作为人类，我们总是会犯**错误**。 软件几乎*总是*在不同的地方隐藏着**bug**。 🐛

作为开发人员，当我们发现这些bug并实现新功能（也可能添加新bug😅）时，我们会不断改进代码。

### 自动处理小错误

使用 FastAPI 构建 Web API 时，如果我们的代码中存在错误，FastAPI 通常会将其包含到触发错误的单个请求中。 🛡

对于该请求，客户端将收到 **500 内部服务器错误**，但应用程序将继续处理下一个请求，而不是完全崩溃。

### 更大的错误 - 崩溃

尽管如此，在某些情况下，我们编写的一些代码可能会导致整个应用程序崩溃，从而导致 Uvicorn 和 Python 崩溃。 💥

尽管如此，您可能不希望应用程序因为某个地方出现错误而保持死机状态，您可能希望它**继续运行**，至少对于未破坏的*路径操作*。

### 崩溃后重新启动

      assertThat(expected.message).isEqualTo("Invalid URL port: \"65536\"")
    }
  }

  @Test
  fun getReturns500() {
    server.enqueue(MockResponse(code = 500))
    executeSynchronously("/")
      .assertCode(500)
      .assertNotSuccessful()
  }

  @Test
  fun get_HTTP_2() {
    enableProtocol(Protocol.HTTP_2)
    get()
  }

  @Test
  fun get_HTTPS() {

Ao criar APIs da web com FastAPI, se houver um erro em nosso código, o FastAPI normalmente o conterá na única solicitação que acionou o erro. 🛡

O cliente receberá um **Erro Interno do Servidor 500** para essa solicitação, mas o aplicativo continuará funcionando para as próximas solicitações em vez de travar completamente.

### Erros maiores - Travamentos

nalEvent.pointerType.toUpperCase()]&&(e.touchDeltaX=t.originalEvent.clientX-e.touchStartX),e._handleSwipe(),"hover"===e._config.pause&&(e.pause(),e.touchTimeout&&clearTimeout(e.touchTimeout),e.touchTimeout=setTimeout(function(t){return e.cycle(t)},500+e._config.interval))};g(this._element.querySelectorAll(rt)).on(Y.DRAG_START,function(t){return t.preventDefault()}),this._pointerEvent?(g(this._element).on(Y.POINTERDOWN,function(t){return n(t)}),g(this._element).on(Y.POINTERUP,function(t){return i...

      String value = String.valueOf(i);
      builder.put(key, value);
      expected.put(key, value);
    }
    ImmutableMap<Integer, String> map = builder.buildKeepingLast();
    assertThat(map).hasSize(500);
    assertThat(map).containsExactlyEntriesIn(expected).inOrder();
  }

  // This method tests the int case.
  public void testBuildKeepingLast_bigTable() {

labels.facet_contentLength_10kto50k=10 KB - 50 KB
labels.facet_contentLength_50kto100k=50 KB - 100 KB
labels.facet_contentLength_100kto250k=100 KB - 250 KB
labels.facet_contentLength_250kto500k=250 KB - 500 KB
labels.facet_contentLength_1mto5m=1 MB - 5 MB
labels.facet_contentLength_5m=5 MB -  
labels.facet_filetype_archive=Archiv
labels.facet_filetype_bat=Batch-Skript
labels.facet_filetype_c=C

            return new String(new char[50_000]);
          }
        };
    List<Object> list = Collections.singletonList(object);
    for (int i = 0; i < 10; i++) {
      Object[] array = new Object[500];
      Arrays.fill(array, list);
      list = Arrays.asList(array);
    }
    future2.set(list);

    unused = future.toString();
  }

  public void testToString_notDone() throws Exception {

ence,i=e.placement.split('-')[0],r=Z,p=-1!==['top','bottom'].indexOf(i),s=p?'right':'bottom',d=p?'left':'top',a=p?'width':'height';return o[s]<r(n[d])&&(e.offsets.popper[d]=r(n[d])-o[a]),o[d]>r(n[s])&&(e.offsets.popper[d]=r(n[s])),e}},arrow:{order:500,enabled:!0,fn:function(e,o){var n;if(!K(e.instance.modifiers,'arrow','keepTogether'))return e;var i=o.element;if('string'==typeof i){if(i=e.instance.popper.querySelector(i),!i)return e;}else if(!e.instance.popper.contains(i))return console.warn('WARNING:...

	var epsResolved int
	var foundLocal bool
	resolvedList := make([]bool, len(endpoints))
	// Mark the starting time
	startTime := time.Now()
	keepAliveTicker := time.NewTicker(500 * time.Millisecond)
	defer keepAliveTicker.Stop()
	for {
		// Break if the local endpoint is found already Or all the endpoints are resolved.
		if foundLocal || (epsResolved == len(endpoints)) {
			break
		}

				time.Sleep(time.Duration(readRng.Intn(maxSleep)))
			}
		}
	}()

	// Writer
	{
		writeRng := rand.New(rand.NewSource(2))
		buf := make([]byte, 64<<10)
		for i := 0; i < 500; i++ {
			writeRng.Read(buf)
			// Write
			n, err := rb.Write(buf[:writeRng.Intn(len(buf))])
			if err != nil {
				t.Fatalf("write failed: %v", err)
			}
			wroteBytes += n
			wrote.Write(buf[:n])