![]() After the connection times out, the thread goes back to the Ready stage. The maximum duration of this stage is determined by the keepAliveTimeout value set in the server’s configuration file. Keep-Alive: The thread is keeping the connection open for the same client to send another request.Finishing: The thread has finished processing the request and is sending a generated response back to the client.Service: The thread is processing and generating a response for an incoming request.Parse and Prepare Request: The thread is parsing request headers or preparing to read the body of the request.Ready: The thread is available to process a request.Each thread progresses through a series of stages as it processes a request: This page includes information about the Tomcat server and its AJP and HTTP connectors, as well as memory usage for the JVM.Įach connector section displays information about thread usage (e.g., max threads, current thread count, and current number of busy threads) and request throughput and performance (e.g., processing time, error counts, and bytes received), as well as information about each active thread, including its current stage. If you need a high-level view of application and server metrics, you can navigate to the /manager/status page or click on the “Server Status” button from the home page. JMX Proxy: a text-based interface for querying Tomcat metrics.Application Manager: provides diagnostic tools for investigating memory leaks within your applications.Server and application status pages: display high-level overviews of JVM, connector, and application metrics, including memory usage, thread counts, and request processing time.From there, you can navigate to the following areas to view metric data: When you access the web interface, you will be prompted to log in. Using Tomcat Manager’s web interfaceīy default, Tomcat Manager is accessible locally from though you can change this in Tomcat’s server configuration file. Check out the Tomcat docs for more information on the roles available for Tomcat Manager. If you are using a fresh install of Tomcat, you will need to create a new user otherwise, you can assign roles to any existing user. Then it creates a new tomcat-jmx user, assigns it those roles, and sets a password for the user. This code snippet first defines the two roles we want to assign to our user.
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