February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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170
6 章 Express で開発をスピードアップ
app.js
app.configure('production', function() {
app.set('port', 8000);
});
解説
Express
は、
app.configure
でワークフローごとの設定を分離する機能を提供します。環境名の
文字列を渡すだけで、環境に応じた設定を使い分けることができます。
Express
は環境名を判断するために、
process.env
を利用して
NODE_ENV
環境変数の取得を試み
ます。
NODE_ENV
が設定されている場合はその値を、設定されていない場合はデフォルト値として
development
を使用します。
NODE_ENV
環境変数に
production
を設定してアプリケーションを起動するには、以下のコマンド
を実行します。
% NODE_ENV=production node app.js
NODE_ENV
環境変数に永続的に値を設定したい場合は、ミニレシピ
6.2.2
を参照してください。
関連するレシピ
●
「レシピ
6.1
Express
プロジェクトを作成する」
●
「レシピ
6.6
Express
によるセッション管理」
●
「レシピ
6.7
Express
で
Web
アプリケーションを構築する」
●
「レシピ
10.1
アプリケーションを
80
番ポートで待機させる」
ミニレシピ
6.2.1
新たな環境を設定する
アプリケーションの開発中は、本番環境では使用しない特別な設定を行うことによって、よりス
ムーズに作業を行うことができます。例えば、本番環境に近いステージング環境の設定を開発用マ ...
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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.