from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: str | None = Query(default=None, title="Query string", min_length=3),
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

# Response – Statuscode ändern { #response-change-status-code }

Sie haben wahrscheinlich schon vorher gelesen, dass Sie einen Default-[Response-Statuscode](../tutorial/response-status-code.md){.internal-link target=_blank} festlegen können.

In manchen Fällen müssen Sie jedoch einen anderen als den Default-Statuscode zurückgeben.

## Anwendungsfall { #use-case }

Stellen Sie sich zum Beispiel vor, Sie möchten standardmäßig den HTTP-Statuscode „OK“ `200` zurückgeben.

import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.WorkspaceRepository;

/**
 * Default PluginCache implementation. Assumes cached data does not change.
 */
@Named
@Singleton
public class DefaultPluginRealmCache implements PluginRealmCache, Disposable {
    /**
     * CacheKey
     */

		return sizeLessThan1MiB
	case size < 10*1024*1024:
		return sizeLessThan10MiB
	case size < 100*1024*1024:
		return sizeLessThan100MiB
	case size < 1024*1024*1024:
		return sizeLessThan1GiB
	default:
		return sizeGreaterThan1GiB
	}
}

func sizeTagToString(tag int) string {
	switch tag {
	case sizeLessThan1KiB:
		return "LESS_THAN_1_KiB"
	case sizeLessThan1MiB:
		return "LESS_THAN_1_MiB"

routing_key    (string)    routing key for publishing
mandatory      (on|off)    quietly ignore undelivered messages when set to 'off', default is 'on'
durable        (on|off)    persist queue across broker restarts when set to 'on', default is 'off'
no_wait        (on|off)    non-blocking message delivery when set to 'on', default is 'off'
internal       (on|off)    set to 'on' for exchange to be not used directly by publishers, but only when bound to other exchanges

from typing import Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Union[str, None] = Query(default=None, max_length=50)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

    // together and this really shows the problem of constructing a sensible default configuration, but
    // it's all encapsulated here so it appears normalized to the POM builder.

    // We are going to take the project packaging and find all plugin in the default lifecycle and create
    // fully populated Plugin objects, including executions with goals and default configuration taken
    // from the plugin.xml inside a plugin.
    //

///

## Den Defaultwert ändern { #changing-the-default }

 * model building, and other Maven operations.
 *
 * <p>Implementations of this interface can specify a list of remote repositories
 * to be used during the operation. If no repositories are specified (null),
 * the session's default remote repositories will be used. The repositories
 * are validated to ensure they don't contain duplicates or null entries.
 *
 * <p>Remote repositories are used for:
 * <ul>

# Object Lock and Immutability Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

MinIO server allows WORM for specific objects or by configuring a bucket with default object lock configuration that applies default retention mode and retention duration to all objects. This makes objects in the bucket immutable i.e. delete of the version are not allowed until an expiry specified in the bucket's object lock configuration or object retention.