ms exit code: 143 graceful-shutdown log lines: 1
|
|
shell-form-wrapper PID 1: /bin/sh -c echo "starting revision $(date +%s)" && java -j docker stop: 10176 ms exit code: 137 graceful-shutdown log lines: 0
|
|
layered-distroless PID 1: (image has no cat; ENTRYPOINT is exec form) docker stop: 256 ms exit code: 143 graceful-shutdown log lines: 1
|
|
|
|
# What /bin/sh is in each base image:
|
|
eclipse-temurin:25-jre -> /usr/bin/dash
|
|
eclipse-temurin:25-jre-alpine -> /bin/busybox
|