Servlets vs CGI

Servlets vs CGI

• A Servlet does not run in a separate process
• A Servlet stays in memory between requests
• There is only a single instance which answers all requests concurrently. 
• This saves memory and allows a Servlet to manage persistent data
•  CGI requires more memory & CPU time. 
• Every link to every CGI program causes web server to create a separate process in which to run CGI.