}

        assertTrue(latch.await(10, TimeUnit.SECONDS), "Concurrent operations should complete");
        executor.shutdown();

        // Circuit breaker should have handled concurrent operations
        assertTrue(successCount.get() > 0, "Should have some successful operations");
        assertTrue(failureCount.get() > 0, "Should have some failed operations");
    }

    @Test

### Top-level application { #top-level-application }

First, create the main, top-level, **FastAPI** application, and its *path operations*:

{* ../../docs_src/sub_applications/tutorial001_py310.py hl[3, 6:8] *}

### Sub-application { #sub-application }

Then, create your sub-application, and its *path operations*.

    * 特定の *path operation* に依存関係を宣言した場合は、**それらも実行されます**。
    * ルーターの依存関係が先に実行され、その後に[デコレータ内の `dependencies`](dependencies/dependencies-in-path-operation-decorators.md)、次に通常のパラメータ依存関係が続きます。
    * [`scopes` を伴う `Security` 依存関係](../advanced/security/oauth2-scopes.md) を追加することもできます。

/// tip | 豆知識

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Declare scopes in *path operations* and dependencies { #declare-scopes-in-path-operations-and-dependencies }

Now we declare that the *path operation* for `/users/me/items/` requires the scope `items`.

For this, we import and use `Security` from `fastapi`.

        double avgOpTimeNs = totalTime.get() / (double) operations.get();

        System.out.printf("Encryption Byte Tracking Performance: %d ops in %.2f ms%n", operations.get(), overallTimeMs);
        System.out.printf("  Avg atomic operation time: %.2f ns%n", avgOpTimeNs);

        // Verify lock-free performance (allowing for JVM overhead)
        assertTrue(avgOpTimeNs < 5000, "Atomic operations should be reasonably fast (no lock contention)");

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Declarar scopes en *path operations* y dependencias { #declare-scopes-in-path-operations-and-dependencies }

Ahora declaramos que la *path operation* para `/users/me/items/` requiere el scope `items`.

Para esto, importamos y usamos `Security` de `fastapi`.

	MTime                time.Time // Is only set in POST/PUT operations
	Expires              time.Time // Is only used in POST/PUT operations

	DeleteMarker            bool // Is only set in DELETE operations for delete marker replication
	CheckDMReplicationReady bool // Is delete marker ready to be replicated - set only during HEAD
	Tagging                 bool // Is only in GET/HEAD operations to return tagging metadata along with regular metadata and body.

        return false;
    }

    /**
     * Execute an RDMA operation with automatic retry and error handling
     *
     * @param <T> the type of result returned by the operation
     * @param operation the operation to execute
     * @param connection the RDMA connection to use
     * @return operation result
     * @throws IOException if operation fails after all retries
     */

    /**
     * Inner thread class for executing data store crawling operations.
     * Each thread handles crawling for a single data configuration,
     * processing documents and updating the search index.
     *
     * <p>The thread manages:</p>
     * <ul>
     *   <li>Data store initialization and document processing</li>
     *   <li>Index update operations through callbacks</li>
     *   <li>Error handling and failure logging</li>

// A TF_ExecutionContext stores knowledge about how to execute an operation.
// E.g. it could know whether we're in eager mode or graph mode, keeps track
// of gradient tapes, etc.
typedef struct TF_ExecutionContext TF_ExecutionContext;

// A TF_AbstractTensor is an input to an operation. E.g. it could be a union
// type of eager and graph tensors. It is also the result of executing an
// operation.
typedef struct TF_AbstractTensor TF_AbstractTensor;