synchronized (this.LOCK) {
                    if (!isWINS(request.addr)) {
                        break;
                    }
                    /*
                     * Message was sent to WINS but
                     * failed to receive response.
                     * Try a different WINS server.
                     */
                    if (request.addr == getWINSAddress()) {

The important thing is that by using standard Python types, in a single place (instead of adding more classes, decorators, etc), **FastAPI** will do a lot of the work for you.

/// info

If you already went through all the tutorial and came back to see more about types, a good resource is <a href="https://mypy.readthedocs.io/en/latest/cheat_sheet_py3.html" class="external-link" target="_blank">the "cheat sheet" from `mypy`</a>.

		}
		if len(params) >= 2 {
			apiErr.Object = decodeDirObject(params[1])
		}
		return apiErr
	}
	return err
}

// SignatureDoesNotMatch - when content md5 does not match with what was sent from client.
type SignatureDoesNotMatch struct{}

func (e SignatureDoesNotMatch) Error() string {
	return "The request signature we calculated does not match the signature you provided. Check your key and signing method."

   * the state transitions.
   */
  private static final class ServiceListener extends Service.Listener {
    final Service service;
    // We store the state in a weak reference to ensure that if something went wrong while
    // constructing the ServiceManager we don't pointlessly keep updating the state.
    final WeakReference<ServiceManagerState> state;

   * <p><b>Warning:</b> a new random seed for these functions is chosen each time the {@code
   * Hashing} class is loaded. <b>Do not use this method</b> if hash codes may escape the current
   * process in any way, for example being sent over RPC, or saved to disk. For a general-purpose,
   * non-cryptographic hash function that will never change behavior, we suggest {@link
   * #murmur3_128}.
   *

		if resp.Update != nil {
			select {
			case <-ctx.Done():
			case updates <- *resp.Update:
			}
		}
		if resp.Final != nil {
			final = resp.Final
		}
		// We can't reuse the response since it is sent upstream.
		return nil
	})
	if err != nil {
		return cache, toStorageErr(err)
	}
	if final == nil {
		return cache, errors.New("no final cache")
	}
	return *final, nil
}

        end
        handler -->> client: HTTP error response
    end

    operation ->> client: Return response to client
    Note over client,operation: Response is already sent, can't change it anymore
    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> tasks: Handle exceptions in the background task code
    end

In this case, it would be better to get **one extra server** and run some processes on it so that they all have **enough RAM and CPU time**.

There's also the chance that for some reason you have a **spike** of usage of your API. Maybe it went viral, or maybe some other services or bots start using it. And you might want to have extra resources to be safe in those cases.

		// requests.
		spBytes, err := base64.StdEncoding.DecodeString(sp)
		if err != nil {
			// Base64 decoding fails, we should log to indicate
			// something is malforming the request sent by client.
			authNLogIf(GlobalContext, err, logger.ErrorKind)
			return nil, errAuthentication
		}
		claims.MapClaims[sessionPolicyNameExtracted] = string(spBytes)
	}

	return claims, nil
}

  - When registering with a 1.17+ API server, a CustomResourceDefinition conversion webhook can now request that only `v1` ConversionReview requests be sent to them. Previously, conversion webhooks were required to support receiving `v1beta1` ConversionReview...