Configure build and start for Spring Boot

Summary

Build and start for a Spring Boot app on Ample. Verified on Spring Boot: the app built and started with the documented commands and answered on its public HTTPS URL. Build and start: ./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT.

Prerequisites

• A Spring Boot project (./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT).
• An Ample account token with servers:write.

Workflow Steps

1. Build and start
   ./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT; the server must bind 0.0.0.0 on PORT.

2. Deploy
   Run the synchronous deploy once and read the result.
   Command: ample deploy . --name --public

3. Verify
   Fetch the live URL on the example; on failure read the build and runtime logs.
   Command: ample logs --kind build

Tested Configuration

• Template: jvm-21
• Runtime: java
• Size: s-1vcpu-2gb
• Build Command: ./mvnw -q -DskipTests package
• Start Command: java -jar $(ls target/*.jar | grep -v -- '-plain' | head -n 1)

Limitations

• Verified on the jvm-21 template at s-1vcpu-2gb; other sizes and Spring Boot major versions are not verified.
• Region, compliance attestations, and request-duration limits are unknown and not claimed.

Cost Estimate

• Currency: USD
• Monthly Amount: 5.0
• Basis: size prices from pricing.toml
• Components:
  • Name: app server
    • Size: s-1vcpu-1gb
    • Quantity: 1.0
    • Monthly Amount: 5.0
• Note: Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

Examples

• Title: Spring Boot pattern fixture
  Description: Verified build and start on Spring Boot.
  Source Ref: tests/deploy-canaries/spring-boot-patterns

Success Checks

• Description: app responds on its public URL
  Kind: http_get
  Path: /
  Expect: ample canary spring boot patterns

Evidence Summary

• Kind: canary_run
  Summary: Spring Boot pattern fixture deployed on Ample (./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT); for this guide: the app built and started with the documented commands and answered on its public HTTPS URL.
  Observed At: 2026-09-21T02:34:39Z
  Implementation Revision: 1d28ae0-dirty (CLI 0.1.21)
  Expires At: 2027-03-20T02:34:39Z