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SP8D is the leading open-source solution for ultra-low-latency, lock-free, real-time messaging and cross-thread communication in JavaScript and Node.js. Built for demanding AI, finance, and multi-agent applications, SP8D delivers blazing-fast, observable, and reliable data transfer for modern web and server environments.

SP8D: Ultra-Low-Latency Lock-Free Channels for JavaScript & Node.js

The world’s first radically observable, lock-free, bounded protocol for cross-thread communication in browsers — designed for next-generation AI copilots, trading platforms, and multi-agent applications.

What is SP8D?

The world’s first radically observable, lock-free, bounded protocol for cross-thread communication in browsers — designed for next-generation AI copilots, trading platforms, and multi-agent applications.

SP8D is a breakthrough communication core for demanding front-end and AI workloads:

  • Blazing-fast, lock-free, slot-based communication via SharedArrayBuffer and Atomics
  • Truly bounded and backpressure-driven, with guaranteed “never drop, never leak, never stall”
  • Battle-tested for real-time trading, ML agents, and browser-native concurrency
  • Radically observable: live diagnostics, transparency, and no more guessing why your system slowed down

Whether you’re wiring up AI copilots, streaming market data, or building the next layer of browser-native intelligence—SP8D gives you tools, proof, and performance the rest of the ecosystem can’t match.

Instant Hello World (Browser/Node)

Try SP8D instantly in your browser or Node.js with this minimal example.

hello-sp8d.ts
import { createChannel } from "@sp8d/core";
 
const { channel } = createChannel({ slots: 8, slotSize: 64 }); // SPSC mode by default
 
// Producer
channel.send(new Uint8Array([1, 2, 3]));
 
// Consumer
const msg: Uint8Array | undefined = channel.recv(); // Uint8Array([1, 2, 3])
console.log(msg);

→ See SP8D Quickstart Recipes for Browser Workers for drop-in examples.

Why SP8D?

Tired of slow, memory-leaky, or debugging-nightmare message passing? Need guaranteed low-latency, fairness, and traceability under stress? Building for regulated, high-stakes domains (finance, AI/ML, ops, browser concurrency)? SP8D is designed for you.

Where to Go Next

Get Involved 👋

Found a bug? Ideas to expand? Want to sponsor SP8D adoption in your stack? Contribute or open issues — all feedback and help welcome. Want to see the roadmap? Check our vision.

What is SP8D