# Dependencies { #dependencies }

**FastAPI** has a very powerful but intuitive **<abbr title="also known as components, resources, providers, services, injectables">Dependency Injection</abbr>** system.

It is designed to be very simple to use, and to make it very easy for any developer to integrate other components with **FastAPI**.

## What is "Dependency Injection" { #what-is-dependency-injection }

 * create the memory pressure required to cause soft references to be cleared.
 *
 * <p>This class only provides testing utilities. It is not designed for direct use in production or
 * for benchmarking.
 *
 * @author mike nonemacher
 * @author Martin Buchholz
 * @since 11.0
 */
@GwtIncompatible
@J2ktIncompatible
@J2ObjCIncompatible // gc

       * This lock is used to ensure safe and correct cancellation, it ensures that a new task is
       * not scheduled while a cancel is ongoing. Also it protects the currentFuture variable to
       * ensure that it is assigned atomically with being scheduled.
       */
      private final ReentrantLock lock = new ReentrantLock();

      /** The future that represents the next execution of this task. */
      @GuardedBy("lock")

1000 resources: requests: memory: 128Mi nodeSelector: {} tolerations: [] affinity: {} # Command to run after the main command on exit exitCommand: "" ## List of users to be created after minio install ## users: ## Username, password and policy to be assigned to the user ## Default policies are [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## Add new policies as explained here https://docs.min.io/docs/minio-multi-user-quickstart-guide.html ## NOTE: this will fail if LDAP is enabled in your MinIO...

securityContext: enabled: false runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 resources: requests: memory: 128Mi nodeSelector: {} tolerations: [] affinity: {} ## List of users to be created after minio install ## users: ## Username, password and policy to be assigned to the user ## Default policies are [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## Add new policies as explained here https://docs.min.io/docs/minio-multi-user-quickstart-guide.html ## NOTE: this will fail if LDAP is enabled in your MinIO...

securityContext: enabled: false runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 resources: requests: memory: 128Mi nodeSelector: {} tolerations: [] affinity: {} ## List of users to be created after minio install ## users: ## Username, password and policy to be assigned to the user ## Default policies are [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## Add new policies as explained here https://docs.min.io/docs/minio-multi-user-quickstart-guide.html ## NOTE: this will fail if LDAP is enabled in your MinIO...

nodeSelector: {} tolerations: [] affinity: {} extraVolumes: [] extraVolumeMounts: [] # Command to run after the main command on exit exitCommand: "" ## List of users to be created after minio install ## users: ## Username, password and policy to be assigned to the user ## Default policies are [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## Add new policies as explained here https://min.io/docs/minio/kubernetes/upstream/administration/identity-access-management.html#access-management ## NOTE:...

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enabled: false runAsUser: 1000 runAsGroup: 1000 resources: requests: memory: 128Mi # Command to run after the main command on exit exitCommand: "" ## List of users to be created after minio install ## users: ## Username, password and policy to be assigned to the user ## Default policies are [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## Add new policies as explained here https://min.io/docs/minio/kubernetes/upstream/administration/identity-access-management.html#access-management ## NOTE:...

    // One offs
    expected[112] = 786432;
    expected[118] = 786432;
    expected[119] = 1048576;
    expected[120] = 458752;
    expected[121] = 524288;
    expected[122] = 65536;
    // Anything not assigned was the default 0.
    return expected;
  }

  /**
   * Helper to run the loop to test all the permutations for the number of bytes specified.
   *
   * @param numBytes the number of bytes in the byte array