Untitled
最初はユーザーの独自ドメインブログに A レコードを設定していたので、データセンターを変えるとき移動させることができず、いまもそれらの独自ドメインは Rackspace のサーバを指したままだとか。 HAProxy と Varnish を使って新データセンターで稼働しているアプリケーションにルーティングしている。こういうレガシーなアレが他にもたくさんあるよ、と。ここはたぶん、薄ら笑いを浮かべるところ。
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— High Scalability の Tumblr Architecture についての記事を読んだ - 刺身☆ブーメランのブログ (via otsune)
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