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Module 8

Production & Modern Spring

Ship it, run it, keep it fast.

What separates a demo from a production service: observability with Actuator and Micrometer, structured logging, Java 21 virtual threads for cheap concurrency, GraalVM native images for fast startup, Spring Modulith for a healthy monolith, a first taste of Spring AI, and packaging with Docker.

7 Lessons in this stage1 h 37 min
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Lessons in this stage

  1. 01

    Observability with Actuator

    Intermediate

    Health, metrics, and insight into a running app: Spring Boot Actuator endpoints and Micrometer metrics wired to Prometheus.

    15 min
  2. 02

    Structured Logging

    Intermediate

    Logs machines can read: JSON logging, correlation with trace IDs, and log levels you can change at runtime.

    12 min
  3. 03

    Virtual Threads

    Advanced

    Java 21's Project Loom lets a blocking, readable programming model scale to huge concurrency - and Spring Boot turns it on with one property.

    15 min
  4. 04

    GraalVM Native Images

    Advanced

    Compile a Spring Boot app ahead-of-time into a native binary: millisecond startup and low memory, with the trade-offs that come with it.

    14 min
  5. 05

    Spring Modulith

    Intermediate

    Keep a monolith healthy: express and verify module boundaries in code, so a modular monolith doesn't rot into a big ball of mud.

    13 min
  6. 06

    A Taste of Spring AI

    Intermediate

    Spring AI brings the familiar Spring model to LLMs: a ChatClient, prompts, and structured output - the same patterns, a new capability.

    13 min
  7. 07

    Packaging & Deployment

    Intermediate

    From jar to running container: layered Docker images with buildpacks, the twelve-factor config model, and how a Spring Boot app goes to production.

    15 min

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