websocket notes

intro
https://en.wikipedia.org/wiki/WebSocket

spring boot + angular 5
https://medium.com/oril/spring-boot-websockets-angular-5-f2f4b1c14cee

backend (spring)
https://spring.io/guides/gs/messaging-stomp-websocket/
https://www.baeldung.com/websockets-spring

frontend: native
https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_client_applications
rxjs native support
https://rxjs-dev.firebaseapp.com/api/webSocket/webSocket
node.js libraries comparison
https://stackoverflow.com/questions/16392260/which-websocket-library-to-use-with-node-js

notes:
* with Neflix OSS series (zuul, hystrix, ...), time out issues/settings need to be set up properly
* retry function supported by some client libs