# Object Lambda

**FastAPI** を使用すると本番用アプリケーションをすぐに作成できますが (すでに何度も経験しているかもしれませんが)、残りのコードが正しく動作するバージョンなのか確認しなければいけません。

## `fastapi` のバージョンを固定

最初にすべきことは、アプリケーションが正しく動作する **FastAPI** のバージョンを固定することです。

例えば、バージョン `0.45.0` を使っているとしましょう。

`requirements.txt` を使っているなら、以下の様にバージョンを指定できます:

```txt
fastapi==0.45.0
```

これは、厳密にバージョン `0.45.0` だけを使うことを意味します。

または、以下の様に固定することもできます:

```txt
fastapi>=0.45.0,<0.46.0
```

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector nodeTopology = 2;

  // storageClassName represents the name of the StorageClass that the reported capacity applies to.
  // It must meet the same requirements as the name of a StorageClass
  // object (non-empty, DNS subdomain). If that object no longer exists,
  // the CSIStorageCapacity object is obsolete and should be removed by its
  // creator.
  // This field is immutable.

 * `RESTRICTED_TLS` is a secure configuration, intended to meet stricter compliance requirements.
 * `MODERN_TLS` is a secure configuration that connects to modern HTTPS servers.
 * `COMPATIBLE_TLS` is a secure configuration that connects to secure–but not current–HTTPS servers.

It includes built in muxing of concurrent requests as well as congestion handling for streams.

Requests can be "Single Payload" or "Streamed".

Use the MinIO Grid for:

* Small, frequent requests with low latency requirements.
* Long-running requests with small/medium payloads.

Do *not* use the MinIO Grid for:

* Large payloads.

Only a single connection is ever made between two servers.

 *
 * @author Pete Gillin
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class PairedStatsAccumulator {

  // These fields must satisfy the requirements of PairedStats' constructor as well as those of the
  // stat methods of this class.
  private final StatsAccumulator xStats = new StatsAccumulator();
  private final StatsAccumulator yStats = new StatsAccumulator();

  // If the signer cannot issue the certificate, a condition of type "Failed" is added and this field remains empty.
  //
  // Validation requirements:
  //  1. certificate must contain one or more PEM blocks.
  //  2. All PEM blocks must have the "CERTIFICATE" label, contain no headers, and the encoded data

</p>

<p>
<b>Requirement 1</b>:
The memory operations in each goroutine must correspond to a correct sequential execution of that goroutine,
given the values read from and written to memory.
That execution must be consistent with the <i>sequenced before</i> relation,
defined as the partial order requirements set out by the <a href="/ref/spec">Go language specification</a>

        </field>
      </fields>
    </class>

    <class xdoc.anchorName="requirement">
      <name>Requirement</name>
      <version>1.0.0/1.1.0</version>
      <description>Describes a component requirement.</description>
      <!-- see o.a.m.plugin.descriptor.Requirement -->
      <fields>
        <field>
          <name>role</name>
          <required>true</required>

      return true // This connection is a perfect match.
    }

    // At this point we don't have a hostname match. But we still be able to carry the request if
    // our connection coalescing requirements are met. See also:
    // https://hpbn.co/optimizing-application-delivery/#eliminate-domain-sharding
    // https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/

    // 1. This connection must be HTTP/2.