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Tag: Postman

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Java Spring Boot

Building Robust API Clients with RestClient in Spring Boot 3.X

October 6, 2025October 6, 2025 Editorial Team

In this post, we’ll explore how to use the RestClient class in Spring Boot 3 to perform GET, POST, PUT, and DELETE operations against REST

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Spring Boot

Simplifying Complex JPA Queries with Hibernate @Formula Annotation

September 22, 2025September 22, 2025 Editorial Team

In this post, we’ll explore how @Formula works, its benefits, common use cases, and best practices. · Prerequisites· Overview∘ What is the Hibernate @Formula Annotation?∘ Why Use @Formula?· Let’s code: Practical Example∘ Basic

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Java Keycloak PostgreSQL

Keycloak Custom SPI and Database Extensions: Adding Your Own Tables 2/2

September 15, 2025September 15, 2025 Editorial Team

In the previous post, we learned the foundation for extending Keycloak with custom database entities and providers. In this post, we’ll explain how to expose the

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Java Spring Boot

Updating Resources in Spring Boot 3: PUT vs PATCH Explained

July 21, 2025October 9, 2025 Editorial Team

In this post, we’ll explore the differences between the PUT and PATCH methods in the context of updating resources in Spring Boot 3. · Prerequisites· Overview∘ Understanding PUT

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Keycloak Spring Boot

Spring Boot 3 — Keycloak Admin Client integration

May 5, 2025July 29, 2025 Editorial Team

In this post, we’ll explain how to integrate the Keycloak Admin Client SDK in a Spring Boot application. · Prerequisites· Overview∘ What is Keycloak Admin Client?∘ When to Use

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Docker HashiCorp Java PostgreSQL Spring Boot

Spring Boot 3 — Manage Secrets using HashiCorp Vault and PostgreSQL as Backend: Part 2

April 29, 2025July 29, 2025 Editorial Team

In the previous post, we had configured a Hashicorp Vault server. In this post, we’ll explain how to manage vault secrets with a Spring Boot application.

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Docker Keycloak

Manage Keycloak using Admin REST API

April 14, 2025July 29, 2025 Editorial Team

This post will explain how to interact with the Keycloak server using REST API without any programming language. · Prerequisites· Overview∘ What is Keycloak?∘ Key Features of Keycloak· Set up

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Java Spring Boot

Spring Boot 3 REST API — Barcode and QR Code Generation

March 25, 2025July 29, 2025 Editorial Team

In this post, we’ll learn how to generate barcodes and QR codes and expose them as an endpoint in the Spring Boot API. · Prerequisites· Overview∘ Barcodes∘ QR Codes· Getting

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PostgreSQL Spring Boot

Using Spring Data JPA with PostgreSQL Views

March 3, 2025July 29, 2025 Editorial Team

In this post, we’ll explore using Spring Data JPA with PostgreSQL views in a Spring Boot application. · Prerequisites· Overview∘ Understanding Database Views∘ Key Benefits of Database Views· Database Setup· Let’s

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Docker Java Spring Boot

Minio Object Store with Spring Boot 3

February 17, 2025July 29, 2025 Editorial Team

In this post, we’ll explore how to integrate MinIO with Spring Boot to perform bucket and object operations to any Amazon S3-compatible object storage service.

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About Me

I have over 10 years of experience in software design, development, and deployment (Software Development life cycle).

Recent Posts

  • Docker Jenkins Keycloak

    Jenkins Single Sign-On (SSO) with Keycloak using OpenID Connect

    November 3, 2025November 3, 2025
  • Java Spring Boot

    Building Robust API Clients with RestClient in Spring Boot 3.X

    October 6, 2025October 6, 2025
  • Spring Boot

    Simplifying Complex JPA Queries with Hibernate @Formula Annotation

    September 22, 2025September 22, 2025
  • Java Keycloak PostgreSQL

    Keycloak Custom SPI and Database Extensions: Adding Your Own Tables 2/2

    September 15, 2025September 15, 2025
  • Java Keycloak PostgreSQL

    Keycloak Custom SPI and Database Extensions: Adding Your Own Tables 1/2

    September 8, 2025September 15, 2025

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