投稿時間:2022-12-31 09:30:12 RSSフィード2022-12-31 09:00 分まとめ(34件)

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IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 22年の番組別衣装ランキング　2位は『ムチャブリ！ わたしが社長になるなんて』、1位は？	https://www.itmedia.co.jp/business/articles/2212/31/news043.html	itmedia	2022-12-31 08:37:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 7割が「年始に仕事に行きたくない」　モチベーションを上げる方法は？	https://www.itmedia.co.jp/business/articles/2212/30/news052.html	itmedia	2022-12-31 08:27:00
python	Pythonタグが付けられた新着投稿 - Qiita	えっ、Rubyってオワコン言語なの、初心者は何を勉強すればいいの？	https://qiita.com/dosaidon/items/89a065d00770ebc9546e	qiita	2022-12-31 08:42:18
js	JavaScriptタグが付けられた新着投稿 - Qiita	えっ、Rubyってオワコン言語なの、初心者は何を勉強すればいいの？	https://qiita.com/dosaidon/items/89a065d00770ebc9546e	qiita	2022-12-31 08:42:18
Ruby	Rubyタグが付けられた新着投稿 - Qiita	えっ、Rubyってオワコン言語なの、初心者は何を勉強すればいいの？	https://qiita.com/dosaidon/items/89a065d00770ebc9546e	qiita	2022-12-31 08:42:18
技術ブログ	Hatena::Engineering	コーポレートサイトドメイン引越しの裏側	https://developer.hatenastaff.com/entry/2022/12/31/090000	コーポレートサイトドメイン引越しの裏側こんにちは。	2022-12-31 09:00:00
海外TECH	Ars Technica	Busting a myth: Saturn V rocket wasn’t loud enough to melt concrete	https://arstechnica.com/?p=1907031	blast	2022-12-30 23:04:20
海外TECH	DEV Community	Moving AWS RDS from Single AZ To Multi AZ	https://dev.to/aws-builders/moving-aws-rds-from-single-az-to-multiple-az-moi	Moving AWS RDS from Single AZ To Multi AZOverviewAmazon Relational Database Service RDS is a fully managed database service that makes it easy to set up operate and scale relational databases in the cloud Each Amazon RDS instance runs on a DB instance backed by an Amazon Elastic Block Store Amazon EBS volume for storage RDS supports seven different database engine that includes Amazon Aurora with MySQL compatibility Amazon Aurora with PostgreSQL compatibility MySQL MariaDB PostgreSQL Oracle and SQL Server For Production workload it is very important to bake in high availability in database planning to avoid single point of failure in the event of an availability zone failure and also to reduce latency for high write or read applications by using read replicas in the high availability setup To ensure high availability AWS RDS supports two different methods RDS Multi AZ deployments for MySQL MariaDB PostgreSQL Oracle and SQL Server engines For Amazon Aurora engines data can be replicated six ways in three different availability zones In this article our focus will be on RDS Multi AZ deployment Postgres Engine Types of RDS setupSingle AZ Setup In a Single AZ setup one RDS DB instance and one or more EBS storage volumes are deployed in one Availability Zone across data centre Multi AZ setup In a Multi AZ configuration RDS DB instances and EBS storage volumes are deployed across multiple Availability Zones A multi AZ deployment has a Master database in one AZ and a Standby or Secondary database in another AZ Only the Master database serves traffic If the Master fails then the Secondary takes over Multi AZ DB Cluster A Multi AZ DB cluster deployment is a high availability deployment mode of Amazon RDS with two readable standby DB instances A Multi AZ DB cluster has a writer DB instance and two reader DB instances in three separate Availability Zones in the same AWS Region Multi AZ DB clusters provide high availability increased capacity for reading workloads and lower write latency when compared to Multi AZ DB instance deployments Benefits Single AZ database deployment It is cost efficient as you only pay for the database being used without bothering about the standby databaseIt can function optimally and serve applications if there is no fault It allows automatic backup as specified in the schedule It is Ideal for the development environment as it helps save the cost of Development Multi AZ database deployment Amazon RDS maintains a redundant and consistent standby copy of your data using synchronous storage replication Amazon RDS detects and automatically recovers from the most common failure scenarios for Multi AZ deployments so that you can resume database operations as quickly as possible without administrative intervention Amazon RDS automatically performs a failover in the event of loss of availability in the primary Availability Zone loss of network connectivity compute unit failure and storage failure Having separate Availability Zones greatly reduces the likelihood that copies of database are concurrently affected by most types of disturbances and provides a highly available database architecture There is Lower Latency with Multi AZ deployment Multi AZ Cluster database deployment With a Multi AZ DB cluster Amazon RDS replicates data from the writer DB instance to both of the reader DB instances using the DB engine s native replication capabilities Reader DB instances act as automatic failover targets and also serve read traffic to increase application read throughput If an outage occurs on your writer DB instance RDS manages failover to one of the reader DB instances Multi AZ DB clusters have lower write latency when compared to Multi AZ DB instance deployments Sample Multi AZ setupRisks For projects running single AZ production RDS databases and want to consider migrating to Multi AZ Database deployments after reading this article some things to keep in mind and account for before carrying out your migration are listed in the multi AZ sessions below Single AZ DBIt is not highly available When there is a failure in the AZ the database is inaccessible for that period of time Multi AZ DBCost of operation increases because the database has double the resources and infrastructure handling the Database Depending on the number of availability zones the cost for two availability zones is double the cost for a single AZ Though this does not occur all the time there could be a latency issue during migration When Migrating RDS from a single AZ to Multi AZ latency can sometimes occurs because when converting a DB instance from Single AZ to Multi AZ Amazon RDS creates a snapshot of the database volumes and restores these to new volumes in a different Availability Zone Although the newly restored volumes are available almost immediately they don t reach their specified performance until the underlying storage blocks are copied from the snapshot Therefore during the conversion from Single AZ to Multi AZ you can experience elevated latency and performance impacts This impact is a function of volume type workload instance and volume size and can be significant and may impact large write intensive DB instances during the peak hours of operations This latency hardly occurs because for multi az deployment the primary database will still be operating optimally Except there is a case of capacity overload on the primary database before the migration Multi AZ ClusterThere may be an Initial Replica Lag in a multi AZ cluster deployment Replica lag is the difference in time between the latest transaction on the writer DB instance and the latest applied transaction on a reader DB instance You can create a Multi AZ DB cluster only with MySQL version and higher versions and PostgreSQL version You can create Multi AZ DB clusters only in the following AWS Regions US East Ohio US East N Virginia US West Oregon Asia Pacific Singapore Asia Pacific Sydney Asia Pacific Tokyo Europe Ireland Europe Frankfurt Europe Stockholm as at the time of writing this Multi AZ DB clusters only support Provisioned IOPS storage You can t change a single AZ DB instance deployment or Multi AZ DB instance deployment into a Multi AZ DB cluster As an alternative you can restore a snapshot of a single AZ DB instance deployment or a Multi AZ DB instance deployment to a Multi AZ DB cluster You can t restore a Multi AZ DB cluster snapshot to a Multi AZ DB instance deployment or single AZ deployment Multi AZ DB clusters don t support modifications at the DB instance level because all modifications are done at the DB cluster level RecommendationMulti Az deployment of a database is always the best practice to combat faults and failure and have a secure architecture in times of disaster The production environment should always have multi AZ in mind when deploying resources especially databases This would not only make it possible to still operate optimally when a region s data center goes down but It will also enhance database accessibilities by applications as there are enough IOPS to serve the workload Multi AZ should be carried out In the case where cost is a challenge then resources can be right sized to have two copies at a fair price	2022-12-30 23:19:26
海外TECH	DEV Community	Fast Ethernet -> Gigabit Ethernet	https://dev.to/aakhtar3/fast-ethernet-gigabit-ethernet-8cc	Fast Ethernet gt Gigabit EthernetI wanted to hard wire all of my devices on my Local Area Network using Ethernet I noticed one of my connections was much slower than expected and wanted to fix it This write up goes over the steps that a network administrator should use to troubleshoot network issues TermsDefinitionFast Ethernet Megabits per secondGigabit Ethernet Megabits per secondHalf DuplexTransmit data in one direction at a timeFull DuplexTransmit data in two directions at the same timeISPInternet Service ProviderVPNVirtual Private NetworkWANWide Area NetworkLANLocal Area Network Identify the ProblemTP Link Port Gigabit Switch identifies port as Mbps Full duplexfast com test shows Mbps Develop a TheoryCate cable is damaged or misconfigured Test the TheoryUse another wire and connection Plan of ActionFix Cate Ethernet with a Network Tool KitUpdate Male Cate Ethernet JackUpdate Female Ethernet Keystone Jack Implement the Solution Update Cate Ethernet JackUse crimping tool Cut Male Cate Ethernet jackExpose WiresInspect wiring arrangementUse wire stripping knifeCut coveringRemove coveringSeparate wire pairingInsert wires into RJTighten wires with crimping tool RJ slot Update Ethernet Keystone JackUse Punchdown toolPush down into Female Ethernet Keystone Jack and trim exposed wiresUse B layoutUse B layoutInstall on wall plate Verify System FunctionalityTP Link Port Gigabit Switch identifies port as Mbps Full duplexfast com test shows MbpsIn theory I should get higher speed if I purchase more bandwidth from my ISP Document the IssueThis write up is the documentation and is intended for sharing on the public internet	2022-12-30 23:10:18
金融	金融総合：経済レポート一覧	FX Daily（12月29日）～133円近辺まで軟化	http://www3.keizaireport.com/report.php/RID/522199/?rss	fxdaily	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	金融機関の気候変動に関する開示状況調査（2022年3月期）：Short Review	http://www3.keizaireport.com/report.php/RID/522200/?rss	shortreview	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	決済動向（2022年11月）	http://www3.keizaireport.com/report.php/RID/522202/?rss	日本銀行	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	こよみ Vol.167 ～2024年開始見込みの新しいNISA（少額投資非課税制度）とは？	http://www3.keizaireport.com/report.php/RID/522203/?rss	少額投資非課税制度	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	スマサポ（東証グロース）～不動産管理会社と賃貸入居者とのコミュニケーション領域にソリューションを提供。入居者アプリ「totono」を核としたサービスの拡充で成長を図る：アナリストレポート	http://www3.keizaireport.com/report.php/RID/522207/?rss	totono	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	GENOVA（東証グロース）～医療機関向けに医療情報メディア運営や業務効率化ソリューション提供を行う。23年3月期も大幅増収増益が続く見込み：アナリストレポート	http://www3.keizaireport.com/report.php/RID/522208/?rss	医療機関	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	ＢＴＭ（東証グロース）～独自データベースを基に地方人財を活用するDX推進企業。地方と首都圏の機会格差をなくしたいとの想いが事業の出発点：アナリストレポート	http://www3.keizaireport.com/report.php/RID/522209/?rss	首都圏	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	ELEMENTS（東証グロース）～個人認証と個人最適化の2つのソリューションによる事業を展開。モノ・サービスを個人に最適化するAIクラウド基盤を提供：アナリストレポート	http://www3.keizaireport.com/report.php/RID/522210/?rss	elements	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	サンクゼール（東証グロース）～「サンクゼール」、「久世福商店」ブランドを展開する「食のSPA」。23年3月期は国内FC店舗、ホールセール、海外展開が成長を牽引する見込み：アナリストレポート	http://www3.keizaireport.com/report.php/RID/522211/?rss	海外展開	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	国民年金第３号被保険者制度についての一考察	http://www3.keizaireport.com/report.php/RID/522234/?rss	国民年金	2022-12-31 00:00:00
金融	金融総合：経済レポート一覧	中小企業金融をめぐる現状及びポストコロナに向けた今後の在り方	http://www3.keizaireport.com/report.php/RID/522240/?rss	中小企業	2022-12-31 00:00:00
海外ニュース	Japan Times latest articles	North Korea launches at least two ballistic missiles on final day of year	https://www.japantimes.co.jp/news/2022/12/31/asia-pacific/north-korea-missile-december-31/	North Korea launches at least two ballistic missiles on final day of yearThe nuclear armed North has launched more than missiles this year shattering its previous record in its quest to bolster its arsenal	2022-12-31 08:40:12
ニュース	BBC News - Home	Covid in China: WHO calls on Beijing to strengthen its response	https://www.bbc.co.uk/news/world-asia-64131713?at_medium=RSS&at_campaign=KARANGA	covid	2022-12-30 23:48:46
ニュース	BBC News - Home	Cristiano Ronaldo joins Saudi Arabian side Al Nassr	https://www.bbc.co.uk/sport/football/63805297?at_medium=RSS&at_campaign=KARANGA	nassr	2022-12-30 23:34:49
ニュース	BBC News - Home	Knighthoods for MPs who caused Boris Johnson headaches	https://www.bbc.co.uk/news/uk-politics-64126704?at_medium=RSS&at_campaign=KARANGA	honours	2022-12-30 23:16:33
ニュース	BBC News - Home	New Year Honours 2023: Pat Jennings, Dara McAnulty and John Bennett on NI list	https://www.bbc.co.uk/news/uk-northern-ireland-64125942?at_medium=RSS&at_campaign=KARANGA	honours	2022-12-30 23:36:11
ビジネス	ダイヤモンド・オンライン - 新着記事	邦銀株が復活　日銀「カンフル剤」効果 - WSJ発	https://diamond.jp/articles/-/315538	邦銀	2022-12-31 08:07:00
北海道	北海道新聞	高梨、２位で予選通過　スキーＷ杯ジャンプ女子	https://www.hokkaido-np.co.jp/article/782533/	予選通過	2022-12-31 08:38:23
北海道	北海道新聞	山形・鶴岡で土砂崩れ、２人不明　約１０棟が巻き込まれたか	https://www.hokkaido-np.co.jp/article/782528/	土砂崩れ	2022-12-31 08:24:32
北海道	北海道新聞	キーウ、対ロ空襲警報６９３時間　２月以降、市民ら長期の避難	https://www.hokkaido-np.co.jp/article/782530/	空襲警報	2022-12-31 08:24:32
北海道	北海道新聞	ＮＹ原油、８０ドル台　２２年７％高、先行き不透明	https://www.hokkaido-np.co.jp/article/782536/	月日	2022-12-31 08:24:00
北海道	北海道新聞	ロナルド、新天地はサウジ　ポルトガル代表ＦＷ	https://www.hokkaido-np.co.jp/article/782535/	新天地	2022-12-31 08:14:00
北海道	北海道新聞	ＮＹ株、１４年ぶり年間下落率　２２年８・８％、金融引き締めで	https://www.hokkaido-np.co.jp/article/782531/	金融引き締め	2022-12-31 08:14:19
北海道	北海道新聞	ロシア飛行士らキャビアで新年　ＩＳＳ、保存食で少量用意	https://www.hokkaido-np.co.jp/article/782527/	飛行士	2022-12-31 08:04:08
ビジネス	東洋経済オンライン	バンライフ女子大生､自由な車上生活を選んだ訳 キャンピングカー生活を送りながら大学へ通う | トレンド | 東洋経済オンライン	https://toyokeizai.net/articles/-/642625?utm_source=rss&utm_medium=http&utm_campaign=link_back	女子大生	2022-12-31 08:40:00