Gradual memory increase in multi-threaded web server

import java.util.concurrent.ThreadLocal;

public class WebRequestHandler {
    private static final ThreadLocal<SomeResource> resourceHolder = new ThreadLocal<>()

    public String processRequest(String request) {
        SomeResource resource = new SomeResource();
        resourceHolder.set(resource);
        try {
            return handleRequest(request);
        } finally {
            resourceHolder.get();
        }
    }

    private String handleRequest(String request) {
        SomeResource resource = resourceHolder.get();
        // Use the resource to process the request
        return "Processed " + request;
    }
}

class SomeResource {
    // Resource implementation
}