{* ../../docs_src/server_sent_events/tutorial005_py310.py hl[14] *}

## Détails techniques { #technical-details }

FastAPI met en œuvre certaines bonnes pratiques SSE prêtes à l’emploi.

                return host + "/"; // mimic the JVM behaviour for root or server
            }
            if (path.endsWith("/")) {
                return path.substring(0, path.length()); // keep trailing slash
            }
            String[] parts = path.split("/");
            return parts[parts.length - 1];
        }

        @Override
        public String getParent() {

Let's continue from the previous example. We wanted to **annotate the function with one type**, but we wanted to be able to return from the function something that actually includes **more data**.

We want FastAPI to keep **filtering** the data using the response model. So that even though the function returns more data, the response will only include the fields declared in the response model.

        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our
        users indicates that they really appreciate Guava's high power-to-weight ratio. It's
        important to us to keep Guava as easy to use and understand as we can. That means boiling
        features down to compact but powerful abstractions, and controlling feature bloat carefully.

Translate to Spanish (español).

Use the informal grammar (use "tú" instead of "usted").

For instructions or titles in imperative, keep them in imperative, for example "Edit it" to "Edítalo".

---

For the next terms, use the following translations:

* framework: framework (do not translate to "marco")
* performance: rendimiento
* program (verb): programar
* code (verb): programar
* type hints: anotaciones de tipos

Just use any kind of model, any kind of class, any kind of database that you need for your application. **FastAPI** has you covered with the dependency injection system.

## Code size { #code-size }

This example might seem verbose. Keep in mind that we are mixing security, data models, utility functions and *path operations* in the same file.

But here's the key point.

The security and dependency injection stuff is written once.

- [HTML spesifikasyonu: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes) önerisine uygun olarak, bazı proxy'lerin bağlantıyı kapatmasını önlemek için, 15 saniye boyunca hiç mesaj gelmezse **"keep alive" `ping` yorumu** gönderir.
- Akışın **cache'lenmesini önlemek** için `Cache-Control: no-cache` header'ını ayarlar.
- Nginx gibi bazı proxy'lerde **buffering'i önlemek** için özel `X-Accel-Buffering: no` header'ını ayarlar.

## Технические детали { #technical-details }

FastAPI из коробки реализует некоторые лучшие практики для SSE.

            noMoreParts = true
            return null
          }

          2, 3 -> {
            // " " or "\t" Ignore whitespace and keep looking.
            whitespace = true
            continue@afterBoundaryLoop
          }

          -1 -> {
            throw ProtocolException("unexpected characters after boundary")
          }
        }

// `ZerosLike` is not expected to be called and returns a nullptr. The creation
// of default zeros grads is handled by the `DefaultGradientFunction` registered
// for each op.
// TODO(srbs): We need to define `ZerosLike` here to keep the compiler happy.
// Figure out a way to avoid this.
// TODO(srbs): Should ZerosLike check-fail instead of returning nullptr?
class TapeTensor {
 public:
  explicit TapeTensor(AbstractTensorHandle* handle);