What are the differences between event polling and WebSockets?

What are the differences between event polling and WebSockets?

Event polling is a technique where the client repeatedly requests updates from the server at regular intervals, while WebSockets provide a persistent connection that allows for real-time communication without the need for repeated requests.

Which one is more efficient for real-time applications?

WebSockets are generally more efficient for real-time applications because they reduce latency and bandwidth usage by maintaining a constant connection.

Can you give me an example of when to use each?

Use event polling for simpler applications where real-time updates are not critical, like a news feed. Use WebSockets for applications requiring instant updates, like chat applications or online gaming.

What are the limitations of each method?

Event polling can lead to unnecessary server load and latency, while WebSockets may require more complex server infrastructure and can be challenging to implement in some environments.