Tomcat Configuration Optimization Guide

Tomcat is an open-source web application server, and its behavior and performance are determined by its configuration files. The following is a detailed explanation and optimization methods for commonly used Tomcat configurations.

1. configuration file for the server
2. Connector: Specifies the port and protocol that Tomcat listens on, with the default being port 8080.
3. Define virtual host information and configure multiple virtual hosts.
4. Define the context path and deployment directory of a web application.
5. Configuration file for a web application, typically used in the Java servlet container.
6. session-config: set the time duration of session timeouts and configure the properties of cookies.
7. Filter: Define filters to process requests and responses, such as character encoding, logging, etc.
8. servlet: defines a Servlet, including initialization parameters, mapping paths, and so on.
9. properties file for logging
10. Configure the log level and output method for Tomcat, such as outputting to the console or a log file.
11. catalina.sh/catalina.bat:
12. JAVA_OPTS: Configure the JVM parameters for Tomcat, such as memory size and garbage collection algorithm.
13. CATALINA_OPTS is used to configure the startup parameters of Tomcat, such as HTTP port and maximum number of threads.

Optimization method:

1. Adjust JVM parameters: Increase memory size as needed, and choose appropriate garbage collection algorithms and parameters based on actual circumstances.
2. Adjust Tomcat thread pool parameters: Adjust the maximum number of threads, connection timeout, etc., according to the server’s processing capacity and load conditions.
3. Enable gzip compression: By configuring the compression property of the Connector, you can enable compression of response data to reduce network traffic during transmission.
4. Enable caching mechanism by configuring properties like cacheMaxSize and cacheTTL in Context, in order to reduce access to the disk.
5. Optimize static resources by placing them on a separate domain, enabling browser caching, reducing the number of requests, and network transfers.
6. Setting up connection pooling: if using a database connection pool, you can adjust parameters such as the maximum number of connections and minimum idle connections to improve database access performance.

Note: when optimizing, it is important to test and adjust according to the actual situation to avoid over-optimizing leading to decreased performance.