* **Uvicorn**:
    * 具有最佳性能，因为除了服务器本身外，它没有太多额外的代码。
    * 你不会直接在 Uvicorn 中编写应用程序。这意味着你的代码至少必须包含 Starlette（或 **FastAPI**）提供的代码。如果你这样做了（即直接在 Uvicorn 中编写应用程序），最终的应用程序会和使用了框架并且最小化了应用代码和 bug 的情况具有相同的性能损耗。
    * 如果你要对比 Uvicorn，请将其与 Daphne，Hypercorn，uWSGI 等应用服务器进行比较。
* **Starlette**:
    * 性能仅次于 Uvicorn。实际上，Starlette 使用 Uvicorn 运行。因此，由于必须执行更多的代码，它只会比 Uvicorn 更慢。
    * 但它为你提供了构建简单的网络程序的工具，并具有基于路径的路由等功能。

```


Advanced Profiling
------------------

Android Studio’s Advanced Profiling feature rewrites OkHttp bytecode for instrumentation.
Unfortunately it crashes on OkHttp 4.x’s bytecode. Until [Google’s bug][advanced_profiling_bug] is
fixed you must disable advanced profiling in Android Studio.

![Disable Advanced Profiling](../assets/images/******@****.***)


R8 / ProGuard
-------------

							<goal>check</goal>
						</goals>
					</execution>
				</executions>
				<configuration>
					<failOnError>false</failOnError>
					<ignored>
						<difference>
							<!-- seems to be a clirr bug that it cannot handle the different inherited 
								return types -->
							<className>**</className>
							<differenceType>7006</differenceType>
							<method>*</method>
							<from>*</from>
							<to>*</to>

   * inputs, regardless of how the elements are divided.
   */
  @SafeVarargs
  @CanIgnoreReturnValue
  @SuppressWarnings("nullness") // TODO(cpovirk): Remove after we fix whatever the bug is.
  public final CollectorTester<T, A, R> expectCollects(R expectedResult, T... inputs) {
    List<T> list = Arrays.asList(inputs);
    doExpectCollects(expectedResult, list);

      val reference = references[i]

      if (reference.get() != null) {
        i++
        continue
      }

      // We've discovered a leaked call. This is an application bug.
      val callReference = reference as CallReference
      val message =
        "A connection to ${connection.route().address.url} was leaked. " +
          "Did you forget to close a response body?"

    // backward map ordered by country (even for currency values)
    assertThat(bimap.inverse().values()).containsExactly(Currency.DOLLAR, Currency.PESO).inOrder();
  }

  public void testEntrySet() {
    // Bug 3168290
    Map<Currency, Country> map =
        ImmutableMap.of(
            Currency.DOLLAR, Country.CANADA,
            Currency.PESO, Country.CHILE,
            Currency.FRANC, Country.SWITZERLAND);

      } catch (NullPointerException tolerated) {
      }
    } else {
      try {
        entrySet.retainAll(null);
        // We have to tolerate a successful return (Sun bug 4802647)
      } catch (UnsupportedOperationException | NullPointerException e) {
        // Expected.
      }
    }
    assertInvariants(map);
  }

  public void testEntrySetClear() {

      cp >>>= 4;
      dest[4] = upperHexDigits[0x8 | (cp & 0x3)];
      cp >>>= 2;
      dest[2] = upperHexDigits[cp & 0x7];
      return dest;
    } else {
      // If this ever happens it is due to bug in UnicodeEscaper, not bad input.
      throw new IllegalArgumentException("Invalid unicode character value " + cp);
    }
  }

  }

  public void testBuilder_presize_negative() {
    assertThrows(IllegalArgumentException.class, () -> ImmutableIntArray.builder(-1));
  }

  /**
   * If there's a bug in builder growth, we wouldn't know how to expose it. So, brute force the hell
   * out of it for a while and see what happens.
   */
  public void testBuilder_bruteForce() {

        assertFalse(pattern.matcher("application/xml").matches());
    }

    @Test
    public void test_unescapedPlusDoesNotMatch() {
        // Demonstrate the bug when + is not escaped
        // In regex, + means "one or more" of the previous character
        String wrongPattern = "(application/xhtml+xml|application/rdf+xml)";
        Pattern pattern = Pattern.compile(wrongPattern);