Ankur Mhatre
958b401f0f
Adds spring-boot-startup-time/, the companion project for BLOG-618: a runnable Spring Boot 4.1.1 application on JDK 25 that installs BufferingApplicationStartup and FlightRecorderApplicationStartup behind a system property, and a /diag/startup endpoint that computes step self time -- the number /actuator/startup does not give you and the one that names the actual culprits. Captured under docs/output/: the step tree sorted both ways, the same startup as JFR events, a +5000-class experiment putting 0.11 ms per scanned class on the classpath scan tax, the silent truncation a 2048-step buffer performs, and JDK 25 AOT cache timings (6.93 s to 4.82 s). Post body and metadata live in post/. Moves the existing Actuator project into actuator-in-production/ so the repository holds one directory per article; the root README is now an index.
23 lines
1.1 KiB
Bash
Executable File
23 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# What Actuator exposes when you add the starter and configure nothing.
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set -uo pipefail
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cd "$(dirname "$0")/.."
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OUT=docs/output/01-default-exposure.txt
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{
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echo "### Spring Boot Actuator, starter added, ZERO management.* configuration"
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echo
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echo "\$ curl -s -u ops:ops-password http://localhost:8080/actuator"
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curl -s -u ops:ops-password http://localhost:8080/actuator | python3 -m json.tool
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echo
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echo "\$ curl -s -o /dev/null -w '%{http_code}' -u ops:ops-password http://localhost:8080/actuator/env"
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curl -s -o /dev/null -w '%{http_code}\n' -u ops:ops-password http://localhost:8080/actuator/env
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echo " 404 = discovered but NOT exposed over HTTP. Exposure and existence are different things."
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echo
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echo "\$ curl -s -u ops:ops-password http://localhost:8080/actuator/health"
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curl -s -u ops:ops-password http://localhost:8080/actuator/health | python3 -m json.tool
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echo
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echo " Only 'health' is web-exposed by default. show-details defaults to 'never', so even an"
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echo " authenticated caller sees a bare status until you say otherwise."
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} > "$OUT" 2>&1
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echo "wrote $OUT"
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