## Changelog since v1.11.0

### Action Required

 [major_versions]: https://jakewharton.com/java-interoperability-policy-for-major-version-updates/
 [maven_provided]: https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html
 [nginx_959]: https://trac.nginx.org/nginx/ticket/959
 [obsolete_apache_client]: https://gist.github.com/swankjesse/09721f72039e3a46cf50f94323deb82d

// APIErrorCode type of error status.
type APIErrorCode int

//go:generate stringer -type=APIErrorCode -trimprefix=Err $GOFILE

// Error codes, non exhaustive list - http://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
const (
	ErrNone APIErrorCode = iota
	ErrAccessDenied
	ErrBadDigest
	ErrEntityTooSmall
	ErrEntityTooLarge
	ErrPolicyTooLarge
	ErrIncompleteBody
	ErrInternalError
	ErrInvalidAccessKeyID

* Change the default kubeadm bootstrap token TTL from infinite to 24 hours. This is a breaking change. If you require the old behavior, use `kubeadm init --token-ttl 0` / `kubeadm token create --ttl 0`. ([#48783](https://github.com/kubernetes/kubernetes/pull/48783), [@mattmoyer](https://github.com/mattmoyer))

### Other notable changes

Some upgrade methods might upgrade etcd from 3.0 to 3.1 automatically when you upgrade from Kubernetes 1.8, unless you specify otherwise. Because [etcd does not support downgrading](https://coreos.com/etcd/docs/latest/upgrades/upgrade_3_1.html), you'll need to either remain on etcd 3.1 or restore from a backup if you want to downgrade back to Kubernetes 1.8.

## Introduction to 1.9.0

	return req, err
}

// preSignV4 presign the request, in accordance with
// http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-query-string-auth.html.
func preSignV4(req *http.Request, accessKeyID, secretAccessKey string, expires int64) error {
	// Presign is not needed for anonymous credentials.
	if accessKeyID == "" || secretAccessKey == "" {

- github.com/opencontainers/runc: [v1.0.1 → v1.0.2](https://github.com/opencontainers/runc/compare/v1.0.1...v1.0.2)
- github.com/pelletier/go-toml: [v1.2.0 → v1.9.3](https://github.com/pelletier/go-toml/compare/v1.2.0...v1.9.3)
- github.com/prometheus/common: [v0.26.0 → v0.28.0](https://github.com/prometheus/common/compare/v0.26.0...v0.28.0)

Pythonのフレームワークの中で最もポピュラーで、広く信頼されています。Instagramのようなシステムの構築に使われています。

リレーショナルデータベース (MySQLやPostgreSQLなど) と比較的強固に結合されているので、NoSQLデータベース (Couchbase、MongoDB、Cassandraなど) をメインに利用することは簡単ではありません。

バックエンドでHTMLを生成するために作られたものであり、現代的なフロントエンド (ReactやVue.js、Angularなど) や、他のシステム (IoTデバイスなど) と通信するAPIを構築するために作られたものではありません。

### <a href="https://www.django-rest-framework.org/" class="external-link" target="_blank">Django REST Framework</a>

    * A new `k8s_external` plugin that allows external zones to point to Kubernetes in-cluster services.
    * CoreDNS now checks if a zone transfer is allowed. Also allow a TTL of 0 to avoid caching in the cache plugin.
    * TTL is also applied to negative responses (NXDOMAIN, etc).

erenter","pointerleave","orig","related","rnoInnerhtml","rchecked","rcleanScript","manipulationTarget","disableScript","restoreScript","cloneCopyEvent","dest","udataOld","udataCur","domManip","collection","hasScripts","iNoClone","valueIsFunction","html","_evalUrl","keepData","cleanData","dataAndEvents","deepDataAndEvents","srcElements","destElements","inPage","detach","append","prepend","insertBefore","before","after","replaceWith","replaceChild","appendTo","prependTo","insertAfter","replaceAll"...