Pemantauan dengan Spring Boot Actuator
Gunakan titik akhir Spring Boot Actuator untuk memantau, mengelola, dan memeriksa aplikasi Anda di lingkungan produksi.
Pemantauan dengan Spring Boot Actuator adalah pelajaran Spring Boot 4 Complete Guide gratis di CoddyKit. Ini adalah pelajaran 2 dari 4. Kamu bisa membaca pelajaran lengkapnya di bawah secara gratis — lalu praktikkan langsung di browser dengan editor kode bawaan dan tutor AI 24/7. Ini adalah bagian dari jalur belajar Spring Boot 4 Complete Guide, dan progresmu tersinkronisasi di web dan aplikasi CoddyKit. Kursus Spring Boot 4 Complete Guide mencakup 4 pelajaran total.
Bagian dari pelajaran ini belum diterjemahkan dan ditampilkan dalam bahasa Inggris.
Meet Spring Boot Actuator
Spring Boot Actuator is a powerful tool that helps you monitor and manage your application when it's running in production. Think of it as your app's built-in dashboard!
It provides production-ready features without requiring you to write much code.
- Monitoring: Check health, metrics, and environment details.
- Management: Log levels, shutdown, refresh context.
- Insight: Understand your app's internal workings.
Include Actuator in Your Project
To use Actuator, you just need to add its starter dependency to your project. This brings in all the necessary libraries.
For Maven, add this to your pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>Discover Actuator's Endpoints
Once Actuator is added, your application automatically exposes several "endpoints". These are HTTP URLs that provide specific information about your running app.
Some default endpoints include:
/actuator/health: Shows application health status./actuator/info: Displays general application information./actuator/metrics: Provides detailed metrics (CPU, memory, etc.).
By default, only /health and /info are exposed via web.
Run & Access Actuator
Let's create a simple Spring Boot app with Actuator. After running it, you can access the default endpoints in your browser or with a tool like curl.
Try running this and then navigate to http://localhost:8080/actuator/health.
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ActuatorDemoApplication {
public static void main(String[] args) {
SpringApplication.run(ActuatorDemoApplication.class, args);
}
}Deep Dive: The /health Endpoint
The /actuator/health endpoint is crucial for understanding your application's operational status. It aggregates information from various "health indicators".
- DiskSpace: Checks available disk space.
- DataSource: Verifies database connectivity (if configured).
- Liveness/Readiness: For Kubernetes deployments (newer versions).
It typically returns {"status": "UP"} if everything is fine, or details if something is down.
Custom Info with /info
The /actuator/info endpoint provides general information about your application. By default, it's empty, but you can easily populate it with useful details.
Add custom properties to your application.properties or application.yml:
info.app.name=MyActuatorApp
info.app.version=1.0.0
info.app.description=A demo for CoddyKitConfigure & Expose More Endpoints
By default, only /health and /info are exposed over the web. You can expose more endpoints like /beans (list all Spring beans) or /env (environment properties).
To expose all endpoints, add this to application.properties:
management.endpoints.web.exposure.include=*Monitor Performance with /metrics
The /actuator/metrics endpoint is invaluable for performance monitoring. It exposes various metrics about your application, JVM, and system.
Examples of metrics:
jvm.memory.used: Current JVM memory usage.system.cpu.usage: System CPU load.http.server.requests: Details about incoming HTTP requests.
You can query specific metrics like /actuator/metrics/jvm.memory.used for detailed data.
Build Your Own Health Checks
You can create custom health indicators to check the status of specific parts of your application, like an external service dependency or a custom cache.
Implement the HealthIndicator interface:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Component;
@SpringBootApplication
public class CustomHealthApp {
public static void main(String[] args) {
SpringApplication.run(CustomHealthApp.class, args);
}
}
@Component
class MyCustomHealthIndicator implements HealthIndicator {
@Override
public Health health() {
// Simulate checking an external service
boolean serviceIsUp = Math.random() > 0.5; // Randomly up or down
if (serviceIsUp) {
return Health.up().withDetail("myServiceStatus", "OK").build();
} else {
return Health.down().withDetail("myServiceStatus", "Failed").build();
}
}
}Quick Check: Actuator Endpoints
Which of the following Actuator endpoints are exposed by default over the web in a basic Spring Boot application with the Actuator dependency?
Actuator: Your App's Best Friend
Congratulations! You've learned how Spring Boot Actuator transforms your application into a production-ready, observable service.
- It provides crucial insights into your app's health and performance.
- You can easily add it with a single dependency.
- Default endpoints like
/healthand/infoare automatically available. - You can expose more endpoints and even create custom health checks.
Actuator is a must-have for any serious Spring Boot application!
Pertanyaan yang Sering Diajukan
Apakah pelajaran “Pemantauan dengan Spring Boot Actuator” gratis?
Ya — teks lengkap “Pemantauan dengan Spring Boot Actuator” gratis dibaca di sini di web. Untuk praktiknya secara interaktif (editor kode bawaan dan tutor AI 24/7) dan buka sisa kursus Spring Boot 4 Complete Guide, upgrade ke CoddyKit PRO. Kursus Spring Boot 4 Complete Guide mencakup 4 pelajaran total.
Apa yang akan aku pelajari di “Pemantauan dengan Spring Boot Actuator”?
Gunakan titik akhir Spring Boot Actuator untuk memantau, mengelola, dan memeriksa aplikasi Anda di lingkungan produksi. Kamu berlatih Spring Boot 4 Complete Guide dengan kode praktik yang langsung kamu jalankan di browser, dan tutor AI 24/7 menjawab pertanyaanmu saat kamu mengerjakan pelajaran ini.
Apakah aku perlu pengalaman untuk memulai Spring Boot 4 Complete Guide?
Tidak diperlukan pengalaman sebelumnya. Spring Boot 4 Complete Guide di CoddyKit dirancang untuk pemula hingga pelajar tingkat lanjut, jadi kamu bisa memulai di sini atau dari awal dan belajar sesuai kecepatan kamu sendiri. Ini adalah pelajaran 2 dari 4.
Berapa lama pelajaran “Pemantauan dengan Spring Boot Actuator” memakan waktu?
Sebagian besar pelajaran CoddyKit memakan waktu sekitar 5–10 menit. Setiap pelajaran ringkas dan interaktif, jadi kamu membuat kemajuan stabil dan melanjutkan dari tempat kamu tinggalkan di web dan aplikasi.
Bisakah aku menulis dan menjalankan kode dalam pelajaran Spring Boot 4 Complete Guide ini?
Ya. Setiap pelajaran Spring Boot 4 Complete Guide menyertakan editor kode bawaan, jadi kamu menulis dan menjalankan kode nyata langsung di browser dan mendapatkan umpan balik AI instan — tidak diperlukan penyiapan lokal.
Semua pelajaran dalam kursus ini
- Membuat Aplikasi Spring Boot Menjadi Kontainer Docker
- Pemantauan dengan Spring Boot Actuator
- Strategi Penerapan ke Cloud
- Membangun Pipeline CI/CD untuk Spring Boot