Introduction

Overview

LiteSpeed web server is an Apache interchangeable, high performance, secure and easy-to-use web server. It can handle thousands of concurrent connections with small memory footprint. It is much stronger and less vulnerable when facing various attacks.

Standard Features
    HTTP/1.1

    Dynamic Content Generation
    LiteSpeed Web Server support the following dynamic content generation methods:
    Virtual Hosting


    Per-Directory configuration file (.htaccess) support
    Unlike other lightweight web servers, Apache compatible per-directory configuration overridden is fully supported by LiteSpeed Web Server. With .htacess you can change configurations for any directory under document root on-the-fly, which in most cases is a mandatory feature in shared hosting environment.
    It is worth noting that enabling .htaccess support in LiteSpeed Web Server will not degrade server's performance, comparing to Apache's 40% drop in performance.
Security

LiteSpeed web server provides the following security features:
Reliability

LiteSpeed Web server runs completely in user space. The server can be easily upgraded or switched between different versions. The reliability of the Operating System is not affected.
CGI, Fast CGI and Servlet engine run in their standalone processes, the reliability of web server is not affected by the quality of third party software.
LiteSpeed web server is capable of automatically recovering from crash instantly.

User friendly

Compatibility

LiteSpeed web server is designed to be interchangeable with Apache, the most popular web server. LiteSpeed web server can even run directly from Apache's configuration files.
Currently, functionalities of the following Apache modules have been implemented:
mod_alias, mod_access, mod_expires, mod_actions, mod_cgi, mod_suexec, mod_mime, mod_ssl, mod_php, mod_frontpage, mod_security, mod_cache, mod_geoip, mod_fastcgi, mod_jk, mod_gzip/mod_deflate, mod_throttle, mod_proxy, mod_auth, mod_auth_ldap, mod_auth_passthrough, mod_rewrite and mod_autoindex.

LiteSpeed web server also uses the same syntax for distributed configuration file (.htacess) and URL rewrite rules, which makes the migration as easy as setting document root to the same directory as Apache's. If you do not use a control panel to manage Apache configuration, it is recommended to convert Apache's configuration file to LiteSpeed native XML configuration file, thus you can manage server configuration from our web administration interface. An Apache migration tool is included in the package.