September 2011
Intermediate to advanced
612 pages
15h 48m
Japanese
Content preview from Making Software ―エビデンスが変えるソフトウェア開発
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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.
170
10
章 アーキテクティング：いつ、どれだけ
?
につれ、明らかに減少すると分かります。そして、大規模なプロジェクトほど、低い
RESL
評価レベ
ルでは改善対象となる手戻りのレベルが高いため、
ROI
の増分が大きく、
RESL
評価レベルが高くなっ
てきても
ROI
の増分が正であり続けます。これらの結果をグラフにしたものが図
10-9
です。■
結局アーキテクティングはどれだけやれば十分か
?
前節における計算に基づいて、プロジェクトプランニングの中核にある表記の疑問に対し、大まかな
答えを得ることができます。
この分析の動機になったプロジェクトは
10,000KSLOC
を超える非常に大きなソフトウェアプロジェ
クトであり、
RFPs
（
Requests for Proposals
）に製造計画と仕様を加える前の段階においてシステムアー
キテクチャとリスク解決に十分な時間を取れないというリスクを侵してでも、製造業者に急いで作業に
取り掛かって欲しいという事情がありました。このプロ
ジェクトでは、製造業者が互換性のない部品を
供給し、それによる手戻りのためにスケジュールが遅延するというリスクと、システムアーキテクティ
ングやリスク解決に時間を掛けたため、製造業者が部品を開発するのに十分な期間が残らないというリ
スクとの間で「スイートスポット」を見つける必要があったのです。
それぞれの
RESL
評価レベル（アーキテクティングに対する投資の比率）
ごとの影響を、
10KSLOC
、
100KSLOC
、
10,000KSLOC
のプロジェクトサイズに対して示したものが、 ...
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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.