Kazuya NUMATA kaznum

## amazon_qldb.md

      
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                kaznum
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              March 24, 2021 23:29
            
              
                Amazon QLDB
              
          
    Amazon QLDB

Amazon Quantum Ledger Database (QLDB)
透過的でイミュータブル、かつ暗号的に検証可能なトランザクションログを提供するフルマネージド型台帳データベース。ログは信頼された中央機関が所有。
https://aws.amazon.com/jp/qldb/
https://ap-northeast-1.console.aws.amazon.com/qldb/home?region=ap-northeast-1#getting-started
特徴


アプリケーションデータの各変更を追跡し、完全で順番に並んだ変更履歴を長期間維持するジャーナルを使用


## init.el
;; インターネット上には色々な記述があるが、結局のところ markdown コマンドと同様に、
;; 標準入力からMarkdown形式の文書が入力され、それが成型されたのち標準出力に出力されればよい。
;;
;; M-m m c p でブラウザが起動。
;; 事前に `brew install grip`しておく
;; --gfm をつけると良いという記述があったが、今のgrip(4.3.2)にはこのオプションは存在しなかった。
(setq markdown-command "grip --export - /dev/stdout")

## session_id_in_header.rb
# This module offers the way to get session_id from HTTP_X_SID
# in the request headers for Rack application.
#
# This is only work memcache and dalli
# (Rack::Session::Cookie implements 'extract_session_id' by itself.)
# Put this file in config/initializers when used with Rails.
#
# I don't know why this module exists because the default way is
# using cookies, but cookie is even put in HTTP Request and response
# headers too.

## aitter.js
(function(){
	var total = {};
	var year = '2012';
	var all = false;
	function init(num) {
		if(typeof num !== 'number') {
			num = 0;
			$('<div/>').css({
				position: 'fixed',
				left: 0,

## gist:3810258
/*
 * sanitize HTML with jQuery based on whitelist
 * example:
 *   sanitizer.sanitize('<a href="foo" class="bar">aaa</a><script>alert("...")</script>', {'a': ['href'], 'strong': []})
 *   returns '<a href="foo">aaa</a>'
 */
var sanitizer = {};

(function($) {
  function trimAttributes(node, allowedAttrs) {

## arel_sql92_like_escape.rb
# SQL92 style "LIKE" escaped expression support
#
# load via initializer in Rails
#
# Arel supports the following expression
#    where(Item.arel_table[:name].matches("%#{str}%")
# and str have to be escaped.
# The following code specify '!' as an ESCAPE character.
# The target characters to escape are /[%_!]/
# When these characters are escaped with proceeding "!", the following code escapes these character correctly.

## EmolettHelper.rb
# -*- coding: utf-8 -*-
module EmolettHelper
  def emolettise(str)
    str.gsub(/(\(|（)(笑|爆|嬉|喜|楽|驚|泣|涙|悲|怒|厳|辛|苦|閃|汗|忙|急|輝)(\)|）)/) { |s|
      "<span class='emo'>#{s}</span>"
    }.html_safe
  end
end

## gist:2435951
# Install with:
# bash < <(curl -L https://raw.github.com/gist/2435951)
#
# Reference: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug

echo "Installing ruby-debug with ruby-1.9.3-p194 ..."

curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem

## remove_file_completely_from_git.sh
#!/bin/bash

# force remove file from git repository.
git filter-branch --index-filter 'git update-index --remove filepath_to_remove' HEAD
git push --force --verbose --dry-run
git push --force

## looking_for_and_killing_process_to_use_tcp_port.sh
# to look for the processes to use tcp 443
fuser -n tcp 443
# to kill all processes to use tcp 443
fuser -kn tcp 443
	;; インターネット上には色々な記述があるが、結局のところ markdown コマンドと同様に、
	;; 標準入力からMarkdown形式の文書が入力され、それが成型されたのち標準出力に出力されればよい。
	;;
	;; M-m m c p でブラウザが起動。
	;; 事前に `brew install grip`しておく
	;; --gfm をつけると良いという記述があったが、今のgrip(4.3.2)にはこのオプションは存在しなかった。
	(setq markdown-command "grip --export - /dev/stdout")
	# This module offers the way to get session_id from HTTP_X_SID
	# in the request headers for Rack application.
	#
	# This is only work memcache and dalli
	# (Rack::Session::Cookie implements 'extract_session_id' by itself.)
	# Put this file in config/initializers when used with Rails.
	#
	# I don't know why this module exists because the default way is
	# using cookies, but cookie is even put in HTTP Request and response
	# headers too.
	(function(){
	var total = {};
	var year = '2012';
	var all = false;
	function init(num) {
	if(typeof num !== 'number') {
	num = 0;
	$('<div/>').css({
	position: 'fixed',
	left: 0,
	/*
	* sanitize HTML with jQuery based on whitelist
	* example:
	* sanitizer.sanitize('<a href="foo" class="bar">aaa</a><script>alert("...")</script>', {'a': ['href'], 'strong': []})
	* returns '<a href="foo">aaa</a>'
	*/
	var sanitizer = {};

	(function($) {
	function trimAttributes(node, allowedAttrs) {
	# SQL92 style "LIKE" escaped expression support
	#
	# load via initializer in Rails
	#
	# Arel supports the following expression
	# where(Item.arel_table[:name].matches("%#{str}%")
	# and str have to be escaped.
	# The following code specify '!' as an ESCAPE character.
	# The target characters to escape are /[%_!]/
	# When these characters are escaped with proceeding "!", the following code escapes these character correctly.
	# -- coding: utf-8 --
	module EmolettHelper
	def emolettise(str)
	str.gsub(/(\(\|（)(笑\|爆\|嬉\|喜\|楽\|驚\|泣\|涙\|悲\|怒\|厳\|辛\|苦\|閃\|汗\|忙\|急\|輝)(\)\|）)/) { \|s\|
	"<span class='emo'>#{s}</span>"
	}.html_safe
	end
	end
	# Install with:
	# bash < <(curl -L https://raw.github.com/gist/2435951)
	#
	# Reference: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug

	echo "Installing ruby-debug with ruby-1.9.3-p194 ..."

	curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
	curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem
	#!/bin/bash

	# force remove file from git repository.
	git filter-branch --index-filter 'git update-index --remove filepath_to_remove' HEAD
	git push --force --verbose --dry-run
	git push --force
	# to look for the processes to use tcp 443
	fuser -n tcp 443
	# to kill all processes to use tcp 443
	fuser -kn tcp 443