Highlighted Features
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HTTP/2, QUIC, HTTP/3
- Reliable support for new technologies before anyone else
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Apache Drop-in Replacement
- Reads Apache config files directly, supports .htaccess, WAF
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Zero-Downtime Maintenance
- Allows graceful restart and software update with zero downtime
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Event Driven Architecture
- Fewer processes, less overhead, and enormous scalability
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LSCache Engine with ESI
- Advanced server-level cache with hole-punching through ESI
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Mass Hosting Support
- Dynamic vHost setup through Redis backend or Rewrite Rules
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Asynchronous ModSecurity
- Processes popular ModSecurity rulesets with maximum efficiency
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Control Panel Compatible
- Integrates with cPanel, Plesk, DirectAdmin, CyberPanel, and more
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Server-Level reCAPTCHA
- Defends against Layer-7 DDoS attacks of any size
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HTTP/3 Support
LiteSpeed is the first to provide a production-ready implementation of this new Internet protocol, previously known as HTTP-over-QUIC.
Learn more about HTTP/3 and LiteSpeed's pioneering efforts here!
Features in Detail
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Basic Features
- HTTP/3
- Bubblewrap support
- TLS V1.3
- QUIC
- Redis
- HTTP/2
- HTTP 1.0/1.1 compliant
- Scripting Languages: PHP, Perl, Ruby, Python, Java, etc...
- Server APIs: LiteSpeed SAPI (LSAPI), CGI, FCGI, AJPv13, Proxy
- HTTPS
- IPv4 and IPv6
- Unlimited IP and name-based virtual hosting
- Unlimited concurrent connections
- Brotli Compression
- GZIP compression
- Support for SPDY/2, 3, and 3.1
- WebSocket proxying
- Runs on Linux, FreeBSD, MacOSX, Solaris
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Security
- Server-Level ReCaptcha layer-7 DDoS attacks Protection
- Session tickets with automatic key rotation for forward secrecy
- Support for secure websocket backend
- Brute-force protection for wp-login.php
- Built-in anti-DDoS connection and bandwidth throttling
- Asynchronous ModSecurity engine
- Compatibility with Atomic Secured Linux and Atomicorp Realtime ModSecurity Rules
- Anti SSL BEAST and renegotiation attack capabilities
- Strict HTTP request validation
- Denies buffer-overrun attempts
- PHP/Ruby/CGI/FCGI/LSAPI suEXEC
- CloudLinux CageFS compatibility
- External application and full server chroot ability
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Performance & Scalability
- Event-driven architecture
- Hundreds of thousands of concurrent connections
- Ability to cache POST requests
- HTTPS / TLSv1.3 certificate compression
- Unbeatable HTTPS performance with TLS record level optimization
- HTTPS/QUIC fast handshake and offload
- Tiny memory footprint
- Sendfile()
- Asynchronous I/O support
- LiteSpeed's exclusive server API (LSAPI) delivers the best dynamic content performance
- Unrivaled PHP suEXEC performance for shared hosting
- Three different PHP suEXEC setups for different needs and abilities
- Static content up to 5x faster than Apache
- Dynamic content up to 40x faster than Apache
- HTTPS 3x faster than Apache
- OCSP stapling
- Built-in page caching
- Turbocharge Magento and other web applications with ESI support
- Advanced .htaccess caching removes performance bottlenecks associated with .htaccess use in Apache
- CloudLinux LVE compatibility
- Increases scalability of web applications
- Separation of server and web applications allows for buffering of requests and responses, leading to better handling of multiple connections
- Just in time configuration cuts restart time
- CPU affinity allows for greater use of CPU cache
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High Availability
- High Availability for Redis Dynamic vHost Setup
- Apply changes with zero downtime
- Zero downtime server software upgrade
- Recovers from service failure instantly
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Apache Compatibility
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Ease of Use
- Dynamic vhost setup through Redis backend or Rewrite Rules
- Control panel plugins (cPanel, DirectAdmin, and Plesk)
- Officially supported by cPanel
- Intuitive WebAdmin console GUI
- Virtual host templates for easy configuration
- Real-time service monitoring
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Advanced Features
- Support Ruby/Python/Nodejs Applications with native configuration
- Most up-to-date high performance HTTP/3 implementationr
- Easily run multiple versions of PHP on one server
- MS FrontPage Server Extensions
- Geo-IP lookup
- Stream logs to external logger
- Custom log formatting
- Backend load balancing
- mp4/flv streaming
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CloudLinux Compatibility
