64 lines
3.2 KiB
HTML
64 lines
3.2 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Module machi_flu1</title>
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<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
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</head>
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<body bgcolor="white">
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<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
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<hr>
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<h1>Module machi_flu1</h1>
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<ul class="index"><li><a href="#description">Description</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>The Machi FLU file server + file location sequencer.
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<h2><a name="description">Description</a></h2><p>The Machi FLU file server + file location sequencer.</p>
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<p>This module implements only the Machi FLU file server and its
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implicit sequencer.
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Please see the EDoc "Overview" for details about the FLU as a
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primitive file server process vs. the larger Machi design of a FLU
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as a sequencer + file server + chain manager group of processes.</p>
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<p>For the moment, this module also implements a rudimentary TCP-based
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protocol as the sole supported access method to the server,
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sequencer, and projection store. Conceptually, those three
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services are independent and ought to have their own protocols. As
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a practical matter, there is no need for wire protocol
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compatibility. Furthermore, from the perspective of failure
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detection, it is very convenient that all three FLU-related
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services are accessed using the same single TCP port.</p>
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<p>The FLU is named after the CORFU server "FLU" or "FLash Unit" server.</p>
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TODO There is one major missing feature in this FLU implementation:
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there is no "write-once" enforcement for any position in a Machi
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file. At the moment, we rely on correct behavior of the client
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& the sequencer to avoid overwriting data. In the Real World,
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however, all Machi file data is supposed to be exactly write-once
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to avoid problems with bugs, wire protocol corruption, malicious
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clients, etc.
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<h2><a name="index">Function Index</a></h2>
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<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#start_link-1">start_link/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#stop-1">stop/1</a></td><td></td></tr>
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</table>
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<h2><a name="functions">Function Details</a></h2>
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<h3 class="function"><a name="start_link-1">start_link/1</a></h3>
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<div class="spec">
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<p><tt>start_link(Rest) -> any()</tt></p>
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</div>
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<h3 class="function"><a name="stop-1">stop/1</a></h3>
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<div class="spec">
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<p><tt>stop(Pid) -> any()</tt></p>
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</div>
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<hr>
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<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
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<p><i>Generated by EDoc, Apr 8 2015, 17:31:11.</i></p>
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</body>
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</html>
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