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Spring Cloud Essentials

by devs5003 - 0

Whether you are a beginner or an experienced or trying to become a developer in the near future, you must have at least heard about the term Microservices. Undoubtedly, if you are working on it, you must have already had a good experience with it. Moreover, you must also have observed that the term 'Spring Cloud' comes in between while talking about Microservices. Do you know, why so? If you know it's good. If not, let's spare some time going through this article thoroughly. In this article, apart from knowing what is Spring Cloud, you will also get to know what are the features, capabilities and other fundamental concepts of Spring Cloud that are expected from a Microservices developer. Let's start

How to implement AOP in Spring Boot Application?

by shwetas8536 - 4

If you are developing an application in Spring or using Spring Boot, you must have come across the word 'AOP'. It stands for Aspect Oriented programming. Although AOP concept is a bit tough to understand, but undoubtedly it makes the developer's life easy. You will feel it more than easy once you complete this topic 'How to implement AOP in Spring Boot Application?'. In fact terminologies used in AOP concept by definition are very close to each other that makes it a bit tricky to understand effortlessly. However, we will understand all of them with suitable examples respectively. While developing an application you might have observed that there are certain lines of code which appear in every class unknowingly. What will

How to Generate Dynamic PDF Report using Spring Boot?

by devs5003 - 5

Almost every client expects the report of data as it is in the database. The most popular & user-friendly reports are PDF & Excel. Here, in this article, we will learn how to generate dynamic PDF report. We will fetch all values from the database, no hard-coding will be done. Further to escape from hard-coding we will take some of the values from properties file. In this way we don't need to modify the java file in case we have some change requests in future. Let's get into the topic "How to Generate Dynamic PDF Report using Spring Boot?". Here we will use Spring Boot to generate our dynamic PDF. However, you can easily utilize the code from this example to

How to implement Redis Cache in Spring Boot?

by devs5003 - 5

Many a time, we all come to a phase when our application does not perform well as it is expected to. Apart from several other solutions, we also look for a caching technique to make DB calls faster. In order to make it possible, we have Redis Cache technique in place. Redis cache helps us by minimizing the number of network calls while accessing the data from DB. Needless to say, our topic of discussion in this article is 'How to implement Redis Cache in Spring Boot Application?'. Spring Boot supports this feature via the dependency 'Spring Data Redis'. In addition, we need to download Redis Server to make Redis Cache functional in the Spring Boot Application. Moreover, apart from Cache,

Why is Spring framework so popular ?

by devs5003 - 0

We have various frameworks in Java. Spring framework is most popular out of them. Some other commonly used frameworks are Struts, JSF, but Spring has already dominated all of them. Let's understand why is Spring framework so popular ?. At its core, the Spring Framework includes the principles of simplicity, modularity, and loose coupling. It provides developers with a unified programming model that simplifies the complexities of enterprise application development. With its popular dependency injection mechanism, Spring allows the creation of highly modular and testable code. It also makes developers free from the burden of managing complex dependencies manually. Before directly coming to 'Why is Spring Framework so Popular ?', let's first understand the basic terminology 'What is a Framework?'. What is

How to Implement Feign Client in Spring Boot Microservices?

by devs5003 - 9

When two web applications communicate with each other for data exchange, they work on Producer-Consumer technique. An application who produces data is known as a Producer/Provider application. Similarly the one who consumes data is known as Consumer application. As a Java developer, we might be very familiar with REST API for Producer application whereas RestTemplate for Consumer application. With Microservices based application also, two Microservices communicate with each other and follow the Producer-Consumer model. Here, in consumer side, we use a concept 'Feign Client' as a better option instead of RestTemplate in order to minimize our effort of coding. Therefore, our topic of discussion is 'How to Implement Feign Client in Spring Boot Microservices?'. Apart from consuming REST services in an

Java Scheduler: How to Schedule a Job in Java Spring Boot Scheduler

by devs5003 - 45

Sometimes we come across a situation when we expect a task should execute only at a particular point of time or re-execute within a particular time interval. Simultaneously, our client expects a functionality to be executed at a particular time on an hourly basis, daily basis, weekly basis, monthly basis or even some other as well. In fact, in all these types of situations we implement scheduling to get the requirements fulfilled accordingly. For example, one of the most popular implementation is the report generation at a particular time. On the other hand, almost every client expects this functionality to have in the project. Currently the most popular one is the PDF report. Consequently, our topic 'Java Scheduler: How to Schedule

Spring Dependency Injection

by devs5003 - 0

If you are working in a project where spring is being used, you must have heard about the term 'Spring Dependency Injection'. If not, this is the right time to dig into it as much as possible without further delay. Needless to say, Spring dependency Injection is the heart of the whole Spring Framework. I would also suggest you to go through the practical knowledge of it. However, it is also true that someone can't understand the concept of Spring Dependency Injection only having the theoretical knowledge. If you are expecting to learn all the basic and crucial concept behind the Spring Dependency Injection step by step, and if you don't want to revise the concept more than a hundred times

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

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