投稿時間:2022-04-16 06:13:17 RSSフィード2022-04-16 06:00 分まとめ(18件)

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IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 「現金1000万円があったらお金をかけたいこと」ランキング　趣味や住宅を抑えた1位は？	https://www.itmedia.co.jp/business/articles/2204/16/news032.html	itmedia	2022-04-16 05:15:00
海外TECH	Ars Technica	Camera manufacturer turns Ars comment section into makeshift AMA	https://arstechnica.com/?p=1848475	comments	2022-04-15 20:14:29
海外TECH	DEV Community	How to create your first app with anchor ?	https://dev.to/chroniques_decentralisees/how-to-create-your-first-app-with-anchor--1b8h	How to create your first app with anchor Many people are adopting web these days but there is a problem to onboard even more people Most of the tutorials are done in English which can discourage most French speakers who have to overcome two barriers the one of learning programming and the one of the language Of course English is a prerequisite for anyone wishing to get into IT but starting in their mother tongue makes learning easier This tutorial is therefore aimed at the French speaking community It allows them to learn how to create their first application on the solana blockchain using the anchor framework If you like my work do not hesitate to subscribe to my youtube channel	2022-04-15 20:11:33
海外TECH	DEV Community	Hibernate - LazyInitializationException	https://dev.to/yigi/hibernate-lazyinitializationexception-m64	Hibernate LazyInitializationException Transactional annotation is used when you want the certain method class to be executed in a transaction Let s assume buyer wants to transfer to seller What happens is gt We decrease buyer s account by gt We add to seller s account Then the exception is thrown after succeeding and before executing Now we would have some kind of inconsistency because Buyer lost while seller got nothing Transactions means all or nothing If there is an exception thrown somewhere in the method changes are not persisted in the database Something called rollback happens If you don t specify Transactional each DB call will be in a different transaction Tell us the relation between LAZY and TransactionalFrom the previous post JPA specification says that in case you are trying to fetch a relationship which is lazily loaded you must have declared transaction Otherwise LazyInitializationException will be the one of the most common exceptions you will face when working with Hibernate How to NOT fix the LazyInitializationException People recommend updating the association s FetchType to EAGER Of course this resolves the LazyInitializationException but it also adds performance issues that will emerge in practice Hibernate will always fetch the association if the FetchType is set to EAGER even if you don t utilize it in your scenario This certainly adds overhead to your program slowing it down andAnother suggestion you should avoid is to set the hibernate enable lazy load no trans configuration parameter in the application properties file to true This parameter tells Hibernate to open a temporary Session when no active Session is available to initialize the lazily fetched association This increases the number of used database connections database transactions and the overall load on your database How to fix the LazyInitializationException Executing a Criteria Query with one or more LEFT JOIN FETCH clauses is the simplest way to load an entity with all required relationships This enables Hibernate to collect all connected entities referenced in the LEFT JOIN FETCH clause in addition to the entity referenced in the projection See the related postorUse a DTO projection instead of entities DTOs don t support lazy loading and you need to fetch all required information within your service layer	2022-04-15 20:10:15
海外TECH	DEV Community	Hibernate - N+1 Problem	https://dev.to/yigi/hibernate-n1-problem-580	Hibernate N ProblemLet s imagine we have two entities with a one to many relationship Product and ProductEntry For some use cases we may want to load only Product related attributes but for other cases we may need to load product together with their entries EAGER and LAZY are the two fetch types provided by Hibernate LAZY retrieves only the desired entity and nested attributes when they are accessed whereas EAGER fetches everything Setting the EAGER fetch type for a connection is a common option for novices but it degrades efficiency because it requires the loading of all relationships even if they aren t needed Additionally employing the EAGER fetch type forces you to utilize it all of the time On a method level it can t be overridden The next scenario is when you notice that while EAGER fetch type works OK it does not fulfill performance needs so fetch type is reverted to LAZY After that you may loop through a list of parent entities for example Products and retrieve their hierarchical relationships From the standpoint of the code it appears to be correct however this is where the N select problem emerges The following queries are sent by Hibernate To retrieve a list of Products run the first SQL query Additional queries to retrieve Product Entries in a particular product query per product As a result N select queries are generated where N is the number of Products Consider N or to see how the performance will be affected While a single query can do your job queries also can do Select your side Here comes the solutionA custom query with JOIN FETCH is one of the Hibernate solutions for the N select problem instead of querying nested product records for each product with a separate query we may build a single query to select products and join relevant entries Hibernate is told to populate nested entities when JOIN FETCH is used Consider entities and a Spring Repository with a custom method that is annotated with a custom JOIN FETCH query Repositorypublic interface ProductRepository extends JpaRepository lt Product Long gt Query SELECT DISTINCT s FROM Products p LEFT JOIN FETCH p entries pe List lt Product gt findAllWithEntries The resulting list will have nested product entries populated without executing additional queries	2022-04-15 20:09:38
Apple	AppleInsider - Frontpage News	New 'Chocolate' ad spot highlights the Apple Card's easy signup	https://appleinsider.com/articles/22/04/15/new-chocolate-ad-spot-highlights-the-apple-cards-easy-signup?utm_medium=rss	New x Chocolate x ad spot highlights the Apple Card x s easy signupApple has debuted a new chocolate themed ad spot promoting the easy signup and card less design of the Apple Card ChocolateIn the ad which is succinctly titled Chocolate a man begins to eat a candy bar before realizing that he doesn t have his wallet on him After frantically checking his pockets he eventually pulls out his iPhone while in line applies for an Apple Card and is able to use the payment method before checkout Read more	2022-04-15 20:39:01
Apple	AppleInsider - Frontpage News	Chinese officials lock down area near Foxconn's main iPhone factory	https://appleinsider.com/articles/22/04/15/chinese-officials-lock-down-area-near-foxconns-main-iphone-factory?utm_medium=rss	Chinese officials lock down area near Foxconn x s main iPhone factoryOfficials in Zhengzhou China have implemented lockdowns near Foxconn s primary iPhone manufacturing facilities a move that may affect supply of Apple devices Foxconn plantAccording to Bloomberg some areas in the Zhengzhou Airport Economy Zone have been placed under strict lockdowns measures with residents being unable to leave their homes for most purposes The economy zone is where Foxconn s primary iPhone assembly plant is located Read more	2022-04-15 20:30:19
海外TECH	Engadget	DuckDuckGo removes search results for major pirate websites	https://www.engadget.com/duckduckgo-removes-pirate-sites-204936242.html?src=rss	DuckDuckGo removes search results for major pirate websitesDuckDuckGo s crackdown on dodgy content now extends to digital bootleggers TorrentFreak has discovered that the search engine no longer lists results for some major pirate websites including The Pirate Bay x and Fmovies ーlook for anything from their domains and you ll come up empty handed Streaming and stream ripping sites like Flixtor and conv also produce no results while other pirate outlets such as RarBG may only turn up one result instead of the hundreds of thousands you see elsewhere The site for the video download tool YouTube dl also produces no results despite recent defenses of its legality While the RIAA has portrayed YouTube dl as a piracy tool the Electronic Frontier Foundation GitHub and others found that it doesn t rip DRM protected material We ve asked DuckDuckGo for comment As TorrentFreak says though liability for copyright violations might be an issue The company removed pirate quot bangs quot shortcuts for pirate sites as far back as and competitors like Google and Microsoft are already downranking piracy related results A move like this could protect DuckDuckGo against costly copyright battles	2022-04-15 20:49:36
海外科学	NYT > Science	A New Covid Breath Test Holds Promise, but Wide Use May Still Be Far Off	https://www.nytimes.com/2022/04/15/health/covid-breathalyzer-test.html	A New Covid Breath Test Holds Promise but Wide Use May Still Be Far OffThe F D A authorized a breath based test made by a small Texas company which said it hoped that mobile sites could use the device	2022-04-15 20:44:47
海外科学	NYT > Science	Biden Plans to Open More Public Land to Drilling	https://www.nytimes.com/2022/04/15/climate/biden-drilling-oil-leases.html	prices	2022-04-15 20:51:32
ビジネス	ダイヤモンド・オンライン - 新着記事	東大合格者減少で男子御三家・武蔵の校長が危機感、「“受験教育は悪”から脱却」の新方針 - わが子に最強の中高一貫校＆小学校＆塾	https://diamond.jp/articles/-/301599	東大合格者減少で男子御三家・武蔵の校長が危機感、「“受験教育は悪から脱却」の新方針わが子に最強の中高一貫校小学校塾私立中高一貫校、男子御三家の一角、武蔵が今年、創立周年を迎えた。	2022-04-16 05:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	副業を本業にする最高のタイミングとは？見極める「3つのポイント」 - 2万人が学んだ「週末起業」塾	https://diamond.jp/articles/-/301660	面接	2022-04-16 05:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	40代でリストラ候補に…中高年の「自衛術」を、追い出し部屋問題と戦った労組委員長が直伝 - ステルスリストラ 気付けばあなたも	https://diamond.jp/articles/-/301280	労働組合	2022-04-16 05:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	939人が選んだ「ベスト」ゴルフ場ランキング2022【完全版】5位はABC倶楽部、1位は？ - 最強のゴルフ ビジネス・人脈に効く！	https://diamond.jp/articles/-/301265	最強	2022-04-16 05:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	東京海上・SOMPO・MS＆ADで唯一、減収に陥った企業とその要因は？【四半期決算報ピックアップ】 - ダイヤモンド 決算報	https://diamond.jp/articles/-/301671	sompo	2022-04-16 05:05:00
北海道	北海道新聞	養鶏場で鳥インフル疑い　北海道白老町、５２万羽飼育	https://www.hokkaido-np.co.jp/article/670232/	高病原性鳥インフルエンザ	2022-04-16 05:32:00
北海道	北海道新聞	台風１号が温帯低気圧に	https://www.hokkaido-np.co.jp/article/670231/	温帯低気圧	2022-04-16 05:22:00
ビジネス	東洋経済オンライン	5日間のタイ旅行で感じた会社員が行くハードル 2年1カ月ぶりに海外へ､現地の様子をレポート | 旅行 | 東洋経済オンライン	https://toyokeizai.net/articles/-/581789?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2022-04-16 05:30:00