kelan

#!/usr/bin/env ruby -wKU
#
# by Kelan Champagne
# http://yeahrightkeller.com
#
# A script to generate a personal podcast feed, hosted on Dropbox
#
# Inspired by http://hints.macworld.com/article.php?story=20100421153627718
#
# Simply put this, and some .mp3 or .m4a files in a sub-dir under your Dropbox

nicferrier

#!/bin/sh

REPOSRC=$1
LOCALREPO=$2

# We do it this way so that we can abstract if from just git later on
LOCALREPO_VC_DIR=$LOCALREPO/.git

if [ ! -d $LOCALREPO_VC_DIR ]
then

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

kenjiskywalker

http://nginx.org/en/docs/http/configuring_https_servers.html
http://nginx.org/ja/docs/http/configuring_https_servers.html

default_server

default_serverは対象のポートに対して有効だから
下記のようにポート毎にデフォルトサーバを指定できる。

server {

emil2k

/*
 * Copyright (c) 2017 Emil Davtyan
 * 
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:

denji

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

ktx2207

Git ファイルの履歴を完全に削除する

秘密鍵など誤ってコミットしてしまった場合に履歴を完全に削除する手順
参考:6.4 Git のさまざまなツール - 歴史の書き換え

動作確認用にブランチを作成して試す

$ git checkout -b clean-key-file

動作確認用にブランチでgit filter-branchを実行

haggen

math.randomseed(os.time())

local charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"

function string.random(length)
  if length > 0 then
    return string.random(length - 1) .. charset:sub(math.random(1, #charset), 1)
  else
    return ""
  end

udzura

やわらか Consul

こわくないConsul

Setup

事前に、ワークショップ用のサンプルプロジェクトをチェックアウトし、VMの作成だけしておきましょう。 --no-provision でお願いします！

kapilt

from botocore.credentials import RefreshableCredentials
from botocore.session import get_session

from boto3 import Session


def assumed_session(role_arn, session_name, session=None):
    """STS Role assume a boto3.Session                                                                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                                                                                                       
    With automatic credential renewal.