https://github.com/nmervaillie/sdnclustersample

A project demonstrating a setup of a Spring Data Neo4j for a Neo4j causal cluster
https://github.com/nmervaillie/sdnclustersample

clustering neo4j spring spring-boot spring-data-neo4j

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A project demonstrating a setup of a Spring Data Neo4j for a Neo4j causal cluster

• Host: GitHub
• URL: https://github.com/nmervaillie/sdnclustersample
• Owner: nmervaillie
• Created: 2017-09-29T00:42:36.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-09-30T16:01:07.000Z (over 7 years ago)
• Last Synced: 2024-11-18T13:57:30.226Z (2 months ago)
• Topics: clustering, neo4j, spring, spring-boot, spring-data-neo4j
• Language: Java
• Size: 8.79 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
This project illustrates some setup and practices when using Spring boot and Spring Data Neo4j with a causal cluster.

This includes:

* The use of multiple URIs for initial connection on core members of the cluster

* The read only transactions that allow routing requests to replica servers

* Setup of detection of stale connections through connection testing

* Application level retry mechanisms (see comments in UserService)

More detail is available in the [documentation](http://neo4j.com/docs/ogm-manual/current/reference/#reference:ha).

There are REST 2 endpoints:

* `GET /users` : retrieves users using a read only transaction, hitting replica servers if they are available instead of core servers.

* `POST /users` : creates a user. Retry the operation if the cluster in not available. Check the notes in `UserController` for additional info.

To run the example :

- start a cluster (see the script `start-neo-cluster.sh` : it starts a cluster with docker)

- run the spring boot application as usual