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When seeking to install apache tomcat to set up a testing environment I encountered a serious dilemma.... apache gave me an extremely complex descision between two different versions of tomcat; they want me to chose between the core and the deployer version.
I would like to know what the exact difference is between the two.
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An embedded Tomcat server consists of a single Java web application along with a full Tomcat server distribution, packaged together and compressed into a single JAR, WAR or ZIP file.
Tomcat 10.0 builds on Tomcat 9.0. x, supports Java 8 and later, and is the first Tomcat release to migrate from the Java EE 8 specification to Jakarta EE 9.
While the main differences between 9. x.x and 10. x.x are not entirely significant, there are some notable differences between the two. The servlet jumps up to 5.0 from 4, JSP jumps up from 2.3 to 3.0, EL goes from 3.0 to 4.0, JWS from 1.1 to 2.0, and JASPIC 1.1 to 2.0.
The deployer is just an add-on tool to the Tomcat server; it doesn't contain the server itself.
So you need to download and install the core package.
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Core used for installing Tomcat on a machine and running apps on it. Deployer distribution contains only Tomcat Client Deployer - a package which can be used to validate, compile, compress to .WAR, and deploy web applications to Tomcat servers.
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