babl-ws.github.io/index.html at master · babl-ws/babl-ws.github.io · GitHub

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    <title>Babl Low-Latency WebSocket Server - Index</title>
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                    <p>BABL</p>
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            <li><a href="index.html">Home</a></li>
            <li><a href="getting_started.html">Getting Started</a></li>
            <li><a href="application.html">Application</a></li>
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<div class="container" role="main">
    <div class="content-body">
        <p>
            <strong>Babl</strong> is a high-performance, scalable web-socket server designed for use in low-latency applications.<br/><br/>
            Built from the ground up to provide blazing fast execution speeds, and featuring a novel auto-scaling
            mechanism, <strong>Babl</strong> will comfortably handle high throughput, large session-count workloads without slowing down.<br/><br/>
            Using an event-driven reactive programming model, your application code is executed in an allocation-free,
            lock-free event-loop for maximum efficiency and mechanical sympathy.<br/><br/>
            <strong>Babl</strong> is particularly well suited to financial or crypto-currency exchanges, where clients may be connecting
            to APIs using their own web-socket clients and latency is a key differentiator.
        </p>

        <h4 class="heading heading-primary">Your Application</h4>
        <p>
            <strong>Babl</strong> is a container for your application, providing a high-performance proxy for web-socket connections.<br/><br/>
            Your application will be notified of connection lifecycle events
            (<code>onConnect</code>, <code>onDisconnect</code>),
            and receive messages (<code>onMessage</code>) from client connections.<br/><br/>
            Your application will publish responses to inbound messages, which will be sent back to the client.<br/><br/>
            For more information, see <a href="application.html">Application</a>.
        </p>
        <h4 class="heading heading-primary">Use case: Market Data Distributor</h4>
        <img src="assets/img/market_data_distributor.png" alt="Babl Server as Market Data Distributor" title="Babl Server as Market Data Distributor" class="image-large"/>
        <p>
            In this example, an exchange publishes market data over an IP multicast network to multiple instances
            of Babl Server. Each instance contains a single Application (containing business logic such
            as market data subscriptions), and multiple Session Containers.<br/><br/>
            The Application publishes market data updates to the Sessions via a local IPC bus,
            where they are distributed to the trading algos or other clients over TCP using the
            web socket protocol.
        </p>
        <p>
            This architecture allows the number of server instances to be scaled horizontally as
            demand grows. Multi-core machines can also be utilised to run several Session Containers
            per server, making efficient use of available CPU cores without the overhead of
            contention.
        </p>
        <p>
            Babl can encode over <strong>40 million frames per second</strong>, per Session Container.
            <br/><br/>
            The garbage-free design means that in-server latency should be less than 100 microseconds
            at the 99th percentile.
        </p>
        <p>
            See the <a href="getting_started.html">Getting Started</a> guide for more information.
        </p>
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        Copyright 2020 <a href="https://aitusoftware.com">Aitu Software Limited</a>
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