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https://lepidum.co.jp/
HTTP/2:
ぼくたちのWebは
どう変わるのか
株式会社レピダム
前田 薫 (@mad_p)
TechLion vol. 23 2015/10/20
TechLion vol.23
https://lepidum.co.jp/
自己紹介
 名前
 前田 薫 @mad_p
 所属
 株式会社レピダム
シニアプログラマ
マネージャ
 コミュニティー活動
 Lightweight Language
 Identit...
http2.info
みなさん、
HTTP/2使っていますか?
https://lepidum.co.jp/
だいたいみんな使えているはず
http://caniuse.com/#feat=http2
https://lepidum.co.jp/
HTTP/2の特徴
 HTTP/1.1のセマンティクスを保持
 バイナリープロトコル
 マルチプレキシング(stream, frame)
 ヘッダ圧縮
 フロー制御
 プライオリティー
...
https://lepidum.co.jp/
HTTP/2とブラウザ体験
 Webページの描画が早くなる
 Webページを構成する要素の取得
 index.html、javascript、CSS、アイコン
 HTTPリクエストの通信が速...
問題:
HTTP/2に移行するべき?
https://lepidum.co.jp/
HTTP/2のメリット/デメリット
 ○ページの表示が速くなる
 これだけでビジネスメリット
 ○TCP接続数が少なくなる
 フロントサーバー数が削減できる
 △対応サーバーへの移行(Ap...
https://lepidum.co.jp/
HTTP/2への移行で考えること(1/2)
 HTTP/1.1時代の「工夫」のundo
 CSSスプライト
 インライニング
 ドメインシャーディング
 HTTP/2で可能になる最適化
...
https://lepidum.co.jp/
HTTP/2への移行で考えること(2/2)
 アプリからのAPIアクセス
 ミドルウエアのHTTP/2対応
 バックエンド通信のHTTP/2化?
 双方向通信
 websocketは使えな...
https://lepidum.co.jp/
HTTP/2の今後
 プロトコルの拡張仕様
 ALT-Svc, OppSec
 webpush
 (websocket???)
 HTTPの今後 (HTTP/3)
 アイディアを挙げてい...
https://lepidum.co.jp/
トランスポートの改良
 QUIC
 Googleで開発、実装している
 UDPベースの通信
 IETFにはHTTP/2の通信レイヤとして提案
 draft-tsvwg-quic-proto...
https://lepidum.co.jp/
QUIC as HTTP transport
IETF93報告会2015/08/27
https://httpworkshop.github.io/workshop/presentations/iy...
https://lepidum.co.jp/
QUICの特徴
 TCP + TLS + SPDY を UDP で
 TLS/TCPの接続確立を0-RTT, 1-RTTで
 パケットロスと再送の工夫
 Stream/Connectionレ...
https://lepidum.co.jp/
SPUD
TechLion vol.23
 通信の性質など、アプリ
とmiddleboxの間で情報
をやりとりできる仕組み
https://www.ietf.org/proceedings/92/...
https://lepidum.co.jp/
Any Questions? / Please Feedback!
https://lepidum.co.jp/
mailto:maeda@lepidum.co.jp / twitter: @mad...
HTTP/2: ぼくたちのWebはどう変わるのか
HTTP/2: ぼくたちのWebはどう変わるのか
HTTP/2: ぼくたちのWebはどう変わるのか
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HTTP/2: ぼくたちのWebはどう変わるのか

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TechLion vol. 23でHTTP/2についてゆるーく話しました。

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HTTP/2: ぼくたちのWebはどう変わるのか

  1. 1. https://lepidum.co.jp/ HTTP/2: ぼくたちのWebは どう変わるのか 株式会社レピダム 前田 薫 (@mad_p) TechLion vol. 23 2015/10/20 TechLion vol.23
  2. 2. https://lepidum.co.jp/ 自己紹介  名前  前田 薫 @mad_p  所属  株式会社レピダム シニアプログラマ マネージャ  コミュニティー活動  Lightweight Language  Identity Conference  http2study  業務領域  認証・認可、デジタル アイデンティティー、 プライバシー  標準化支援  ソフトウェアセキュリ ティー、脆弱性 TechLion vol.23
  3. 3. http2.info
  4. 4. みなさん、 HTTP/2使っていますか?
  5. 5. https://lepidum.co.jp/ だいたいみんな使えているはず http://caniuse.com/#feat=http2
  6. 6. https://lepidum.co.jp/ HTTP/2の特徴  HTTP/1.1のセマンティクスを保持  バイナリープロトコル  マルチプレキシング(stream, frame)  ヘッダ圧縮  フロー制御  プライオリティー  サーバープッシュ
  7. 7. https://lepidum.co.jp/ HTTP/2とブラウザ体験  Webページの描画が早くなる  Webページを構成する要素の取得  index.html、javascript、CSS、アイコン  HTTPリクエストの通信が速くなる  接続済のTLSを使ってリクエスト  最初に見たいものを優先して取得  プライオリティー、サーバープッシュ  特に遅いネットワークで差が出る TechLion vol.23
  8. 8. 問題: HTTP/2に移行するべき?
  9. 9. https://lepidum.co.jp/ HTTP/2のメリット/デメリット  ○ページの表示が速くなる  これだけでビジネスメリット  ○TCP接続数が少なくなる  フロントサーバー数が削減できる  △対応サーバーへの移行(Apache, nginx, ...)  △TLS前提  TLS1.2、TLS1.3(予定)への対応、証明書の準備  △リバースプロキシ製品の対応待ち
  10. 10. https://lepidum.co.jp/ HTTP/2への移行で考えること(1/2)  HTTP/1.1時代の「工夫」のundo  CSSスプライト  インライニング  ドメインシャーディング  HTTP/2で可能になる最適化  リソース取得のプライオリティー  ブラウザの対応待ちという面も  サーバープッシュの活用  必要なリソースをキャッシュに送り込む TechLion vol.23
  11. 11. https://lepidum.co.jp/ HTTP/2への移行で考えること(2/2)  アプリからのAPIアクセス  ミドルウエアのHTTP/2対応  バックエンド通信のHTTP/2化?  双方向通信  websocketは使えなくなる  XHRはhttp/2になる  gRPC? TechLion vol.23
  12. 12. https://lepidum.co.jp/ HTTP/2の今後  プロトコルの拡張仕様  ALT-Svc, OppSec  webpush  (websocket???)  HTTPの今後 (HTTP/3)  アイディアを挙げていく段階  https://github.com/HTTPWorkshop/workshop/wiki/HTTP-Ideas  「httpworkshop http ideas」で検索
  13. 13. https://lepidum.co.jp/ トランスポートの改良  QUIC  Googleで開発、実装している  UDPベースの通信  IETFにはHTTP/2の通信レイヤとして提案  draft-tsvwg-quic-protocol-01  IP Stack Evolution Program (IAB)  トランスポートを見直そうという取組  SPUD TechLion vol.23
  14. 14. https://lepidum.co.jp/ QUIC as HTTP transport IETF93報告会2015/08/27 https://httpworkshop.github.io/workshop/presentations/iyengar-quic.pdf
  15. 15. https://lepidum.co.jp/ QUICの特徴  TCP + TLS + SPDY を UDP で  TLS/TCPの接続確立を0-RTT, 1-RTTで  パケットロスと再送の工夫  Stream/Connectionレベルのフロー制御  (FEC: forward error correction)  (Connection Mobility)  (マルチパス) IETF93報告会2015/08/27
  16. 16. https://lepidum.co.jp/ SPUD TechLion vol.23  通信の性質など、アプリ とmiddleboxの間で情報 をやりとりできる仕組み https://www.ietf.org/proceedings/92/slides/slides-92-iab-techplenary-3.pdf
  17. 17. https://lepidum.co.jp/ Any Questions? / Please Feedback! https://lepidum.co.jp/ mailto:maeda@lepidum.co.jp / twitter: @mad_p TechLion vol.23

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