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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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.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.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.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.
360
10
章 スケーラビリティとアーキテクチャ
しやすくなっています。たとえば、製品が購入された場合を考えましょう。「チェックアウト」モジュー
ルは「製品」オブジェクトの在庫情報を更新しなければなりませんが、両方のモジュールが同じアプリ
ケーション内にあれば、開発者にとって該当する製品のオブジェクトの参照を取得し、在庫を直接更
新することが簡単にできすぎてしまうのです。モノリシックなアプリケーションでは、内部のモジュー
ルの間の結合度を低く保つというのは至難の技ですが、その理由にはモジュールの境界が必ずしも明
確でなかったり取り扱いがきちんと強制されていなかったりすることが含まれます。
アプリケーションの規模拡大にとって、しばしば「結合度の高さ」が障害となっており、複雑なため
にスケーリングができなくなることがあります。実際、依存グラフが複雑に絡みあっているということ
は、システムのすべての部分が関連するということです。アプリケーションは寿命が来るまで
保守が必
要となりますから、どのような変更をするときでも慎重に検討しなければならなくなります。すべての
コンポーネントが積み木のタワーのようなもので、ひとつを動かしたり除去したりするとタワー全体が
崩れてしまうかもしれないからです。その結果、プロジェクトが複雑になるに従って、それに対応する
ための慣例や開発プロセスを作成することになります。
10.3.2
マイクロサービスのアーキテクチャ
それではこれから大規模なアプリケーションを書く際にもっとも重要な
Node ...
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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.