Tomcat 5 supports Servlet 2.4 and Tomcat 4 supports Servlet 2..
Tomcat 5 supports JSP 2.0 specifications, Tomcat 4 JSP 1.2.
Tomcat 5 does not need a mapper component to find a child component, therefore simplifying the code.
Tomcat 5 has a more efficient default connector than Tomcat 4.
Tomcat 5 shares a thread for background processing whereas Tomcat 4's components all have their own threads for background processing.
Therefore, Tomcat 5 uses less resources in this regard.
Tomcat 5 supports JSP 2.0 specifications, Tomcat 4 JSP 1.2.
Tomcat 5 does not need a mapper component to find a child component, therefore simplifying the code.
Tomcat 5 has a more efficient default connector than Tomcat 4.
Tomcat 5 shares a thread for background processing whereas Tomcat 4's components all have their own threads for background processing.
Therefore, Tomcat 5 uses less resources in this regard.
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