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Special Forums News, Links, Events and Announcements Complex Event Processing RSS News XASAX Launches Into CEP with Virtual Cyber Trading Hosting Post 302142199 by Linux Bot on Thursday 25th of October 2007 03:30:17 AM
Old 10-25-2007
XASAX Launches Into CEP with Virtual Cyber Trading Hosting

Tim Bass
Thu, 25 Oct 2007 06:57:50 +0000
XASAX has put together a virtual machine CEP hosting solution, at the source of the majority of stock exchanges in the US, using VMWare and clustered hardware. They have implemented a 5 POP financial backbone of market data with proximity hosting / co-location at each exchange throughout the country, which they claim, encompasses 95% of all publicly available market liquidity.
XASAX is currently using a StreamBase CEP engine with Studio seats. However, the XASAX network is touted as agnostic, so users can use any CEP or cyber trading software platform.
Each ticker plant on the XASAX network uses a proprietary message bus for machine to machine connectivity. The CEP engines are connected via Infiniband to a ticker plant. The ticker plants receive raw multicast market data direct from the exchanges.
There are 3 hosted ticker plants on the XASAX network.
1. Exegy (http://www.exegy.com). Hardware accelerated feed handlers providing consolidated market data feeds. They are parsing OPRA (~200 mbps of streaming market data) in ~80 microseconds in one machine using a combination of FPGAs and CPU.
2. InfoDyne (http://www.infodyne.com). Software based parsing. This solution parses OPRA in ~500 microseconds in 4 machines. It is very similar to Wombat.
3. XASAX custom parsers - http://www.opentick.com. XAXAS told us that they have spent the past 4 years developing ticker plant technology, entitlement systems, distribution methods, and feed handlers for exchanges. They are using lightweight versions of this software to drive CEP engines.
StreamBase, at the same time, incorporated opentick APIs this month independent of XASAX. Therefore, StreamBase works with the XASAX software in the initial launch period.
Under the XASAX teaming strategy with CEP vendors, XASAX hopes to bring down the overall cost of deploying a CEP algo trading engine dramatically.
XASAX plans to have ongoing beta tests for new feeds, engines & products. In addition, they plan to maintain beta test trial periods for all hosted applications and virtual servers. In the latter part of November, XASAX plans to go live with Nasdaq feeds & StreamBase in a production cyber trading environment.



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ftpservers(4)							   File Formats 						     ftpservers(4)

NAME
ftpservers - FTP Server virtual hosting configuration file SYNOPSIS
/etc/ftpd/ftpservers DESCRIPTION
The ftpservers file is used to configure complete virtual hosting. In contrast to limited virtual hosting, complete virtual hosting allows separate configuration files to be specified for each virtual host. The set of configuration files for each virtual host are placed in their own directory. The ftpservers file associates the address of each virtual host with the directory its configuration files are stored in. The virtual host configuration files must be named: ftpaccess Virtual host's access file ftpusers Restricts the accounts that can use the virtual host ftpgroups Virtual hosts enhanced group access file ftphosts Allow or deny usernames access to the virtual host ftpconversions Customize conversions available from the virtual host You do not need to put every file in each virtual host directory. If you want a virtual host to use the master copy of a file, then do not include it in the virtual host directory. If the file is not included, the master copy from the /etc/ftpd directory will be used. The file names must match exactly. If you misspell any of them or name them differently, the server will not find them, and the server will use the master copy instead. The ftpaddhost utility is an administrative tool to configure virtual hosts. See ftpaddhost(1M). File Format There are two fields to each entry in the ftpservers file: address directory-containing-configuration-files For example: 10.196.145.10 /etc/ftpd/virtual-ftpd/10.196.145.10 10.196.145.200 /etc/ftpd//virtual-ftpd/10.196.145.200 some.domain INTERNAL When an FTP client connects to the FTP Server, in.ftpd(1M) tries to match the IP address to which the FTP client connected with one found in the ftpservers file. The address can be an IPv4 or IPv6 address, or a hostname. If a match is found, The FTP server uses any configuration files found in the associated directory. If a match is not found, or an invalid directory path is encountered, the default paths to the configuration files are used. The use of INTERNAL in the example above fails the check for a specific directory, and the master configuration files will be used. Either the actual IP address or a specific hostname can be used to specify the virtual host. It is better to specify the actual IP of the virtual host, as it reduces the need for a domain lookup and eliminates DNS security related naming issues, for example: 10.196.145.20 /etc/ftpd/config/faqs.org/ ftp.some.domain /etc/ftpd/config/faqs.org/ Lines that begin with a # sign are treated as comment lines and are ignored. FILES
/etc/ftpd/ftpservers ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWftpr | +-----------------------------+-----------------------------+ |Interface Stability |External | +-----------------------------+-----------------------------+ SEE ALSO
ftpaddhost(1M), in.ftpd(1M), ftpaccess(4), ftpconversions(4), ftpgroups(4), ftphosts(4), ftpusers(4), attributes(5) SunOS 5.10 1 May 2003 ftpservers(4)
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