}

    /**
     * Executes the crawler process in a separate JVM.
     * This method constructs the command line arguments, sets up the classpath,
     * and launches the crawler as an external process. It handles process lifecycle,
     * monitors output, and ensures proper cleanup.
     *
     * @throws JobProcessingException if the crawler process fails or times out
     */
    protected void executeCrawler() {

            restrictions.add(restriction);
            upperBound = restriction.getUpperBound();

            process = process.substring(index + 1).trim();

            if (process.startsWith(",")) {
                process = process.substring(1).trim();
            }
        }

        if (!process.isEmpty()) {
            if (!restrictions.isEmpty()) {
                throw new InvalidVersionSpecificationException(

import org.codelibs.fess.util.SystemUtil;

import jakarta.servlet.ServletContext;

/**
 * This job is responsible for executing the suggest creator process.
 * It builds and runs a command-line process to generate suggest data,
 * handling classpath setup, system properties, and process monitoring.
 */
public class SuggestJob extends ExecJob {

    private static final Logger logger = LogManager.getLogger(SuggestJob.class);

    /**

    )

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["uvicorn", "docs_src.separate_openapi_schemas.tutorial001:app"]
)
try:
    with sync_playwright() as playwright:
        run(playwright)
finally:

        ResultData target = resultData;
        for (final Ingester ingester : ingestFactory.getIngesters()) {
            try {
                target = ingester.process(target, responseData);
            } catch (final Exception e) {
                logger.warn("Failed to process Ingest[{}]", ingester.getClass().getSimpleName(), e);
            }
        }
        return target;
    }

    )
    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["uvicorn", "docs_src.separate_openapi_schemas.tutorial001:app"]
)
try:
    with sync_playwright() as playwright:
        run(playwright)
finally:

        return resultBuf.toString();

    }

    /**
     * Executes the thumbnail generator process.
     * Sets up the classpath, JVM options, and command line arguments
     * to launch the ThumbnailGenerator in a separate process.
     *
     * @throws JobProcessingException if the thumbnail generation process fails
     */
    protected void executeThumbnailGenerator() {

        private BlockingExchange(TransferEvent event) {
            super(event);
        }

        @Override
        public void process(Consumer<TransferEvent> consumer) {
            super.process(consumer);
            latch.countDown();
        }

        @Override
        public void waitForProcessed() throws InterruptedException {
            latch.await();
        }

            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a scroll request.", e);
            }
            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, e);
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a scroll request.", e);
            }

This is still true.

So, to be able to have **multiple processes** at the same time, there has to be a **single process listening on a port** that then transmits the communication to each worker process in some way.

### Memory per Process { #memory-per-process }