Specs are quantitative aspects of the option such as the price
Pros
Pro
Lightweight -> in extreme!
ITs very used in large sites such wikipedia and google! performance and scalability are very extended! Lighttpd offers a more basic set of functions out of the box compared most web servers. Extra functionality can be added via modules.
Lighttpd is event-driven, asynchronous, non-blocking and single threaded. This allows lighttpd to be manage resources more efficiently compared to thread-based models (like Apache).