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Spring Apache Kafka Tutorial

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In this Spring Apache Kafka lesson, we will learn how we can get started with Apache Kafka in a Spring Boot project and start producing and consuming messages on the topic of our choice. Apart from a simple project, we will deep dive into Kafka terminologies and how the concept of partitioning works in Kafka. Let’s get started. 1. Introduction With ...

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Secure a Spring Microservices Architecture with Spring Security and OAuth 2.0

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“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. Every developer wants to build faster and more efficiently, to support scale. Building a microservices architecture with Spring can add resilience and elasticity to your architecture that ...

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Spring Security with Spring Boot 2.0: UserDetailsService

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As we have seen on a previous post the username and password for our spring application was configured through environmental variables. This is ok for prototype purposes however in real life scenarios we have to provide another way to make the users eligible to login to the application. To do so we use the UserDetailsService Interface. The user details service ...

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Creating a sturdy backup system

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At Foreach we own a Synology RS815+ to store all our backups. These backups come from different sources in our network such as routers, switches, database servers, web servers, application log files, mail servers, and so on. The Synology NAS makes it really easy to configure file shares and quotas for these backups. However, it lacked a few features:        Monitoring ...

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Automatic save of managed JPA entities outside of transaction

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Repositories and transactions in Spring go hand in hand. All database access in Spring should be run inside a transaction, and you typically have @Transactional somewhere to enforce this. However, this is not always necessary. For example, when using Spring Data your repositories use SimpleJPARepository for CRUD functionality. The SimpleJPARepository uses @Transactional so when you perform CRUD operations, transactions are ...

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Spring Hibernate Tutorial

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1. Introduction In this post, we shall demonstrate how to leverage the power of one of the most popular ORM (object-relational mapping) tool, Hibernate which facilitates the conversion of an object-oriented domain model to a traditional relational database. Hibernate is one of the most popular Java frameworks out there. For this reason we have provided an abundance of tutorials here ...

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