The history of **FastAPI** is in great part the history of its predecessors.

As said in the section [Alternatives](alternatives.md){.internal-link target=_blank}:

<blockquote markdown="1">

**FastAPI** wouldn't exist if not for the previous work of others.

There have been many tools created before that have helped inspire its creation.

        // Verify totalentries is initialized
        assertNotNull(dfsRootEnum.totalentries);
    }

    @Test
    @DisplayName("getEntries should return empty array when no DFS roots exist")
    void testGetEntries_emptyArray() throws Exception {
        // Create empty DfsEnumArray200
        netdfs.DfsEnumArray200 emptyArray = new netdfs.DfsEnumArray200();
        emptyArray.count = 0;

        }

        infoMap = null;
    }

    /**
     * Adds a key-value pair to the information map.
     * Initializes the info map as a synchronized LinkedHashMap if it doesn't exist.
     *
     * @param key the parameter key to store
     * @param value the parameter value to store
     */
    public synchronized void putToInfoMap(final String key, final String value) {

   * free slot.
   *
   * The table size is capped because, when there are more threads
   * than CPUs, supposing that each thread were bound to a CPU,
   * there would exist a perfect hash function mapping threads to
   * slots that eliminates collisions. When we reach capacity, we
   * search for this mapping by randomly varying the hash codes of

So, we create an additional dependency `get_current_active_user` that in turn uses `get_current_user` as a dependency.

Both of these dependencies will just return an HTTP error if the user doesn't exist, or if is inactive.

So, in our endpoint, we will only get a user if the user exists, was correctly authenticated, and is active:

{* ../../docs_src/security/tutorial003_an_py310.py hl[58:66,69:74,94] *}

/// info

### Resource allocation

A denial of service caused by one model could bring down the entire server, but
we don't consider this as a vulnerability, given that models can exhaust
resources in many different ways and solutions exist to prevent this from
happening (e.g., rate limits, ACLs, monitors to restart broken servers).

### Model sharing

If the multitenant design allows sharing models, make sure that tenants and

      // unpark even though the thread has already removed itself from the list. But even if we did
      // use a CAS, that race would still exist (it would just be ever so slightly smaller).
      Thread w = thread;
      if (w != null) {
        thread = null;
        LockSupport.unpark(w);
      }
    }
  }

  /*

			name:         newtierfi.Name,
			inclFreeVers: true,
			expectedFree: true,
		},
		// ToFileInfo with 'inclFreeVers = false' must return errFileNotFound
		// when no non-free version exist.
		{
			vol:          newtierfi.Volume,
			name:         newtierfi.Name,
			inclFreeVers: false,
			expectedErr:  errFileNotFound,
		},
	}

	for _, ft := range freeVersionsTests {

if [ $? -ne 0 ]; then
	echo "expecting object to be missing. exiting.."
	exit_1
fi

if [ "${err_minio2}" != "Object does not exist" ]; then
	echo "expected to see Object does not exist error, exiting..."
	exit_1
fi

./mc cp README.md minio2/newbucket/

sleep 5
./mc stat --no-list minio1/newbucket/README.md
if [ $? -ne 0 ]; then

# Alternatives, Inspiration and Comparisons { #alternatives-inspiration-and-comparisons }

What inspired **FastAPI**, how it compares to alternatives and what it learned from them.

## Intro { #intro }

**FastAPI** wouldn't exist if not for the previous work of others.

There have been many tools created before that have helped inspire its creation.