Delta Lake Introduction

Delta Lake is an open-source storage layer that brings reliability, performance, and ACID (Atomicity, Consistency, Isolation, Durability) transactions to data…

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Understanding Configuration Order in Spring Boot

Spring Boot simplifies application setup by providing a structured and opinionated configuration model. As applications evolve across different environments, it…

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Feign HTTP GET Request Body Example

Feign is a declarative HTTP client in the Spring ecosystem that simplifies calling external APIs. While Feign makes it easy…

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Apache Spark Join DataFrames Java Example

In modern data engineering pipelines, applications often need to combine multiple datasets that share the same schema. Apache Spark provides…

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How to Bind Custom Validation Message in Spring

Validation is an essential aspect of any application that handles user input. Spring Boot provides a validation framework that integrates…

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IntelliJ Aqua Retrospective: Lessons from JetBrains’ Dedicated Test Automation IDE

In the evolving landscape of software quality assurance, JetBrains introduced Aqua as a groundbreaking solution designed specifically for test automation…

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Sending POST Data to Websites with Jsoup in Java

Posting data to websites—such as submitting login forms, sending API requests, or interacting with web systems—is a common requirement in…

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HTTP Client From OpenAPI Spec And Spring Boot Example

1. Introduction OpenAPI ( formerly Swagger) provides a standard way to describe Rest APIs and OpenAPI Generator tool to generate…

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Guide to Logging in Java Jersey Applications

Logging is a critical part of any production-ready RESTful service. It helps us trace requests, debug issues, and monitor performance.…

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