WebSockets, Server Sent Events, LongPolling, WebRTC, WebTransport, let's explain. They're technologies helping us deal with a big challenge: communicating updates from your server to a front-end client like a phone or web browser. Often, we want to share updates directly to devices, which don't know when updates are coming.
Normally, we could use short polling, where the device continuously asks the server if there's new data. But this method is inefficient as most times, there's no new info. So, it's better to have a protocol that lets us send changes directly to the device without it having to constantly ask the server.
Let's look at choices like WebSockets, Server Sent Events, LongPolling, WebRTC, and WebTransport. For example, you might need to transmit changes from your server or database to other users. Several protocols can do this, but choosing depends on the situation.
You could let a provider like PubNub choose the protocol for your device, based on the use case, ensuring the best connectivity to your end target devices. Protocols like WebSockets, WebRTC, and WebTransport might face issues with firewalls or corporate rules. On the other hand, Server Sent Events and Long Polling have high compatibility due to their standard HTTP communication.
Basically, your pick depends on compatibility. If you need high compatibility with good overall performance, go for Server Sent Events or Long Polling. If you wish to use the latest technology and your system supports HTTP3, choose WebTransport.
It's the best modern protocol. Other options like MQTT, AMQP, or CoAP also facilitate communication between devices and servers. Thus, many options exist, and your decision will depend on your needs and scenario.
Don't worry if it sounds complex. Platforms like PubNub can simplify the process for you.