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.
107 lines
3.0 KiB
Plaintext
107 lines
3.0 KiB
Plaintext
### profile: secured (SecuredActuatorConfig + application-secured.yaml)
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### exposure is "*" - the security chain, not the exposure list, is what protects it
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ANONYMOUS
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GET /actuator/health 503
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GET /actuator/info 200
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GET /actuator/env 401
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GET /actuator/beans 401
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GET /actuator/threaddump 401
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GET /actuator (the links index) 401
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AUTHENTICATED as ops (ROLE_ACTUATOR)
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GET /actuator/health 503
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GET /actuator/env 200
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GET /actuator/beans 200
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GET /actuator/threaddump 200
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WRONG PASSWORD
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GET /actuator/env 401
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--- health body, anonymous (show-details: when-authorized) ---
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{
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"groups": [
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"liveness",
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"readiness"
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],
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"status": "DOWN"
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}
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--- health body, authenticated as ROLE_ACTUATOR ---
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{
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"components": {
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"db": {
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"details": {
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"database": "H2",
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"validationQuery": "isValid()"
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},
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"status": "UP"
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},
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"diskSpace": {
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"details": {
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"total": 10213466112,
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"free": 3877920768,
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"threshold": 10485760,
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"path": "/tmp/work/spring-boot-demo/.",
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"exists": true
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},
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"status": "UP"
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},
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"externalApi": {
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"details": {
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"url": "http://localhost:8080/stub/upstream/ping",
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"response": "pong",
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"latencyMs": 4,
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"timeoutMs": 750
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},
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"status": "UP"
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},
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"kafka": {
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"details": {
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"bootstrap": "localhost:9092",
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"tuned": true,
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"error": "TimeoutException: Timed out waiting for a node assignment. Call: listNodes",
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"probeMs": 1500,
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"budgetMs": 1500
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},
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"status": "DOWN"
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},
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"livenessState": {
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"status": "UP"
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},
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"ordersDatabase": {
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"details": {
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"orders": 3,
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"queryMs": 0,
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"slowThresholdMs": 250
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},
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"status": "UP"
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},
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"ping": {
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"status": "UP"
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},
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"readinessState": {
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"status": "UP"
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},
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"ssl": {
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"details": {
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"expiringChains": [],
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"invalidChains": [],
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"validChains": []
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},
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"status": "UP"
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}
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},
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"groups": [
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"liveness",
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"readiness"
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],
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"status": "DOWN"
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}
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Same endpoint, same status code, different body. An anonymous prober learns that the
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service is unhealthy but not WHICH dependency is unhealthy.
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--- the business endpoint is untouched by the actuator chain ---
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GET /orders/count (anonymous) 200
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