{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[14:18] hl[14:15,17:18] *}

Использование настройки `check_same_thread=False` позволяет FastAPI использовать одну и ту же SQLite базу данных в различных потоках (threads). Это необходимо, когда **один запрос** использует **более одного потока** (например, в зависимостях).

            }
            return user.getUserId();
        }).ifPresent(p -> searchRequestBuilder.setPreference(p)).orElse(() -> LaRequestUtil.getOptionalRequest().map(r -> {
            final HttpSession session = r.getSession(false);
            if (session != null) {
                return session.getId();
            }
            final String preference = r.getParameter("preference");
            if (preference != null) {

## Виняток параметрів з OpenAPI

Щоб виключити параметр запиту зі згенерованої схеми OpenAPI (і, таким чином, з автоматичних систем документації), встановіть параметр `include_in_schema` для `Query` в `False`:

{* ../../docs_src/query_params_str_validations/tutorial014_an_py310.py hl[10] *}

## Кастомна валідація

An unsuccessful call has no synchronizing effect at all.
As far as the memory model is concerned,
<code>l.TryLock</code> (or <code>l.TryRLock</code>)
may be considered to be able to return false
even when the mutex <i>l</i> is unlocked.
</p>

<h3 id="once">Once</h3>

<p>
The <code>sync</code> package provides a safe mechanism for
initialization in the presence of multiple goroutines

* Changes secret, configMap, downwardAPI and projected volumes to mount read-only, instead of allowing applications to write data and then reverting it automatically. Until version 1.11, setting the feature gate ReadOnlyAPIDataVolumes=false will preserve the old behavior. ([#58720](https://github.com/kubernetes/kubernetes/pull/58720), [@joelsmith](https://github.com/joelsmith))

      for (Parameter param : Invokable.from(method).getParameters()) {
        if (!NullPointerTester.isPrimitiveOrNullable(param)) {
          return true;
        }
      }
    }
    return false;
  }

  /**
   * Tests the {@link Object#equals} and {@link Object#hashCode} of {@code cls}. In details:
   *
   * <ul>

   * any, specified by {@code endpoints}).
   *
   * <p>Unlike the other {@code EndpointPair}-accepting methods, this method does not throw if the
   * endpoints are unordered and the network is directed; it simply returns {@code false}. This is
   * for consistency with {@link Graph#hasEdgeConnecting(EndpointPair)} and {@link
   * ValueGraph#hasEdgeConnecting(EndpointPair)}.
   *
   * @since 27.1
   */

		}
		help = append(help, config.HelpKV{
			Key:         key,
			Description: fmt.Sprintf("enable %s target, default is 'off'", subSys),
			Optional:    false,
			Type:        "on|off",
		})
	}

	for _, hkv := range h {
		key := hkv.Key
		if envOnly {
			key = config.EnvPrefix + strings.ToTitle(subSys) + config.EnvWordDelimiter + strings.ToTitle(hkv.Key)
		}

      }
      return false;
    }

    @Override
    public boolean remove(@Nullable Object o) {
      if (o instanceof Map.Entry) {
        Map.Entry<?, ?> entry = (Map.Entry<?, ?>) o;
        return multimap().remove(entry.getKey(), entry.getValue());
      }
      return false;
    }

    @Override
    public void clear() {

      }
      return false;
    }

    @Override
    public boolean remove(@Nullable Object o) {
      if (o instanceof Map.Entry) {
        Map.Entry<?, ?> entry = (Map.Entry<?, ?>) o;
        return multimap().remove(entry.getKey(), entry.getValue());
      }
      return false;
    }

    @Override
    public void clear() {