---
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description: |-
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Serf is a decentralized solution for cluster membership, failure detection, and orchestration. Lightweight and highly available.
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---
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<header>
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<div class="container hero">
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<div class="row">
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<div class="col-md-offset-2 col-md-8">
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<%= inline_svg "logo-text.svg", height: 120, class: "logo" %>
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<h1>Decentralized Cluster Membership, Failure Detection, and Orchestration.</h1>
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<a class="button primary" href="/intro/index.html">Get Started</a>
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<a class="button" href="/downloads.html">Download <%= latest_version %></a>
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</div>
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</div>
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</div>
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</header>
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<section id="features" class="marketing">
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<div class="container">
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<div class="row">
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<div class="col-sm-4 feature-icon">
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<%= inline_svg "gossip-protocol.svg", width: 200 %>
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</div>
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<div class="col-sm-8">
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<h2>Gossip-based Membership</h2>
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<p>
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Serf relies on an efficient and lightweight gossip protocol to
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communicate with nodes. The Serf agents periodically exchange
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messages with each other in much the same way that a zombie
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apocalypse would occur: it starts with one zombie but soon infects
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everyone. In practice, the gossip is <a
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href="/docs/internals/simulator.html">very fast and extremely
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efficient.</a>
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</p>
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</div>
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</div>
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</div>
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</section>
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<section id="features" class="marketing">
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<div class="container">
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<div class="row">
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<div class="col-sm-8">
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<h2>Failure Detection</h2>
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<p>
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Serf is able to quickly detect failed members and notify the rest
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of the cluster. This failure detection is built into the heart of
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the gossip protocol used by Serf. Like humans in a zombie
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apocalypse, everybody checks their peers for infection and quickly
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alerts the other living humans. Serf relies on a random probing
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technique which is proven to efficiently scale to clusters of any
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size.
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</p>
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</div>
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<div class="col-sm-4 feature-icon">
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<%= inline_svg "failure-detection.svg", width: 200 %>
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</div>
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</div>
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</div>
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</section>
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<section id="features" class="marketing">
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<div class="container">
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<div class="row">
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<div class="col-sm-4 feature-icon">
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<%= inline_svg "custom-event.svg", width: 200 %>
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</div>
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<div class="col-sm-8">
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<h2>Custom Events</h2>
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<p>
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In addition to managing membership, Serf can broadcast custom events
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and queries. These can be used to trigger deploys, restart
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processes, spread tales of human heroism, and anything else you may
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want. The event system is flexible and lightweight, making it easy
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for application developers and sysadmins alike to leverage.
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</p>
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</div>
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</div>
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</div>
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</section>
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