Social SDK Glossary /

Webhooks vs WebSockets

What is the difference between Webhooks and WebSockets?

Webhooks and WebSockets are two common methods for enabling real-time data and event communication in modern applications, particularly for social platforms, messaging, and in-app interactions.

Both technologies serve similar purposes but differ fundamentally in architecture, connection persistence, and use cases.

Overview of Webhooks

Webhooks are HTTP callbacks that allow a server to send real-time data to another server whenever a specific event occurs.

Key characteristics:

  • Event-driven: triggers only when specific events happen
  • Push-based: server sends data to the configured endpoint
  • Stateless: no persistent connection is maintained
  • Simple to implement and lightweight

Common examples in social SDKs:

  • New user registration triggers a welcome workflow
  • Feed updates notify external services
  • Content moderation events trigger downstream processing

Overview of WebSockets

WebSockets provide a persistent, full-duplex connection between client and server, allowing continuous bidirectional communication.

Key characteristics:

  • Maintains a persistent connection over TCP
  • Full-duplex: data flows in both directions in real-time
  • Ideal for live updates, chat, and interactive dashboards
  • More complex than webhooks, requires connection management

Common examples in social SDKs:

  • Real-time messaging in chat applications
  • Live notifications and presence indicators
  • Real-time activity feeds and collaborative updates

Key differences between Webhooks and WebSockets

Connection

Webhooks: stateless HTTP calls
WebSockets: persistent TCP connection

Data flow

Webhooks: server-to-server push only
WebSockets: bidirectional communication

Use cases

Webhooks: lightweight event notifications
WebSockets: live updates, messaging, collaboration

Complexity

Webhooks: simple to implement
WebSockets: requires connection management and scaling

Webhooks vs WebSockets in social SDKs

Choosing the right technology depends on the type of interaction:

  • Activity Feed updates often use Webhooks for server-to-server notification delivery.
  • Real-Time Messaging uses WebSockets to maintain low-latency connections between users.
  • Push Notifications can integrate Webhooks to trigger events from backend systems.

Performance considerations

Webhooks:

  • Lightweight, scales easily for sporadic events
  • Can fail silently if the receiver endpoint is unavailable

WebSockets:

  • Real-time delivery and low latency
  • Requires connection pooling, scaling infrastructure, and heartbeat mechanisms

Security considerations

Both methods require strong authentication and verification:

  • Webhooks: HMAC signatures, TLS, IP whitelisting
  • WebSockets: Secure WebSocket protocol (wss://), token-based auth

When to use Webhooks vs WebSockets

Use Webhooks

For lightweight, event-driven notifications between servers, e.g., triggering workflows, updating analytics, or sending alerts.

Use WebSockets

For real-time, interactive applications where continuous two-way communication is required, such as chat, live feeds, or multiplayer interactions.

Combining Webhooks and WebSockets

Many platforms use both:

  • Webhooks for server-to-server event delivery
  • WebSockets for client-facing real-time updates

This hybrid approach allows platforms to optimize performance and scalability while maintaining real-time responsiveness.

Infrastructure and scaling

Scaling WebSockets requires:

  • Connection-aware load balancers
  • Horizontal scaling of real-time servers
  • Event-driven architectures with message queues

Scaling Webhooks requires:

  • Retry mechanisms for failed requests
  • Event queueing to prevent spikes
  • Monitoring and alerting for endpoint health

Strategic considerations

Choosing between Webhooks and WebSockets affects:

  • System architecture complexity
  • Latency of user-facing features
  • Resource utilization and infrastructure costs
  • Developer experience

FAQs

What is a webhook?▼

A webhook is a server-to-server HTTP callback triggered by specific events, delivering real-time notifications.

What is a WebSocket?▼

A WebSocket is a persistent full-duplex connection allowing continuous bidirectional communication between client and server.

When should I use webhooks vs WebSockets?▼

Use Webhooks for lightweight, event-driven server notifications, and WebSockets for real-time, interactive client communication.

Can Webhooks and WebSockets be used together?▼

Yes. Platforms often use Webhooks for backend event delivery and WebSockets for front-end real-time updates.

Are WebSockets secure?▼

Yes, when using the secure WebSocket protocol (wss://) with proper authentication and TLS encryption.

Do Webhooks require polling?▼

No. Webhooks push events to endpoints only when they occur, eliminating the need for constant polling.

Related terms

Disclaimer
Results may vary depending on your app, user base, industry, and implementation details. Social+ does not guarantee any specific outcomes, retention improvements, or business results.

This content is not financial, legal, or professional advice. Always conduct your own testing and due diligence before making product or strategic decisions.

Last updated: May 2026 · We regularly review and update our content. If you spot an inaccuracy, please let us know.