稍后，对于您的产品级别的应用程序，您可能会要使用像**PostgreSQL**这样的数据库服务器。

!!! tip
    这儿有一个**FastAPI**和**PostgreSQL**的官方项目生成器，全部基于**Docker**，包括前端和更多工具：<a href="https://github.com/tiangolo/full-stack-fastapi-postgresql" class="external-link" target="_blank">https://github.com/tiangolo/full-stack-fastapi-postgresql</a>

!!! note
    请注意，大部分代码是`SQLAlchemy`的标准代码，您可以用于任何框架。FastAPI特定的代码和往常一样少。

## ORMs（对象关系映射）

**FastAPI**可与任何数据库在任何样式的库中一起与 数据库进行通信。

### IPv4/IPv6 run

IPv4/IPv6 dual-stack has been reimplemented for 1.20 to support dual-stack Services, based on user and community feedback. If your cluster has dual-stack enabled, you can create Services which can use IPv4, IPv6, or both, and you can change this setting for existing Services. Details are available in updated [IPv4/IPv6 dual-stack docs](https://docs.k8s.io/concepts/services-networking/dual-stack/), which cover the nuanced array of options.

* **ElasticSearch** など。

!!! tip "豆知識"
    **FastAPI**と**Couchbase**を使った公式プロジェクト・ジェネレータがあります。すべて**Docker**ベースで、フロントエンドやその他のツールも含まれています: <a href="https://github.com/tiangolo/full-stack-fastapi-couchbase" class="external-link" target="_blank">https://github.com/tiangolo/full-stack-fastapi-couchbase</a>

## Couchbase コンポーネントの Import

まずはImportしましょう。今はその他のソースコードに注意を払う必要はありません。

```Python hl_lines="3-5"

pkg syscall (netbsd-386), const MAP_RENAME ideal-int
pkg syscall (netbsd-386), const MAP_SHARED = 1
pkg syscall (netbsd-386), const MAP_SHARED ideal-int
pkg syscall (netbsd-386), const MAP_STACK = 8192
pkg syscall (netbsd-386), const MAP_STACK ideal-int
pkg syscall (netbsd-386), const MAP_TRYFIXED = 1024
pkg syscall (netbsd-386), const MAP_TRYFIXED ideal-int
pkg syscall (netbsd-386), const MAP_WIRED = 2048

- `-- kube-controller-manager`
  `--node-cidr-mask-size-ipv4 int32`     Default: 24. Mask size for IPv4 node-cidr in dual-stack cluster.
`--node-cidr-mask-size-ipv6 int32`     Default: 64. Mask size for IPv6 node-cidr in dual-stack cluster.

    These 2 flags can be used only for dual-stack clusters. For non dual-stack clusters, continue to use  `--node-cidr-mask-size` flag to configure the mask size.

- Graduated HorizontalPodAutoscaler support for per-container metrics to stable. ([#123482](https://github.com/kubernetes/kubernetes/pull/123482), [@sanposhiho](https://github.com/sanposhiho))

  it is definitely useful to define what the offline state really means.

  [[1]] This is obvious, but the network/internet is unavailable.

  [[2]] Localhost (127.0.0.1) may also be unavailable if the whole
        network stack is offline.

  [[3]] "Remote" repositories referenced using the file:// protocol may
        be available. However, if that file:// url references a
        file-share, as in the case of an NFS or SMB mount, that will

profile](/pkg/runtime/pprof#Profile). Contention on these locks is always
reported at `runtime._LostContendedRuntimeLock`. Complete stack traces of
runtime locks can be enabled with the [`runtimecontentionstacks`
setting](/pkg/runtime#hdr-Environment_Variable). These stack traces have
non-standard semantics, see setting documentation for details.

Go 1.22 added a new [`crypto/x509.Certificate`](/pkg/crypto/x509/#Certificate)

- Kube-proxy: on dual-stack mode, if it is not able to get the IP Family of an endpoint, logs it with level InfoV(4) instead of Warning, avoiding flooding the logs for endpoints without addresses ([#88934](https://github.com/kubernetes/kubernetes/pull/88934), [@aojea](https://github.com/aojea)) [SIG Network]

pkg syscall (freebsd-386), const MAP_RESERVED0100 ideal-int
pkg syscall (freebsd-386), const MAP_SHARED = 1
pkg syscall (freebsd-386), const MAP_SHARED ideal-int
pkg syscall (freebsd-386), const MAP_STACK = 1024
pkg syscall (freebsd-386), const MAP_STACK ideal-int
pkg syscall (freebsd-386), const MCL_CURRENT = 1
pkg syscall (freebsd-386), const MCL_CURRENT ideal-int
pkg syscall (freebsd-386), const MCL_FUTURE = 2