if (executeImmediate) {
        new RunnableExecutorPair(runnable, executor).execute();
      }
    }

    void execute() {
      synchronized (runnables) {
        if (executed) {
          return;
        }
        executed = true;
      }

      while (!runnables.isEmpty()) {
        runnables.poll().execute();
      }
    }

    private static class RunnableExecutorPair {

// *num_retvals to the number of outputs.
//
// If async execution is enabled, the call may simply enqueue the execution
// and return "non-ready" handles in `retvals`. Note that any handles contained
// in 'op' should not be mutated till the kernel execution actually finishes.
//
// For sync execution, if any of the inputs to `op` are not ready, this call

* N'importe quel programme, n'importe quel code, **ne peut faire des choses** que lorsqu'il est **exécuté**. Donc, lorsqu'il y a un **processus en cours**.
* Le processus peut être **arrêté** (ou « tué ») par vous ou par le système d'exploitation. À ce moment‑là, il cesse de s'exécuter/d'être exécuté, et il **ne peut plus rien faire**.

## Concepts de déploiement { #deployment-concepts }

Ces exemples exécutent le programme serveur (par exemple Uvicorn), en démarrant **un seul processus**, à l'écoute sur toutes les IP (`0.0.0.0`) sur un port prédéfini (par exemple `80`).

C'est l'idée de base. Mais vous voudrez probablement vous occuper de certaines choses supplémentaires, comme :

* Sécurité - HTTPS
* Exécution au démarrage
* Redémarrages

    public AggregateLogJob() {
        // Default constructor
    }

    /**
     * Executes the search log aggregation job.
     * Stores search logs using the SearchLogHelper and returns execution results.
     *
     * @return execution result message, empty if successful or error message if failed
     */
    public String execute() {
        final SearchLogHelper searchLogHelper = ComponentUtil.getSearchLogHelper();

 * This class coordinates the execution of data store crawling processes,
 * managing multiple concurrent crawling threads and handling the indexing
 * of crawled documents into the search engine.
 *
 * <p>The DataIndexHelper supports:</p>
 * <ul>
 *   <li>Concurrent crawling of multiple data configurations</li>
 *   <li>Thread pool management for crawler execution</li>

 *
 * This class ensures that at most one thread is running at a time. This is initially the JUnit test
 * thread, which yields its execution privilege while calling [runTasks], [runNextTask], or
 * [advanceUntil]. These functions don't return until the task threads are all idle.
 *
 * Task threads release their execution privilege in these ways:
 *
 *  * By yielding in [TaskRunner.Backend.coordinatorWait].
 *  * By yielding in [BlockingQueue.poll].

Copiez l'exemple dans un fichier `main.py` :

{* ../../docs_src/security/tutorial001_an_py310.py *}

## Exécuter { #run-it }

/// info

Le package [`python-multipart`](https://github.com/Kludex/python-multipart) est installé automatiquement avec **FastAPI** lorsque vous exécutez la commande `pip install "fastapi[standard]"`.

 * that every {@code Runnable} that is {@linkplain #add added} will be executed after {@link
 * #execute()} is called. Any {@code Runnable} added after the call to {@code execute} is still
 * guaranteed to execute. There is no guarantee, however, that listeners will be executed in the
 * order that they are added.
 *

     */
    public PurgeDocJob() {
        // Default constructor
    }

    /**
     * Executes the document purging job.
     * Removes all documents from the search index that have expired based on their expires field.
     *
     * @return a string containing the execution result and any error messages
     */
    public String execute() {
        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();