Webhooks vs WebSockets
Both are commonly confused. Here is a side-by-side breakdown of what each one does, when to reach for it, and when it would be the wrong choice.
Webhooks
Webhooks = automatic notifications from one app to another when something happens. Like getting a text when your package arrives instead of refreshing the tracking page all day.
Read full block →WebSockets
WebSockets = a persistent two-way connection between your browser and server. Instead of constantly asking "any updates?" the server pushes data to you instantly.
Read full block →When to use each
Use Webhooks when
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You need to know when something happens in another app
Customer paid? Order shipped? Pull request merged? Webhooks tell you immediately. Perfect for payment notifications, shipping updates, or syncing data between services.
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You want real-time reactions
Send a welcome email the instant someone signs up. Update inventory the moment an order is placed. Webhooks let you react in real-time, not on a 5-minute delay.
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You're connecting to a third-party service
Stripe, GitHub, Shopify, Twilio: almost every major service supports webhooks. They are the standard way to receive updates from external platforms.
Use WebSockets when
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Your app needs instant updates
Chat messages, live dashboards, collaborative editing, anything where users expect to see changes the moment they happen. If a 3-second delay feels too slow, you need WebSockets.
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Data flows in both directions
The user sends messages AND receives them in real-time. A multiplayer game where everyone sees each other's moves. A live auction where bids appear instantly for all participants.
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You're streaming AI responses
When you want ChatGPT-style word-by-word output instead of waiting for the entire response. Streaming AI answers use WebSocket-like connections to push each token as it's generated.
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Multiple users see the same live data
Stock tickers, live sports scores, shared whiteboards. When the same data needs to reach many users at the same time, WebSockets push once and everyone gets it.
When to avoid each
Avoid Webhooks when
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You only need data once
If you just need to fetch a user's profile one time, use a regular API call. Webhooks are for ongoing notifications, not one-time lookups.
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You control both systems
If you own both the sender and receiver, you might prefer direct function calls, message queues, or database triggers. Webhooks shine when connecting separate services.
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You're building a tiny script
A simple script that runs once doesn't need webhook infrastructure. Keep it simple. Poll if you only need data occasionally.
Avoid WebSockets when
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You just need to load a page once
Showing a user profile, displaying a blog post, loading search results. Regular HTTP requests are simpler and work perfectly. Don't add WebSockets to pages that don't need live updates.
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Updates happen rarely
If data changes once an hour or once a day, a persistent connection is overkill. A simple page refresh or webhook notification is much simpler and uses fewer resources.
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You're building a simple form submission
Contact forms, sign-up pages, checkout flows. These are one-time actions. A regular POST request submits the data and you're done. No need for a persistent connection.