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Reactive streams demo

This is an example of reactive app.

Events are retrieved from database with Postgres async RX driver. For each event location is retrieved from external API using Netty RX http client, merged and emitted over REST API as json stream.

Frontend with JQuery, Node, Express, React and Oboe shows effects of such approach.

Except performance benefits in real environment of low connectivity, perceived performance is also increased.

How to

Postgres database should be up and running as configured in application.properties

Start the Spring boot backend:

gradle bootRun --info

Start the Node frontend:

node public/app.js

Generate some events:

curl -X POST http://localhost:8080/rest/v1/events?count=5000

Checkout JQuery version on localhost:3000/simple

Checkout React version on localhost:3000/react

TODO

Warm up stream

Handle failures, retries and back-pressure

Fix rending for React table.

Use timestamp instead of date.