Browse wiki
| Component programs
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mergelogs +
|
| Computer languages
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C +
|
| Database
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server +
|
| Documentation note
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User tutorial available from http://siag.nu/pen/howto.shtml
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| Full description
|
Pen is a load balancer for "simple" TCP-ba … Pen is a load balancer for "simple" TCP-based protocols such as HTTP or SMTP. It allows several servers to appear as one to the outside. It automatically detects servers that are down and distributes clients among the available server for high availability and scalable performance. The load balancing algorithm tracks clients and tries to send them back to the server they visited the last time. The client table has slots (default 2048, settable through command-line arguments). When the table is full, the least recently used one is discarded to make room for the new one. This is superior to a simple round-robin algorithm, which sends a client that connects repeatedly to different servers. This breaks applications including most modern web applications) that maintain state between server connections.maintain state between server connections.
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| Homepage URL
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http://siag.nu/pen/ +
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| Interface
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daemon +
, web +
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| Internet-application
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server +
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| Is GNU
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false +
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| Keywords
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TCP +
, HTTP +
, server +
, SMTP +
, net apps +
, protocols +
, load balancing +
, pen +
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| Last review by
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Janet Casey +
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| Last review date
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23 January 2009 +
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| License
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GPLv2orlater +
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| License verified by
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Janet Casey +
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| License verified date
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15 January 2002 +
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| Name
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Pen +
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| Real name
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Ulric Eriksson +
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| Related projects
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HAproxy +
, Balance +
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| Resource URL
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mailto:pen@siag.nu +
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| Resource audience
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Bug Tracking +
, Developer +
, Support +
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| Resource kind
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E-mail +
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| Revisionid
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3,527 +
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| Revisiontimestamp
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12 April 2011 08:47:41 +
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| Revisionuser
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User:WikiSysop +
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| Role
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Maintainer +
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| Short description
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Load balancer for TCP protocols +
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| Submitted by
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Database conversion +
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| Submitted date
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1 April 2011 +
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| Use
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internet-application +
, web-authoring +
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| User level
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none +
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| Version comment
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0.15.0 stable released 2004-07-06
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| Version date
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6 July 2004 +
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| Version download
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http://siag.nu/pub/pen/pen-0.15.0.tar.gz +
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| Version identifier
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0.15.0 +
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| Version status
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stable +
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| Web-authoring
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server +
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| Works-with
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database +
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| Has queryThis property is a special property in this wiki.
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Pen +
, Pen +
, Pen +
, Pen +
, Pen +
, Pen +
, Pen +
, Pen +
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| Modification dateThis property is a special property in this wiki.
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5 March 2013 21:23:57 +
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| Page has default formThis property is a special property in this wiki.
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Entry +
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| Has subobjectThis property is a special property in this wiki.
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Pen +
, Pen +
, Pen +
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| EmailThis property is a special property in this wiki.
|
ulric@siag.nu +
|
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
copy of the license is included in the page “GNU Free
Documentation License”.
The copyright and license notices on this page only apply to the
text on this page. Any software described in this text has its
own copyright notice and license, which can usually be found in
the distribution itself.