Spring

Spring Cloud Circuit Breaker Using Resilience4j | Assume person A went to withdraw cash from the ATM, the amount was deducted but money was not given. He files a complaint about it. Similarly, person B also went to the ATM, the amount was deducted but the money was not given. The same happens to multiple […]

Spring Boot Security | Security is applied through the JAAS concept. JAAS understands Java Authentication and Authorization. What is Authentication and Authorization? Authentication: Read usernames/passwords, and validate them.Authorization: Role management. Example:- Bank Application. All people have to login through username/password to use the application, this process is called Authentication. Application has different types of roles

Spring Boot REST Security using JWT | We will use Spring Security and JWT to generate the token and access the different URLs. Different Stages:- GitHub Project URL:- SpringSecurityJWTMySQL 1. User/Client Register Process Model: User (id, name, username, password, roles) The client must send the above details in JSON format, which will be converted into

Spring Boot Core Introduction | Our Project is called a Child Project. This is connected to the parent Project (Spring Boot). We can create our Project using either Maven or Gradle. Spring Boot Application must have 3 types of files. Those are: Starter class / Main class / Entry class/ Bootstrap class:- This class behaves

Spring Cloud Gateway with Eureka Service Registry Example in Spring Boot | Generally we develop multiple microservices. Those microservices will be running at multiple locations, multiple instances are created and that will have multiple IP addresses and port numbers. We can’t give those all IP addresses and port numbers to the frontend application or clients.

Spring Boot Integration with Apache Kafka | Let us an application example for Spring Boot integration with Apache Kafka. Apache Kafka – API Details Apache has provided one API to work with Kafka EcoSystem i.e. known as ‘Apache Kafka API — [org.apache.kafka]’. The groupId is used for multiple consumers to replicate data. We can provide

Apache ActiveMQ Spring Boot Example | We have seen what is message queue and the types of communication (P2P & Pub/Sub). See more:- Message Queues Using Spring Boot. Let us see the Spring Boot Message queues example using Apache ActiveMQ. ActiveMQ Setup Username: adminPassword: admin For username & password, Check \apache-activemq-5.18.5\conf\users.properties file. There we can

Message Queues Using Spring Boot | Message Queues:- Create a communication link between two applications for continuous data flow. For example, in any food delivery application, we can see the delivery person’s current location through continuous data flow. This is not webservices concept, the consumer will never make any requests, even will not even send

Spring Boot Actuator with Admin Server | Actuator: Production Ready Endpoints (Readymade services). If one application is developed and placed in production then we need a few additional services. Example (additional services):- These additional services can be added to our project without writing explicit code. For this, we can use an Actuator. It is a