App->>App: Produce Item 3
    Client->>Client: Process Item 2
    App->>Client: Send Item 3
    Client->>Client: Process Item 3
    Note over App: Keeps producing...
    Note over Client: Keeps consuming...
```

It could even be an infinite stream, where you keep sending data.

## JSON Lines { #json-lines }

In these cases, it's common to send "**JSON Lines**", which is a format where you send one JSON object per line.

   *
   * Even if no other references to classes from the application class loader remain, the Finalizer
   * thread keeps an indirect strong reference to the queue in ReferenceMap, which keeps the
   * Finalizer running, and as a result, the application class loader can never be reclaimed.
   *
   * This means that dynamically loaded web applications and OSGi bundles can't be unloaded.

For example, when you type `python` in the terminal, the operating system looks for a program called `python` in the **first directory** in that list.

If it finds it, then it will **use it**. Otherwise it keeps looking in the **other directories**.

### Installing Python and Updating the `PATH` { #installing-python-and-updating-the-path }

   *
   * Even if no other references to classes from the application class loader remain, the Finalizer
   * thread keeps an indirect strong reference to the queue in ReferenceMap, which keeps the
   * Finalizer running, and as a result, the application class loader can never be reclaimed.
   *
   * This means that dynamically loaded web applications and OSGi bundles can't be unloaded.

Those two tasks are what **consume time the most**. That's the main work of maintaining FastAPI.

If you can help me with that, **you are helping me maintain FastAPI** and making sure it keeps **advancing faster and better**. 🚀

## Join the chat { #join-the-chat }

Join the 👥 [Discord chat server](https://discord.gg/VQjSZaeJmf) 👥 and hang out with others in the FastAPI community.

/// tip

    }

    @Keep
    protected void protectedOneArg(String s) {
      checkNotNull(s);
    }

    @Keep
    public void oneNullableArg(@Nullable String s) {}

    @Keep
    public void oneNullableArgThrows(@Nullable String s) {
      doThrow(s);
    }

    @Keep
    public void twoArg(String s, Integer i) {
      checkNotNull(s);
      i.intValue();
    }

    @Keep

3. Set a convention in a constructor

Most properties should have a convention set, so (1) can be treated as a rare case where a value must be provided by a user.

With fast fallback, OkHttp attempts to connect to multiple web servers concurrently. It keeps whichever route connects first and cancels all of the others. Its rules are:

 * Prefer to alternate IP addresses from different address families, (IPv6 / IPv4), starting with IPv6.
 * Don't start a new attempt until 250 ms after the most recent attempt was started.
 * Keep whichever TCP connection succeeds first and cancel all the others.

    A;

    @Keep
    public void failToCheckNull(String s) {}
  }

  private interface AnInterface {}

  private abstract static class AnAbstractClass {
    @Keep
    public AnAbstractClass(String s) {}

    @Keep
    public void failsToCheckNull(String s) {}
  }

  private static class NoPublicStaticMethods {
    @Keep // To test non-public factory isn't used.

          "woo.com.",
          "www",
          "x",
          ALMOST_TOO_LONG,
          ALMOST_TOO_MANY_LEVELS
          // keep-sorted end
          );

  private static final ImmutableSet<String> INVALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          " ",
          "",
          ".",
          "..",
          "...",
          "..bar.com",
          "..quiffle.com",