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AI solution for Interview Question on BFE.dev
80. Long Polling vs Sever-Sent Event vs WebSocket
Sure! Here are some pros and cons for each approach:
- Long Polling:
Pros:
- Compatible with most web servers
- Low overhead compared to WebSockets, since it's based on HTTP requests
- Can handle multiple requests/responses at once
Cons:
-
Not suitable for low-latency real-time applications, due to long response times
-
Can overload servers if there are many clients polling at once
-
Requires server-side code to handle connection management
-
Server-Sent Events:
Pros:
- Simple to implement for real-time, one-way data flow
- More lightweight than WebSockets, since it's based on HTTP
- Automatically handles reconnection and session management
Cons:
-
Limited to one-way communication from server to client
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Requires EventSource API support on the client side
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Not supported on older browsers
-
WebSockets:
Pros:
- Bidirectional communication between server and client
- Low latency and high throughput for real-time applications
- Handles reconnection and session management
Cons:
- Requires WebSocket support on both client and server side
- Higher overhead compared to HTTP-based approaches
- Can consume more server resources if not managed properly
Each approach has its own strengths and weaknesses, so the choice depends on the specific needs of the application being developed.