Lighttpd is an open-source web server which is more optimized for speed-critical environments than common products. It is a high quality lightweight web server which is well suited for hosting dynamic content websites. It supports CGI, FastCGI, SCGI and HTTP protocols.

• Lighttpd is a secure, light, fast and very flexible web server which is designed and optimized for high-performance environments.
• This web server can be used in a low memory servers, because it uses very low amount of main memory than other web servers such as Apache and nginx. That is, lighttpd occupies a different, low-resources area in the memory/CPU.
• Lighttpd is an asynchronous server. ie, It runs as single process with a single thread and non-blocking I/O and thus there won’t be much overload issues.
• It is the efficient web server to be used if we have more number of connections since it takes care of the CPU load. And it is the best solution if the server has load issues.

Apache is a process based server. ie, Each simultaneous connection requires a thread and which in turn results significant overhead in the server. If there is a low volume of connections then there isn’t much difference between these three web servers such as httpd, lighttpd and nginx.

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