Real-Time

How do you do stuff like realtime updates, push changes from server to clients?

Websockets

Sockets.io

  • Create a sustained connection that both sides listen to

  • Remove work of constantly doing a handshake, creating a connection, and sending headers

Polling

Client requests updates from server on schedule

Long polling / Server-Sent Events

The client asks for info and the server keeps the connection open until a response, uses the EventSource API

Kafka

Heavy duty producer consumer relationship

All these producers publish to kafka to their own or a common stream, and all these consumers can subscribe to the data streams

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