February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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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.
130
4 章 データベース接続
quotes_multi.js
if (params.author && params.quote) {
var randKey = "Quotes:" + (Math.random() * Math.random()).toString(16).replace('.', '');
client.multi()
.hmset(randKey, {
"author": params.author,
"quote": params.quote
})
.sadd('Author:' + params.author, randKey)
.exec(function (err, replies) {
if (err) { throw err; }
if (replies[0] == 'OK') { console.log('
追加されました
'); }
});
}
quotes.js
に記述されている
hmset
と
sadd
メソッドを、
client.multi
メソッドにチェーンして
います。チェーンの最後に
exec
メソッドを呼び、チェーンしたコマンドを実行し、戻り値をチェッ
クして正常に終了したかどうかを判断しています。
smembers
は
multi
にチェーンしませんでした。
quote
が格納されてから
smembers
を呼び出さな
いと、チェーンの
sadd
で追加した名言が表示されないからです。
smembers
をチェーンした場合
は、コマンドが
Redis
に送信されると、
HMSET
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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.