AI inference & GPU cloud
Centrifugo
Scalable self-hosted real-time messaging and state sync platform
- 0community votes
- 51DR by Ahrefs no change since last check
- 2023founded
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 1 Nov 2026.
Centrifugo is an open-source real-time messaging server for building scalable applications with instant message delivery via WebSocket, HTTP-streaming, SSE
What it is
Centrifugo is a self-hosted, open-source real-time messaging server that handles persistent connections and delivers messages instantly to clients across various transports. It synchronizes key-value state across clients with transactional consistency and scales to millions of connections.
The platform integrates seamlessly with any application without requiring changes to existing architecture. Written in Go with performance optimizations, Centrifugo can handle over 30 million messages per minute on standard hardware. It provides flexible authentication, channel history, online presence detection, delta updates, and connection event proxying.
Centrifugo scales horizontally using Redis, PostgreSQL, or NATS brokers and is proven in production by companies including VK, Badoo, ManyChat, and Grafana. A PRO version offers additional features like analytics with ClickHouse, realtime tracing, push notifications API, and SSO integrations for enterprise environments.
Systems
- WebSocket, HTTP-streaming, SSE, WebTransport, and gRPC transports
- Channel history and message recovery
- Flexible authentication and authorization
- State synchronization with transactional consistency
- Connection event proxying to backend
- Online presence detection for users
- Efficient binary Protobuf protocol
- Resumable streams and transport fallback for AI applications
Pricing
Pricing model: Open source
Open source version is free. Centrifugo PRO available with flat licensing (no per-connection or per-message fees) and requires contacting sales for a quote.
Want to see what Centrifugo does next? Follow them for milestones, new products and stories by email.
Centrifugo metrics
Signal readout for centrifugal.dev: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 51 Domain Rating no change since last check
- 10 Trust Flow no change since last check
- 37 Citation Flow no change since last check
- 346 Referring domains no change since last check
- 2,682 External backlinks no change since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 1 Nov 2026. Strongest signal topic: Business/Financial Services (9). Majestic signal 1 Nov 2026, signal shifted 1 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Centrifugo domain signal
Show the signal details
Public RDAP record, last read 11 Nov 2026, 07:28 UTC.
- Domain age 5 years
- Registered
- Expires
- Registrar NameSilo, LLC
- DNSSEC Not signed
Centrifugo post-launch signal
The record for Centrifugo after its launch on Nexora Launch (1 November 2026), from the readings we keep.
- 51 Domain Rating (Ahrefs) no change since launch
at launch: 51 (1 Nov 2026); latest: 13 Nov 2026 - 10 Trust Flow (Majestic)
first measured 1 Nov 2026 - 346 Referring domains (Majestic)
first measured 1 Nov 2026
Day 11 since launch. Next receipt: day 30, 1 Dec 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
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Quick answers
- How much memory does each connection use?
- Memory usage per connection varies by transport and enabled features. WebSocket connections typically use about 30-50 KB of RAM, meaning a 1 GB server can handle approximately 20-30k connections. Other transports may have different memory requirements.
- Can Centrifugo scale horizontally?
- Yes, Centrifugo can scale horizontally using built-in integrations with Redis, Redis-compatible storages, PostgreSQL, or NATS brokers for multi-node clusters.
- What happens when Centrifugo stops accepting new connections?
- The most common reason is reaching the open file limit on the server. The limit can be increased, and the server logs should indicate such issues.
- Can I use Centrifugo without a reverse proxy like Nginx?
- Yes, Centrifugo can be used without a reverse proxy, as Go's standard library supports direct exposure. However, a proxy can be useful for load balancing clients.
Centrifugo has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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