Spring Boot Actuator: The Next Level Secrets They Don’t Talk About

Because “health” and “metrics” are just the tip of the observability iceberg

Vivek D

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1 day ago

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Read Part 1 here:

You’ve already unlocked the first layer of hidden gems in Spring Boot Actuator — the kind that makes you look smart during production incidents.

Let’s go treasure hunting again.

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1. The /conditions Endpoint: Why Did (or Didn’t) That Auto-Configuration Load?

Spring Boot’s auto-configuration is magical — until it’s not. The /conditions endpoint tells you exactly which auto-configurations matched and which didn’t, and why.

curl 'http://localhost:8080/actuator/conditions'

You get detailed explanations:

{
  "contexts": {
    "application": {
      "positiveMatches": {
        "DataSourceAutoConfiguration": [{
          "condition": "OnClassCondition",
          "message": "@ConditionalOnClass found…