A developer sets spring.datasource.url in application.yml but the app uses a different database URL at runtime. What should be checked first?

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Spring Boot - Application Configuration

A developer sets spring.datasource.url in application.yml but the app uses a different database URL at runtime. What should be checked first?

AIf the database server is running

BIf the YAML syntax is invalid

CIf the property is set in application.properties

DIf an environment variable overrides the property

Step-by-Step Solution

Solution:

Step 1: Understand configuration precedence
Environment variables override properties in YAML or properties files.
Step 2: Identify likely cause of override
If app uses different URL, environment variable probably overrides the YAML setting.
Final Answer:
If an environment variable overrides the property -> Option D
Quick Check:
Env vars override YAML properties [OK]

Quick Trick: Check environment variables for overrides first [OK]

Common Mistakes:

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