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| FAQ |
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| Table of Contents |
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| • Is LiteSpeed web server free? top |
| There are 2 editions: Standard and Enterprise. The Standard Edition is free both personal and commercial use.
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| • What are the differences between Standard and Enterprise editions? top |
| They are based on the same LiteSpeed Network Core. Standard Edition is a
limited feature version and does not scale with MP servers. Enterprise Edition is fine-tuned for optimal
performance and is linearly scalable to N-Multi-CPU/Core servers.
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| • What kinds of support are available? top |
| Various levels Enterprise Support Contracts are available at our online site: LiteSpeed Support Services.
Stand Edition users can get free community based support at the Support Forum.
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| • How is the performance comparing to other web servers? top |
| For static content, LiteSpeed Standard Edition is up to 2 times faster than Apache,
Enterprise Edition is up to 6 times faster than Apache and matching the performance of
RedHat's Content Accelerator TUX, a web server built into the Linux kernel. For dynamic content,
PHP scripting is up to 50% faster than Apache's mod_php. For more information, please
take a look at our Benchmark page.
If you are interested in comparing them yourself, please read "How to measure web server performance?".
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| • Why is LiteSpeed server so fast? top |
| Clean and optimal network processing architecture designed from the ground up for low-latency and scalability.
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| • Does LiteSpeed server support URL rewrite? top |
| Yes. Since release 2.0, a high performance Apache mod_rewirte
compatible rewrite engine is implemented in within LiteSpeed server.
Your existing rewrite rules should work properly without any modification.
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| • What server APIs are available for third party products? top |
| CGI, FastCGI, HTTP Proxy, AJP 1.3 (Apache JServ Protocol), and the most optimized of them all, LiteSpeed Server API (LSAPI).
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| • Can I change the server string in the response header? top |
| Yes. You can hide the detail version number through the web
administration console. Only the product name "LiteSpeed" is revealed in the reponse header.
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| • Does LiteSpeed server support PHP? top |
| Yes. PHP is supported via PHP CGI/FCGI SAPI or our own LiteSpeed
SAPI (LSAPI). PHP support is automatically configured during the installation of LiteSpeed server.
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| • Does PHP Accelerators works with Litespeed web server? top |
| Yes. All third party PHP Accelerators should work very well with
Litespeed web server. You can turn on pre-built "Turck MMCache" or
"Alterntive PHP Cache (APC)" with our installer during installation, or just run
[lsws_home]/admin/misc/enable_phpa.sh to modify it post installation.
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| • Can LiteSpeed server run PHP FastCGI process in suEXEC mode? top |
| Yes. LiteSpeed server supports FastCGI suEXEC for improved security in a shared hosting environment
when used properly.
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| • How is LiteSpeed's PHP performance comparing to that of Apache's mod_php? top |
With PHP CGI/FCGI SAPI, LiteSpeed's PHP performance is upto 50%
better than Apache's mod_php.
With PHP LiteSpeed SAPI, LiteSpeed's PHP performance is upto 100%
better than Apache's mod_php.
For more detail, please visit our benchmark page.
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| • Can PHP configuration settings be changed in LiteSpeed top |
| Yes. With PHP LiteSpeed SAPI, PHP configuration settings can be
changed from the web admin console as
well as .htaccess files. LiteSpeed uses the same exact directives as those
in Apache mod_php.
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| • Does LiteSpeed web server support JSP/Servlet? top |
| Yes. JSP and Servlet functionality is supported through the AJP 1.3 interface.
You need to run a compatible servlet engine like Apache Tomcat or Jetty to take advantage of these features.
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| • Does LiteSpeed web server support ASP? top |
| Yes through third party software. Like Instant ASP.
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| • Does LiteSpeed web server support ASP.NET? top |
| Yes with FastCGI binding to Mono.
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| • Does LiteSpeed server support ISAPI and NSAPI? top |
| No. We recommend FastCGI or LiteSpeed SAPI (LSAPI).
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| • Can I use LiteSpeed server as a proxy server? top |
| Yes. You can use LiteSpeed as a transparent reverse proxy server running in front
of clusters of application servers such as Apache or WebLogic.
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| • Can LiteSpeed server act as a cache proxy? top |
| No but it is on our to-do list.
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| • Can I use LiteSpeed server as a static content accelerator? top |
Yes. LiteSpeed server is faster than static content
accelerators like thttpd, boa and TUX when serving static contents.
However, it is highly recommended
to have LiteSpeed server serve both static and dynamic content
when possible as it is much more efficient and easier to manage than the competition.
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| • Is there a mod_perl equivalent for LiteSpeed server? top |
| LiteSpeed server does not and will never embed Perl into its
server process. If you are looking to access server internal
through Perl script, the answer is No. However, if you are looking
for a high performance Perl CGI environment, the answer is Yes. A
persistent Perl daemon using FastCGI interface is available
at lsws/fcgi-bin/lsperld. The Perl FastCGI daemon is equivalent to
Apache::Registry module within Apache's mod_perl. Alternatively, you can utilize the
reverse proxy interface of LiteSpeed to forward perl requests to a
back-end Apache server with mod_perl.
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| • Are Apache modules supported? top |
| No. LiteSpeed uses completely different architecture and does not
support modules written for Apache. However, you may find that
features of most commonly used Apache modules have already been
implemented by LiteSpeed.
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| • Are Server Side Includes (SSI) supported? top |
| No. We suggest you use PHP, Python, Perl, Ruby, or JSP instead. SSI usage as a whole
is on a steep decline and has been supplanted by dynamic scripts.
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| • Does LiteSpeed server support virtual hosting? top |
| Yes. LiteSpeed server support an unlimited number of virtual hosts.
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| • Can I run multiple copies of LiteSpeed server on one machine? top |
| No. Only one instance of LiteSpeed server can exist at the same time.
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| • Will the processing power of my SMP (Symmetric MultiProcessor) top |
| Yes. Our Enterprise Edition server is fully optimized to linearly scale to any N number of Processors/Cores.
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| • Is LiteSpeed server open-source? top |
| No. LiteSpeed Technologies embraces the open-source community but our product is not open-source.
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| • Is LiteSpeed server based on any existing web server? top |
| No. LiteSpeed server was built from scratch in C++. Some open
source or free libraries were used such as OpenSSL, OpenLDAP, expat,
PCRE and zlib. All trademarks and copyrights of third party libraries
belong to their respective owners.
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| • I would like to help, is there anything I can do? top |
| Even though LiteSpeed server is not open-source, LiteSpeed embraces the community spirit and
all our users can contribute in many ways: feature testing, bug reporting, new feature suggestions,
helping others to move to LiteSpeed, and much more. We have a public forum and wiki setup on our online site at
LiteSpeed Technologies.
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Copyright © 2003-2007. Lite Speed Technologies Inc.
All rights reserved. |