Tag: Java
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Spring Cloud Gateway with OAuth2 Authorization Server
In this article I will create a Spring Cloud Gateway application connected to an OAuth2 Authorization Server. I will use an existing OAuth2 Authorization server and create a Spring Cloud Gateway application from scratch to consume data from a Resource Server.
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OAuth2 and OpenID Connect
In this article, I will compare the OAuth2 and OpenID Connect authentication protocols. I will implement the OpenID Connect with the Spring Security Authorization Server.
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Spring Cloud Sleuth & Zipkin
In this article I will show how to trace requests between microservices using Spring Cloud Sleuth and Zipkin. Spring Cloud Sleuth will help me identify the logs from a single request between all the microservices. And Zipkin will show me the elapsed times at the microservices.
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Spring Security and Roles Authorization
In this article I will explain the difference between Authentication and Authorization. I will also explain how to implement the Authorization pattern with Spring Security. For that, I will use the @PreAuthorize annotation.
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Spring Batch
In this article I will show how to create a complete Spring Batch project. I will show how to configure a Job and the Steps. I will implement a Step with a reader, processor and Writer. I will implement another Step with a Tasklet.
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The CSRF Protection with Spring Security
In this article I will explain the CSRF attack, the Cross-Site Request Forgery attack. I will show how Spring Security can protect against this attack, in both a server side rendering server and with a separated frontend and the Cookie repository.
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MongoDB with Spring Data
In this article I show how connect a Spring Boot application with MongoDB. I will show how to configure a Spring Boot application to be connected to a single noSQL database as MongoDB. And I will show how to use Spring Data to request a MongoDB database.
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Circuit Breaker: Hystrix vs Resilience4J
In this post I’ll show how to use the Circuit Breaker pattern with Hystrix and with Resilience4J.
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Message Queuing with Apache Kafka and Spring Cloud
In this article I will show how to configure Spring Cloud to publish and read messages from Apache Kafka for the Message Queuing pattern. I will show how to configure Spring Cloud for both the raw Apache Kafka dependency and for the Stream dependency.
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Log4Shell Vulnerability
In this article I show how the Log4Shell vulnerability can impact. I show how the JNDI commands are intercepted with an LDAP server, and how to protect against this vulnerability.
The Dev World - Sergio Lema 