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Spring Boot Composite Key Example

Welcome, in this tutorial, we will see how to implement a composite key in a spring boot application. We will use the @Embeddable and @EmbeddedId annotations. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot and Lombok. 1.1 Spring Boot Spring boot is a module that provides rapid ...

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Java Keywords Tutorial

1. Introduction In this article, we will look at words Java considers as Keywords. We will explore why they are used and what they are along with some usage examples. 2. What is a Keyword in Java and why do we need them? The Java Compiler uses some reserved words called Keywords to compile and run Java Programs. Each reserved ...

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Java Thread Dump

In this article, we’re going to see a thread dump in Java. What are the tools available to analyze and make our own code to do that? 1. Introduction A thread dump is a snapshot of the state of all the threads of a Java process. Also, it reveals information about an application’s thread activity that can help us diagnose ...

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Spring Boot Method-Level Security

Welcome, in this tutorial, we will see how to implement method-level security in a spring boot application. We will use the @PreAuthorize annotation to handle the method-level security and will also understand the difference between @Secured and @PreAuthorize annotations. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot ...

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Splunk Basic Search Example

1. Introduction Splunk Web Interface provides typeahead, context-aware, time range picker, and search history to assist searching. In this example, I will show three types of basic searches. via the Web Interfacewith Search Processing Languagefrom Extracted Fields 2. Technologies Used The example in this article was built and run using: Docker 19.03.8Splunk 8.1.1Google Chrome 87.0.4280.88 Please reference my other article ...

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How to Run MySQL and phpMyAdmin Using Docker

In this article, we will learn how to deploy MySQL and phpMyAdmin using Docker. 1. Introduction A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. A Docker container image is a lightweight, standalone, executable package of software that includes everything ...

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SQL Subquery – Nested Query in SQL

1. Introduction In this article, we will look at many examples of how to use SQL subquery using MySQL RDBMS. 2. What is the SQL Subquery? A subquery is also called a Nested Query. A Subquery is a Select Query inside another query. Subqueries can be used inside other select, insert, update and delete commands. It can also be used ...

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Internationalization in Spring Boot

Welcome, in this tutorial, we will see how to implement internationalization in a spring boot application where a single application can support multiple languages like English, French, German, etc. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot. 1.1 Spring Boot Spring boot is a module that provides ...

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Spring Boot Download CSV File Example

Welcome, in this tutorial, we will see how to download a CSV file in a spring boot application. We will use the postman tool to view the CSV data however you are free to enhance by adding a simple HTML page containing a link to download the CSV. 1. Introduction Before going further in this tutorial, we will look at ...

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DevOps Interview Questions and Answers

In this article, we will take an overview of the most important DevOps interview questions and answers from basics to advance. Interview questions are very different from online certification exams. In the interview, skills are tested by asking concepts, experiences with tools, scenarios, benefits, issues, and lifecycle related queries. This article outlines DevOps concepts in detail. The questions which will ...

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