| IT |
ITmedia 総合記事一覧 |
[ITmedia PC USER] ROCCAT、高耐久キースイッチを採用したメカニカルゲーミングキーボード「Vulcan II」 |
https://www.itmedia.co.jp/pcuser/articles/2308/16/news121.html
|
itmediapcuserroccat |
2023-08-16 14:21:00 |
| IT |
ITmedia 総合記事一覧 |
[ITmedia Mobile] X（旧Twitter）iOSアプリのアイコン変更 背景に「亀裂」が入った理由は？ |
https://www.itmedia.co.jp/mobile/articles/2308/16/news120.html
|
itmediamobilex |
2023-08-16 14:10:00 |
| python |
Pythonタグが付けられた新着投稿 - Qiita |
【実践XAI①】PDPによるモデルの説明 |
https://qiita.com/Matsuda_Takumi/items/a00f9e4f92a253706e16
|
機械学習 |
2023-08-16 14:02:02 |
| js |
JavaScriptタグが付けられた新着投稿 - Qiita |
Railsでjqueryのajaxを使ってCSVインポート・エクスポートを実装 |
https://qiita.com/pppara/items/7f903f13217527525395
|
jquery |
2023-08-16 14:16:05 |
| Ruby |
Rubyタグが付けられた新着投稿 - Qiita |
Railsでjqueryのajaxを使ってCSVインポート・エクスポートを実装 |
https://qiita.com/pppara/items/7f903f13217527525395
|
jquery |
2023-08-16 14:16:05 |
| Linux |
Ubuntuタグが付けられた新着投稿 - Qiita |
私的サーバー構築日誌：Ubuntu 22.04 LTS on ZFS in デスクトップパソコン(UEFI,GPT) |
https://qiita.com/katz_engineer/items/667aefcab488cc4a1caf
|
intelnuc |
2023-08-16 14:19:41 |
| AWS |
AWSタグが付けられた新着投稿 - Qiita |
AWS ECS の blue/greenデプロイ実行でエラー |
https://qiita.com/YumaInaura/items/bbff6a25aead82bfc912
|
dwithanapplicationthat |
2023-08-16 14:18:19 |
| 海外TECH |
DEV Community |
Transactions And Transaction Propagation |
https://dev.to/sohailshah/transactions-and-transaction-propagation-2noh
|
Transactions And Transaction PropagationLet s begin this post by understanding what is a transaction What is a Transaction To define in simple terms a transaction is an atomic unit of work In the context of software applications it represents a single coherent unit of work that consists of multiple operations Transactions primarily belong to the context of databases A transaction in a database represents a unit of work that consists of multiple database operations such as insert select update or delete While transactions are managed by the database itself software applications that connect with the database play a vital role in initiating and controlling the transactions Transactions are a fundamental aspect of relational databases and even some non relational databases also provide transactional ability Why the need for transactions The purpose of using transactions is to ensure data integrity and consistency When multiple operations are grouped into a transaction they are either all completed successfully or none of them are applied which helps maintain the accuracy and reliability of the data E Commerce banking and finance reservation systems and supply chain management are a few examples of domains where their software applications need to have consistent and accurate data to perform operations without discrepancies and guarantee reliable customer experience Let s take an example of buying a product from an e commerce site When the buy product button is clicked the order is confirmed To confirm the order multiple operations can take place like checking product availability reserving the product updating the inventory creating the order payment and order confirmation This is just an example in a real case much more complicated operations take place The buy product method is put in a transaction context to make sure all the operations occur or neither of them The annotation is used in spring applications to define and manage transactions for methods When a method is marked with Transactional annotation by default Changes are rollbacked if any RuntimeException is thrown by the methodChanges are not rollbacked if any Checked Exception is thrown by the methodThis default behavior for rollback can be changed by passing particular RuntimeExceptions and Checked Exceptions for rollbackFor and noRollbackFor parameters for the Transactional annotation Transactional rollbackFor DuplicateUserException class noRollbackFor IllegalArgumentException class Transaction PropagationIn spring applications to execute a method in a transaction context the Transactional annotation on top of a method When a method with a transaction calls multiple other methods transactions are propagated from one method to another We might want to manage the transaction propagation behavior differently to different methods depending on their functionality From the above example we know that single action such as buying a product involves carrying out several individual tasks The buy method will include all the individual method calls to make up a single cohesive unit Propagation REQUIREDBy default propagation is set to required When a method is annotated with Transactional propagation Propagation REQUIRED the method will always require a transaction context to execute Method marked with Propagation REQUIRED when called from another method If there is no transaction a new transaction is createdIf a transaction is already present the method is executed in the same transaction contextIn our example let s say the check product availability is marked with required propagation so it will execute in the same transaction context as buy product method Propagation REQUIRES NEWWhen a method is marked with Transactional propagation Propagation REQUIRES NEW a new transaction context is created every time the method is executed even if it is called from a method with a transaction already present There can be a requirement such that if one particular operation like sending mail is part of the buy product method fails for some reason you don t want the entire transaction to fail Because sending mail should not affect the customer buying the product Propagation MANDATORYAs the name suggests when a method is marked with Transactional propagation Propagation MANDATORY it always requires a transaction context to execute Using this propagation doesn t create a transaction of its own but makes sure that there is a transaction context when calling the method Methods marked with mandatory when called from a method that doesn t have any transaction will fail with an exception from the transaction manager Propagation NEVERWhen a method marked is marked with Transactional propagation Propagation NEVER it means never it requires a transaction context for execution If a method is marked with Propagation NEVER and called from a method with a transactions context it will with an exception It behaves the opposite of Propagation MANDATORY Propagation SUPPORTSWhen a method is marked with Transactional propagation Propagation NEVER the method can be called from a transaction context or without a transaction context As the name implies it supports being executed in a transaction context but doesn t create a new transaction on its own rather executes within the called methods transaction context At the same time the method can also be called from a method with no transaction context just like a normal method Propagation SUPPORTS is like a middle ground for Propagation MANDATORY and Propagation NEVER Propagation NOT SUPPORTEDWhen a method is marked with Transactional propagation Propagation NOT SUPPORTED the method executes without a transaction The method can be called from a method either with a transactional or without a transaction But even when called from a method with a transaction context the method marked with Propagation NOT SUPPORTED will always execute with any transaction context Let s say the buy product consists of a method that has a single select query that reads data from the database It s logical that this method doesn t require any transaction for execution as it is not making any changes to the database If you liked this post leave a reaction we ll cover transaction isolation in another post |
2023-08-16 05:14:06 |
| 金融 |
日本銀行：RSS |
令和5年台風第7号に伴う災害等に対する金融上の措置について（兵庫県） |
http://www.boj.or.jp/about/bcp/fso/fso230816b.pdf
|
Detail Nothing |
2023-08-16 15:00:00 |
| 金融 |
日本銀行：RSS |
令和5年台風第7号に伴う災害等に対する金融上の措置について（鳥取県） |
http://www.boj.or.jp/about/bcp/fso/fso230816a.pdf
|
Detail Nothing |
2023-08-16 14:30:00 |
| ニュース |
BBC News - Home |
Watch: Maui valley flattened by 'fireball' |
https://www.bbc.co.uk/news/world-us-canada-66517506?at_medium=RSS&at_campaign=KARANGA
|
helena |
2023-08-16 05:55:49 |
| ニュース |
BBC News - Home |
Maia Bouchier wants to 'pave way' for future LGBTQ+ cricketers |
https://www.bbc.co.uk/sport/cricket/66464975?at_medium=RSS&at_campaign=KARANGA
|
selves |
2023-08-16 05:07:11 |
| IT |
週刊アスキー |
PC『ガンダムトライヴ』に「EXCEED★5 戦艦」が初登場！「ホワイトベース」を入手できるシリアルコードも公開 |
https://weekly.ascii.jp/elem/000/004/150/4150029/
|
exceed |
2023-08-16 14:40:00 |
| IT |
週刊アスキー |
YouTube Music オススメの曲を提案する新機能 |
https://weekly.ascii.jp/elem/000/004/150/4150011/
|
music |
2023-08-16 14:10:00 |
| IT |
週刊アスキー |
訪日外国人向けSIMカード「JP SMART SIM」、成田空港にて日本到着後すぐに利用できる空港受け取りサービスを開始 |
https://weekly.ascii.jp/elem/000/004/149/4149984/
|
jpsmartsim |
2023-08-16 14:40:00 |
| ニュース |
THE BRIDGE |
介護施設の人手不足緩和に役立つ、高齢者ケアのためのメタバース「CAREVERSE」／明治アクセラレーター2022 |
https://thebridge.jp/2023/08/careverse-meiji-accelerator-2023-01booster
|
介護施設の人手不足緩和に役立つ、高齢者ケアのためのメタバース「CAREVERSE」明治アクセラレーター本稿は明治アクセラレーターのデモデイ最終成果発表のレポートの一部。 |
2023-08-16 05:17:37 |
| ニュース |
THE BRIDGE |
アプリからカスタマイズした料理をオーダーできる仕組み「FOODCODE」／明治アクセラレーター2022 |
https://thebridge.jp/2023/08/foodcode-meiji-accelerator-2023-01booster
|
アプリからカスタマイズした料理をオーダーできる仕組み「FOODCODE」明治アクセラレーター本稿は明治アクセラレーターのデモデイ最終成果発表のレポートの一部。 |
2023-08-16 05:07:57 |
| ニュース |
THE BRIDGE |
「食品開発経験ゼロ」からCBDドリンクを作ったLeaflowーー明治とスタートアップの共同作業はどう進んだ |
https://thebridge.jp/2023/08/a-story-of-cbd-drink-leaflow-how-did-startup-make-cbd-drink-with-traditional-company-meiji-01booster
|
「食品開発経験ゼロ」からCBDドリンクを作ったLeaflowー明治とスタートアップの共同作業はどう進んだ大手企業としては手を出しにくい領域だったー。 |
2023-08-16 05:06:06 |
| ニュース |
THE BRIDGE |
明治がスタートアップ6社と4カ月の協業検証、社員らも参加 |
https://thebridge.jp/2023/08/meiji-accelerator-2023-demo-day
|
明治がスタートアップ社とカ月の協業検証、社員らも参加明治とBoosterは月日、都内で明治とスタートアップの協業を検証するプログラム「明治アクセラレーター」の成果報告会デモデイ開催を公表した。 |
2023-08-16 05:05:53 |
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