fastly/pushpin

Health v2 · maintenance only

Adoption not part of the score

3857 stars · 156 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Pushpin is a reverse proxy server written in Rust and C++ that adds realtime push capabilities (WebSockets, HTTP streaming, long-polling, SSE) to any API. It sits between clients and backend services, holding client connections open while communicating with backends via short-lived HTTP requests and a publish control API.

Use cases

• add websocket support to an existing api without rewriting the backend
• implement http streaming endpoints for realtime updates
• push data to connected clients from a stateless or serverless backend
• add realtime push to a microservices architecture without a centralized message broker
• support long-polling for older browsers
• keep api logic in one language while adding realtime features

When to choose

• you want transparent, client-side-library-free realtime push for an API
• your backend is written in any language and you don't want a separate realtime service
• you need WebSocket, streaming, and long-polling from a single component
• you want API management features like auth and analytics to work on realtime endpoints

When to avoid

• you need a fully managed realtime service rather than self-hosted infrastructure
• your use case is simple request/response with no push requirements
• you need client SDKs with rich subscription semantics exposed to clients

Facets

service · maturity active

proxy websocket http-server message-queue api-framework apis web-development backend networking self-hosted reverse-proxy realtime-push http-streaming long-polling server-sent-events grip zeromq fanout real-time linux macos docker web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="fastly/pushpin")