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How to work with Apache Kafka in Spring Boot?

by devs5003 - 10

Now-a-days, many modern systems require data to be processed for the targeted purpose as soon as it becomes available. For example, as a developer, if we talk about a Logging or Monitoring system, we often require the data as soon as a problem occurs. In a nutshell, there is a high requirement of faster & robust data delivery. Here, Apache Kafka can be a good option to solve our purpose. In a single line, Apache Kafka acts as a mediator to transmit data between applications that generate data and applications that consume data. Needless to say, we are going to discuss about 'How to work with Apache Kafka in Spring Boot?' here in this topic. If you want to know the

Profiles In Spring Boot

by devs5003 - 4

When we work on a real time project, we maintain multiple environment for the same project. This happens because we use different infrastructures for different stages of the project. There are different useful environments that we maintain before making the project go live, such as: development (DEV), test, user acceptance testing (UAT), production (PROD). These environments are not fixed at all. Some projects may have some more environments or even sometimes less also. It totally depends on the decisions made by stakeholders involved in the specific project and its requirements. Spring Framework offers us to maintain a separate profile for each environment in order to switch over the environments with a minimal effort. Hence, our topic of discussion is 'Profiles In

How to implement JWT Authentication in Spring Boot Project?

by shwetas8536 - 12

No one can deny from the fact that Security is a vital feature of a production ready application. Although we can secure one web application using In-memory authentication, JDBC Authentication or via UserDetailsService. But when one application uses the services of other application internally, then implementation of security with webservices concept becomes important. In this situation we secure our application using a token which has a particular period of validity. In this article, we are going to learn 'How to implement JWT Authentication in Spring Boot Project?' to understand the concept behind JWT(JSON Web Token) Authentication as a whole. As JWT stands for 'JSON Web Token', it is clear that the token holds the data in the form of JSON only. Moreover,

How to read Excel file in Java Spring Boot and upload into Database?

by devs5003 - 8

Many clients provide their data in the form of excel sheet and request developer to save it in your database as it is. If you ever have implemented ‘How to read Excel file in Java Spring Boot and upload into Database?’, it’s good. If not, no worries!, we will learn the same in this article. In the end, you will find it very easy & fast way to get it done. In fact, once you go through the complete article you will observe that you only need to provide the location of your excel file in application.properties file. You will get the data uploaded into database by making small changes in your own entity classes only. We will not promote

Spring Data MongoDB Tutorial

by devs5003 - 0

In today's data-motivated world, it becomes very crucial to manage and query huge volumes of data efficiently for businesses to stay competitive. MongoDB, a popular NoSQL database, offers flexibility and scalability. On the other hand, Spring Data provides a powerful framework for simplifying data management in Java applications. The term 'Spring Data MongoDB' is nothing, but it is a combination of both 'Spring Data' and 'MongoDB'. In simple words, Spring Data MongoDB is a small readymade project provided by Spring community, that simplifies the process of how a Spring based application interacts with MongoDB, a NoSQL database. In this article, we will explore the world of Spring Data MongoDB, investigating its features, benefits, and practical examples to help you utilize its

How to implement Fault Tolerance in Microservices using Resilience4j?

by devs5003 - 6

When we develop an application, especially a Microservices-based applications, there are high chances that we experience some deviations while running it in real time. Sometimes, it could be slow response, network failures, REST call failures, failures due to the high number of requests and much more. In order to tolerate these kinds of suspected faults, we need to incorporate Fault Tolerance mechanism in our application. To achieve it, we will make use of Resilience4j library. Resilience4j is a lightweight, easy-to-use fault tolerance library inspired by  Netflix Hystrix, but designed for Java 8 and functional programming. So, our focus in this article will be on 'How to implement Fault Tolerance in Microservices using Resilience4j?' After implementing the Fault Tolerance in Microservices using Resilience4j,

Spring Boot Cassandra CRUD Examples

by devs5003 - 0

In continuation to Cassandra DB installation, now it's time to discuss about the most important CRUD operations using Cassandra DB. If we are in Software development world, we should at least know ‘How to write CRUD operation on the database front’. Needless to say, how much importance these operations have in an application development. If you are developing any web application in any programming language, you can’t escape from these operations. CRUD is nothing but an abbreviation to Create, Read, Update and Delete. Moreover, development of CRUD operations is expected from all developers. We will learn ‘Spring Boot Cassandra CRUD Examples’ in this article. Software/Technologies Used in the Examples Sometimes a specific version conflicts with another version. In order to avoid such

Spring Batch Example CSV to MySQL: JPA Batch Insert

by devs5003 - 3

Sometimes in real time projects, we need to transfer data from one location to another. If the volume of data is small, we can achieve this by applying any traditional approach. On the other hand, if there is a huge amount of data, we can make use of the Spring Batch API to make the transfer of data faster and performant. In this article 'Spring Batch Example CSV to MySQL Using JPA', we are going to transfer the data from CSV file to MySQL database using Spring Boot Batch. We have already discussed theoretical concepts of Spring Batch in a separate article 'Spring Batch Tutorial'. Now, its time to implement our example 'Spring Batch Example CSV to MySQL Using JPA'. What will

Features Of Spring Boot

by devs5003 - 0

After knowing about 'What is Spring Boot?' in detail in a separate article, it's time to talk about the features of Spring Boot. Needless to say, Spring Boot is full of features, that's why it is being used in the majority of Java projects now-a-days. In this article, we are going to discuss features of Spring Boot in detail. If you are attending any interview of Java/Spring Boot, there are high chances that you may be asked to tell about some important features of Spring Boot. Spring-Boot comes with a lot of handy features that make the developer's life easier. Below are some of the important features of Spring Boot. Features of Spring Boot Spring Boot offers a variety of features that simplify

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