Java-Spring-CRQS-Eventsourcing-Microservice
Spring Data JPA
| Java-Spring-CRQS-Eventsourcing-Microservice | Spring Data JPA | |
|---|---|---|
| 1 | 21 | |
| 99 | 2,898 | |
| - | 0.9% | |
| 0.0 | 9.1 | |
| about 2 years ago | 7 days ago | |
| Java | Java | |
| - | Apache License 2.0 |
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Java-Spring-CRQS-Eventsourcing-Microservice
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Java Spring EventSourcing and CQRS Clean Architecture microservice 👋⚡️💫
Source code you can find in GitHub repository The main idea of this project is the implementation of Event Sourcing and CQRS using Java, Spring and EventStore using Postgresql, previously have written same article where implemented the same using Go and EventStoreDB, think EventStoreDB is the best choice for event sourcing, but in real life at some projects we usually have business restrictions and for example usage of the EventStoreDB can be not allowed, in this case think postgres and kafka is good alternative for implementing our own event store. Didn't write in this article about Event Sourcing and CQRS patterns,th e best place to read is microservices.io, blog and documentation of this article is very good too, and as written in previous article, highly recommend Alexey Zimarev "Hands-on Domain-Driven Design with .NET Core" book and also his blog.
Spring Data JPA
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How to Store Spring Boot Application Metrics in InfluxDB
Please note: The H2 database was chosen for simplicity. You can replace it with any other database technology and use the Spring Boot JPA to connect. The demo application will still work.
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How to write a native query in spring boot jpa(postgres) which has "where in" check on composite columns?
What you are trying to do is not supported in JPA/JPQL or Spring Data (see here) Not even all databases support that syntax as far as I'm aware. You either need to concat the columns or add functionality to do this yourself, perhaps a Hibernate UserType will work.
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What does @Transactional keep you from needing to call .save()?
There was also a discussion in the Spring Data JPA project repo surrounding the documentation as well: https://github.com/spring-projects/spring-data-jpa/issues/2055
- Multiple Datasources in an application
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The best way to use Spring Data query methods
There is a small typo on the second issue, I have tried opening a PR myself to fix it https://github.com/spring-projects/spring-data-jpa/pull/2869. I hope i haven't messed up something lol.
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Build a Simple CRUD App with Spring Boot and Vue.js
data-jpa: Spring Data JPA, makes it easy to create JPA-based repositories
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Spring Boot GraphQL API example
This repository is an example application for the Spring Boot framework that employs the Netflix DGS framework to expose a GraphQL API and that interacts with a PostgreSQL DBMS via Spring Data JPA.
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Spring Boot – Black Box Testing
I'm using Spring Data JPA as a persistence framework. Therefore, those classes are Hibernate entities.
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QueryDSL and/or CriteriaAPI with multi-Joins on properties to Sort, Filter and Paging not working
By two different former developers, one from QueryDSL and the other RSQL JPA Spec (Criteria API), both mention that it is a Java issue mentioned here (since 2015...): https://github.com/spring-projects/spring-data-jpa/issues/1115
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How do access sql through java in the real world?
If you go with hibernate note that there are a few different ways to use it. It can be used standalone and it can be used as a JPA implementation. If you use Spring and use hibernate as a JPA implementation then a popular Spring data layer abstraction is Spring Data which has JPA support with its Spring Data JPA library (https://spring.io/projects/spring-data-jpa)
What are some alternatives?
hibernate-validator - Hibernate Validator - Jakarta Bean Validation Reference Implementation
MyBatis - MyBatis SQL mapper framework for Java
banking-service - A simple Java/Spring based banking application created using DDD(Domain Driven Design), Event Sourcing & CQRS. The project uses a combination of postgres and kafka as an event store
JDBI - The Jdbi library provides convenient, idiomatic access to relational databases in Java and other JVM technologies such as Kotlin, Clojure or Scala.
Resilience-Patterns - Explaining and Implementing Resilience patterns in Microservice Architecture
jOOQ - jOOQ is the best way to write SQL in Java
postgresql-event-sourcing - A reference implementation of an event-sourced system that uses PostgreSQL as an event store built with Spring Boot. Fork the repository and use it as a template for your projects. Or clone the repository and run end-to-end tests to see how everything works together.
spring-data-r2dbc - Provide support to increase developer productivity in Java when using Reactive Relational Database Connectivity. Uses familiar Spring concepts such as a DatabaseClient for core API usage and lightweight repository style data access.
cqrs-example - Spring Boot CQRS Example (Docker, Apache Kafka, Zookeeper, MYSQL, MongoDB)
Hibernate - Hibernate's core Object/Relational Mapping functionality
currencyexchange - Currency Exchange API for Spring Boot
Apache Cayenne - Mirror of Apache Cayenne