//
// Design decisions made:
// * Backing store for tensor memory has an associated deallocation
//   function.  This deallocation function will point to client code
//   for tensors populated by the client.  So the client can do things
//   like shadowing a numpy array.
// * We do not provide TF_OK since it is not strictly necessary and we
//   are not optimizing for convenience.

It would actually be common to use Requests *inside* of a FastAPI application.

But still, FastAPI got quite some inspiration from Requests.

**Requests** is a library to *interact* with APIs (as a client), while **FastAPI** is a library to *build* APIs (as a server).

They are, more or less, at opposite ends, complementing each other.

Và có hàng tá các bản thay thế, tất cả đều dựa trên OpenAPI. Bạn có thể dễ dàng thêm bất kì bản thay thế bào cho ứng dụng của bạn được xây dựng với **FastAPI**.

Bạn cũng có thể sử dụng nó để sinh code tự động, với các client giao viết qua API của bạn. Ví dụ, frontend, mobile hoặc các ứng dụng IoT.

## Tóm lại, từng bước một

### Bước 1: import `FastAPI`

```Python hl_lines="1"
{!../../docs_src/first_steps/tutorial001.py!}
```

	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	defer rc.Close()

	_, err = xioutil.Copy(w, rc)
	if !xnet.IsNetworkOrHostDown(err, true) { // do not need to log disconnected clients
		storageLogIf(r.Context(), err)
	}
}

// ListDirHandler - list a directory.
func (s *storageRESTServer) ListDirHandler(ctx context.Context, params *grid.MSS, out chan<- *ListDirResult) *grid.RemoteErr {

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,tasks: Can raise exception for dependency, handled after response is sent
    Note over client,operation: Can raise HTTPException and can change the response

import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.lang.ThreadUtil;
import org.codelibs.core.misc.Tuple3;
import org.codelibs.fess.Constants;
import org.codelibs.fess.es.client.SearchEngineClient;
import org.codelibs.fess.es.config.exbhv.ThumbnailQueueBhv;
import org.codelibs.fess.es.config.exentity.ThumbnailQueue;
import org.codelibs.fess.exception.FessSystemException;

   * response, or null if this response wasn't triggered by an automatic retry. The body of the
   * returned response should not be read because it has already been consumed by the redirecting
   * client.
   */
  @get:JvmName("priorResponse") val priorResponse: Response?,
  /**
   * Returns a [timestamp][System.currentTimeMillis] taken immediately before OkHttp

/* jcifs smb client library in Java
 * Copyright (C) 2000  "Michael B. Allen" <jcifs at samba dot org>
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,

import org.codelibs.fess.crawler.service.impl.EsDataService;
import org.codelibs.fess.crawler.transformer.Transformer;
import org.codelibs.fess.crawler.util.EsResultList;
import org.codelibs.fess.es.client.SearchEngineClient;
import org.codelibs.fess.es.log.exbhv.ClickLogBhv;
import org.codelibs.fess.es.log.exbhv.FavoriteLogBhv;
import org.codelibs.fess.exception.ContainerNotAvailableException;

 * used; or if the class exposes a public parameter-less constructor then it will be "new"d and
 * returned.
 *
 * <p>All default instances returned by {@link #get} are generics-safe. Clients won't get type
 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.
 * Immutable empty instances are returned for collection types; {@code ""} for string; {@code 0} for