- 不変な、状態を持たない、 廃棄可能な
- 「状態管理が面倒なら、状態を管理しなければイイ」
- Chad Fowler
- 「サーバーを捨てろ」
- blue green deployment
- 今まで主流のデプロイ＝更新があったプログラムだけ配る
- よく事故る
- gemの依存関係が影響してリスタートしたら動かない
Fuminori Sakamoto goldeneggg
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| object Aho { | |
| def main(args: Array[String]) { | |
| aaa(1, "2", true) | |
| ddd(1, "2", true) | |
| } | |
| // aaa - ccc, そのまま可変長引数を渡して実行 | |
| def aaa(params: Any*) { | |
| println("AAA params[%s] params class[%s]".format(params, params.getClass)) |
goldeneggg
/ immutableinfraconf.md
Last active
August 29, 2015 13:57
Immutable Infrastructure Conference #1 箇条メモ
goldeneggg
/ docker_md.md
Last active
November 26, 2017 08:08
Dockerについての調査まとめ、基本機能＋主な特徴＋Vagrantの連携 あたり
lxc- LXC - Wikipedia
- OSレベル の仮想化ソフトウェア
- 完全仮想化（ハードウェアをエミュレート、オーバーヘッド大） - KVM etc
- 準仮想化（ゲストOSがホストOSのAPIを使用、オーバーヘッド中） - Xen, Hyper-V etc。Virtualboxもこちらか
- 仮想機械ではなく、個別のプロセスとネットワークスペースを作り出す仮想環境
goldeneggg
/ package_private.scala
Created
February 24, 2014 13:13
private var と private[this] var の違い
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| // private なら、同一クラスの他オブジェクトからアクセス可能 | |
| scala> class Hoge (private var aho: Int) { def debug(hoge: Hoge) { println(hoge.aho) } } | |
| defined class Hoge | |
| // private[this] なら、同一クラスの他オブジェクトからアクセス不可 | |
| scala> class Huga (private[this] var aho: Int) { def debug(huga: Huga) { println(huga.aho) } } | |
| <console>:7: error: value aho is not a member of Huga | |
| class Huga (private[this] var aho: Int) { def debug(huga: Huga) { println(huga.aho) } } |
goldeneggg
/ sshconfig
Last active
January 3, 2016 06:19
これぐらいトンネル掘っておけばまあ困らんだろ、的sshconfig
ついでにsocks proxy立ててinternalなページにもアクセス出来るようにしといた
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| Host nemui | |
| Hostname setsuzoku.server | |
| User jpshadowapps | |
| LocalForward 16667 irc.na.server:6667 # ircサーバのsshトンネル | |
| LocalForward 13389 win.na.server:3389 # windowsサーバのsshトンネル。RDCで localhost:13389 とかして接続 | |
| LocalForward 15900 mac.na.machine:5900 # mac 画面共有のsshトンネル | |
| LocalForward 10022 localhost:22 | |
| ProxyCommand ssh [email protected] nc -w 1 %h %p # 多段ssh時の経由サーバ | |
| DynamicForward localhost:10080 # socks proxy | |
| IdentityFile ~/.ssh/nemui_rsa |
goldeneggg
/ HogeMain.scala
Created
December 14, 2013 04:15
scala コップ本の自作distinctよりもちょっと速い自作distinct
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| package ssbt | |
| object HogeMain { | |
| def main(args: Array[String]) { | |
| val list = getRandomList(50, 500) | |
| println("----- start distinct1") | |
| repeat(10, repeatDistinct(distinct1[Int], list)) |
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| package ssbt | |
| object Euler32 { | |
| def main(args: Array[String]) { | |
| val permutations = List("1", "2", "3", "4", "5", "6", "7", "8", "9").permutations | |
| val pandigitalProducts = permutations.map(getPandigitalProductList(1, _)).toList.filter(_.size > 0) | |
| println("Answer %s".format(pandigitalProducts.flatten.distinct.sum)) | |
| } |
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| package ssbt | |
| object Euler24 { | |
| def main(args: Array[String]) { | |
| val result = List(0, 1, 2, 3, 4, 5, 6, 7, 8, 9).permutations.zipWithIndex.filter(_._2 == 999999).next._1.mkString | |
| println("Answer %s".format(result)) | |
| } |
goldeneggg
/ gist:7317600
Created
November 5, 2013 11:19
二重引用符付きCSVを処理するとして、str.split(",")した後のクォーテーション除去を map(_.replace("¥"")) と map(_.init.tail) で速度比較したら後者の方が速かった (20回ずつ動かして比較) #scala
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| object Hoge { | |
| def main(args: Array[String]) { | |
| for (i <- (1 to 20)) mainRecur(args(0).toInt) | |
| } | |
| private def mainRecur(ver: Int) { | |
| var start = System.nanoTime | |
| val s = "\"1\",\"22\",\"333\",\"4444\",\"55555\"" |