1. Create CloudSQL Postgres and connect to it using CloudSQLProxy and CloudCLI(CloudSDK)

Java I/O File Handling - Locating the Resource: File (Java IO) vs Path (Java NIO2)

@ConfigurationProperties: Application Properties in Spring Boot 3 - Properties/Constructor Binding

External Properties in Spring Boot 3 @ConfigurationProperties, @Value, Environment

Spring Retry & RestClient (Part 2): Custom HTTP Exceptions, Error Handlers, JDK/Apache HttpClients

Spring Retry & RestClient (Part 1): Getting Started with Spring Retry - A Stateless Declarative way

RestClient in Spring Boot 3 - Builder, Timeout, Interceptor, RequestFactory

RestClient/RestTemplate Calls to a Self-Signed HTTPS Spring Boot + Enable SSL Client Authentication

Enable HTTPS for Spring Boot App by Spring SSL Bundles + OpenSSL (Self-Signed Certificate)

3. Spring Security: Security Filter - Register a Custom SecurityFilter into a SecurityFilterChain

2. Spring Security: High-Level Arch - DelegatingFilterProxy, FilterChainProxy, SecurityFilterChain

1. Spring Security: Servlet Filter - Demystifying the Security Servlet Stack based Application

12. OpenTelemetry x Kafka: Spring for Apache Kafka + Spring Boot 3 Automatically Instrumented

11. OpenTelemetry x GraalVM Native Image: Native Compile and Build Native Docker Image (AMD, ARM)

10. OpenTelemetry x GraalVM Native Image: Automatically Instrument by Otel Spring Boot Starter

9. OpenTelemetry (metrics): Spring Boot 3 + Java Agent — Collector — Prometheus Exemplars — Grafana

8. OpenTelemetry (traces): Spring Boot 3 + Java Agent — Otel Collector — Jaeger — Zipkin — Tempo

7. Observability Coordinated: Prometheus Exemplars (Metrics) — Grafana Tempo (Traces) — Loki (Logs)

6. OpenTelemetry (logs): Spring Boot 3 + OpenTelemetry Java Agent — Otel Collector — Loki

Google Gemini + Spring Boot 3 (Java): Interactive Chat Prompt Requests

Google Gemini + Spring Boot 3 (Java): Multimodal Prompt Requests

5. OpenTelemetry (metrics): Spring Boot 3 + OpenTelemetry Java Agent -- Prometheus -- Grafana

4. OpenTelemetry (traces): Spring Boot 3 + OpenTelemetry Java Agent -- Zipkin

3. OpenTelemetry: Containerize Auto Instrumented Spring Boot using Google Jib (without Dockerfile)

2. OpenTelemetry (traces): PostgresQL -- Spring Boot 3 + OpenTelemetry Java Agent -- Jaeger