May 2019
Intermediate to advanced
464 pages
9h 22m
Japanese
Content preview from Node.jsデザインパターン 第2版
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384
11
章 メッセージ通信と統合
11.2.2
メッセージブローカとしての
Redis
の使用
もっとも重要な
pub/sub
パターンの実装の解析には、まず
Redis
（
http://redis.io
）を導入します。こ
れはとても高速で柔軟性のある「キーと値」対の保管庫であり、多くの人によって「データ構造サーバ
（
data structure server
）」とも定義されています。
Redis
はメッセージブローカというよりもむしろデー
タベースなのですが、多くの機能に加えて一元化した
pub/sub
パターンの実装を特別に目的とした一
対のコマンドを備えています。
高度なメッセージ指向ミドルウェアに比べると、これは確かにごく単純で基本的なものですが、そ
のこと自体が広く使われている主な理由のひとつです。事実、
Redis
はキャッシュサーバやセッション
保管庫などとして既存のインフラの中に既に組み込まれています。その速度と柔軟性から、
Redis
は分
散システ
ムでデータを共有するための選択肢としてとても人気があります。ですからプロジェクトで
パブリッシュ
/
サブスクライブ型ブローカが必要になったら、もっとも単純で手っ取り早い選択肢は、
Redis
自体を再利用し、専用メッセージブローカのインストールと保守を不要にすることです。その単
純さと威力を実証する例に取りかかりましょう。
この例では、
Redis
がインストールされていてデフォルトポートをリッスンしている必要
があります。詳しくは
http://redis.io/topics/quickstart ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.