投稿時間:2022-07-20 06:18:25 RSSフィード2022-07-20 06:00 分まとめ(25件)

カテゴリー等	サイト名等	記事タイトル・トレンドワード等	リンクURL	頻出ワード・要約等/検索ボリューム	登録日
AWS	AWS Compute Blog	Selecting Network Switches for Your AWS Outposts	https://aws.amazon.com/blogs/compute/selecting-network-switches-for-your-aws-outposts/	Selecting Network Switches for Your AWS OutpostsThis blog post is written by Frankie Negro Outposts Solution Architect AWS Outposts is a family of fully managed solutions that extend AWS infrastructure services APIs and tools to customer premises Outposts is available in a variety of form factors from U and U Outposts servers to U Outposts racks AWS Outposts is …	2022-07-19 20:25:11
AWS	AWS for SAP	Run your most IOPS-intensive SAP workloads on AWS with Amazon EBS io2 Block Express	https://aws.amazon.com/blogs/awsforsap/ebs-io2-block-express-sap-on-aws/	Run your most IOPS intensive SAP workloads on AWS with Amazon EBS io Block ExpressIntroduction AWS has been supporting SAP workloads in the cloud since and SAP customers in the cloud since Over these years our customers running SAP workloads have witnessed unprecedented growth in the data generated by their enterprises As a consequence customers have been looking for low latency and enhanced performance for their databases …	2022-07-19 20:53:41
AWS	AWS	How to automate IT Operations on AWS | Amazon Web Services	https://www.youtube.com/watch?v=GuWj_mlyTug	How to automate IT Operations on AWS Amazon Web ServicesIn this video you ll see how you can automate IT operations and IT service management ITSM with AWS Systems Manager Using Systems Manager automation capabilities you can decrease time to resolution of critical incidents reduce manual effort and improve your security posture at scale For more information on this topic please visit the resources below Subscribe More AWS videos More AWS events videos ABOUT AWSAmazon Web Services AWS is the world s most comprehensive and broadly adopted cloud platform offering over fully featured services from data centers globally Millions of customers ーincluding the fastest growing startups largest enterprises and leading government agencies ーare using AWS to lower costs become more agile and innovate faster ITOperations AWSSystemsManager ITSM Automating AWS AmazonWebServices CloudComputing	2022-07-19 20:46:29
海外TECH	Ars Technica	Critical flaws in GPS tracker enable “disastrous” and “life-threatening” hacks	https://arstechnica.com/?p=1867912	critical	2022-07-19 20:13:27
海外TECH	Ars Technica	Amazon Prime Video finally gets a desperately needed redesign	https://arstechnica.com/?p=1867889	android	2022-07-19 20:01:55
海外TECH	DEV Community	What are the components of system design?	https://dev.to/educative/what-are-the-components-of-system-design-49gi	What are the components of system design Learning system design can give engineers and managers a serious advantage in the job market It helps engineers by learning precisely why and when to make certain design decisions and managers can better understand how these decisions affect business processes The building blocks approach describes common core components of system design so that you can reattribute your knowledge to solve problems of any size The concept of system design is very complicated and constantly builds upon itself This article covers the components or main building blocks of modern system design If you want to familiarize yourself with some other basics of system design or other preliminary concepts like system design patterns or scalable web applications check out this article on The complete guide to system design We ll go over What is system design The components of modern system designLoad balancersKey value storeBlob storageDatabasesRate limitersMonitoring systemDistributed system messaging queueDistributed unique ID generatorDistributed searchDistributed logging serviceDistributed task schedulerGet started with modern system design today What is system design At its simplest system design is the process of defining building blocks and their integration APIs and data models that all function together to create large scale systems It is important to keep in mind that each system is designed to meet certain predetermined functional and non functional requirements System design aims to build systems that are reliable effective and maintainableReliable systems handle faults failures and errors Effective systems meet all user needs as well as business requirements Maintainable systems are flexible and easy to scale up or down The addition of new features is simple in maintainable systems as well System design uses the concepts of computer networking parallel computing and distributed systems to build systems that perform and scale well System design concepts build on a prior knowledge of distributed systems In short distributed systems are collections of computers that collaborate to form one cohesive computer for the end user This style of system design architecture is known for scaling well but for being inherently complex The components of modern system designA more accurate term to describe these components is building blocks The idea of modern system design stems from the approach of piecing together building blocks to form one cohesive piece By treating separate system design concepts as building blocks to form a larger whole we can break down complex problems in a digestible and understandable way System design problems typically have some overarching similarities However most of the specific details are unique By separating these unique building blocks and describing them one at a time we can then utilize them as independent building blocks in system design It is important to consider the software design patterns that we see when it comes to large scale system design Many of the building blocks discussed in this article are also available for use in public clouds You may be familiar with some of these services offered through Amazon Web Services AWS Microsoft Azure and Google Cloud Platform GCP Learn more about the product design of the cloud computing service Azure Load balancersLoad balancing is a key building block of system design It involves delegating tasks over a set width of resources There may be millions of requests per second to a system on average Load balancers ensure that all of these requests can be processed by dividing them between available servers This way the servers will have a more manageable stream of tasks and it is less likely that one server will be overburdened with requests Evenly distributing the computational load allows for faster response times and the capacity for more web traffic Load balancers are a crucial part of the system design process They enable several key properties required for modern web design Scaling Load balancers facilitate scaling either up or down by disguising changes made to the number of servers Availability By dividing requests load balancers maintain availability of the system even in the event of a server outage Performance Directing requests to servers with low traffic decreases response time for the end user Key value storesA key value store or key value database are storage systems similar to hash tables or dictionaries Hash tables and dictionaries are associative as they store information as a pair in the key value format Information can easily be retrieved and sorted as a result of every value being linked to a key Key value stores are distributed hash tables DHT Distributed hash tables are just decentralized versions of hash tables This means they share the key value pair and lookup methods The keys in a key value store treat data as a single opaque collection The stored data could be a blob server name image or anything the user wants to store The values are referred to as opaque data types since they are effectively hidden by their method of storage It is important that data types are opaque in order to support concepts like information hiding and object oriented programming OOP Examples of contemporary large scale key value stores are Amazon s DynamoDB and Microsoft Cassandra Blob storageBlob or binary large object storage is a storage solution for unstructured data This data can be mostly any type photos audio multimedia executable code etc Blob storage uses flat data organization patterns meaning there is no hierarchy of directories or sub directories Most blob storage services such as Microsoft Azure or AWS S are built around a rule that states write once read many or WORM This ensures that important data is protected since once the data is written it can be read but not changed Blob stores are ideal for any application that is data heavy Some of the most notable users of blob stores are YouTube Google Cloud Storage Netflix Amazon S Facebook Tectonic These services generate enormous amounts of data through large media files It is estimated that YouTube alone generates a petabyte terabytes of data every day DatabasesTraditional methods of file storage have significant limitations when it comes to scaling and flushing out the functionality of a system The answer to these constraints is databases A database is an organized collection of data that can be easily accessed and modified Databases exist to make the process of storing retrieving modifying and deleting data simpler There are two basic types of databases SQL relational databasesNoSQL non relational databasesIn short relational databases are structured use a predetermined schema and record data such as contact numbers and addresses Non relational databases are unstructured and use a dynamic schema Non relational databases are file directories that store information like personal profiles or shopping preferences Databases are an almost universal building block of system design and there is a lot to cover To dive deeper into databases check out this Database design tutorial Rate limitersA rate limiter sets a limit for the number of requests a service will fulfill It will throttle requests that cross this threshold Rate limiters are an important line of defense for services and systems They prevent services from being flooded with requests By disallowing excessive requests they can mitigate resource consumption In some cases rate limiters can perform a similar function to load balancers In systems that process large amounts of data they help to control the flow of data between machines Monitoring systemsMonitoring systems are software that allow system administrators to monitor infrastructure This building block of system design is important because it creates one centralized location for observing the overall performance of a potentially large system of computers in real time Monitoring systems should have the ability to monitor factors such as CPUsServer memoryRoutersSwitchesBandwidthApplicationsPerformance and availability of important network devices Distributed messaging queuesA messaging queue is an intermediary between two connected entities knowns as producers and consumers A producer creates messages and consumers receive and process them Messaging queues help improve performance through asynchronous communication since producers and consumers act independently of each other As a result a messaging queue helps to decouple or reduce dependency in the system This improves reliability and allows for a simpler less cluttered system design In addition asynchronous messaging facilitates scalability More consumers can be added in order to compensate for increased load There are several different use cases for a distributed messaging queue Sending emails As the name suggests a messaging queue enables sending emails Many different services are required to send emails for any number of reasons including account verification and password resets Data post processing Applications with multimedia support process images and video for different formats or platforms This can be a time consuming and resource intensive process but messaging queues enable offline processing in order to reduce end user latency Recommender systems Many sites use cookies to personalize a user s content This system retrieves the user data and processes it A messaging queue can be incorporated to make this process more efficient as background data processing can be time consuming Distributed unique ID generatorsIt is important to tag entities in a system with a unique identifier Millions of events may occur every second in a large distributed system so we need a method of distinguishing them A unique ID generator performs this task and enables the logging and tracking of event flows for debugging or maintenance purposes In most cases this is a universal unique ID UUID These are bit numbers that look like this eebda in hexadecimal With a number this size there is an enormous pool of possible IDs but it is not completely guaranteed that all will be unique We can use a central database that takes a given ID and makes it unique by incrementing the value by one each time Unfortunately with a database solution there is one point of failure that can interrupt the entire ID generation process The concept of using a database can be diversified with a range handler Range handlers feature multiple servers that each cover a range of ID values One server may be assigned the values to Once it reaches ID it will contact a central server to be assigned a new range of values This increases accessibility allowing the system to stay live in the event of a failure Facebook s own unique ID generator is called Canopy Canopy uses a system called TraceID to enable end to end performance tracing Distributed searchSearch bars can be crucial for browsing large websites with hundreds or even thousands of pages Most modern websites have search bars to help users find precisely what they re looking for Behind every search bar there is a search system Search systems are composed of three main entities Crawler finds fetches content and creates documentsIndexer builds a searchable indexSearcher runs the search query against the indexDistributed search systems are reliable and ideal for horizontal scalability A prime example of a digital product for distributed search is Elasticsearch Distributed logging servicesLogging is the process of recording data in particular the events that occur in a software system A log file is the recording of these details They may document service actions transactions microservices or any other data that may be helpful when debugging Logging in a distributed system is increasingly important as more and more designs move away from monolithic to microservice architectures Logging in a microservice architecture is convenient because the logs can be traced along a flow of events from end to end Since microservices can create interdependencies in a system and a failure of one service can cascade to others logging helps to determine the root cause of the failure Distributed task schedulersIn computing a task is a unit of work that requires computational resources for some specified amount of time These resources may be CPU timeMemoryStorageNetwork bandwidthIt is important for tasks like image uploading or social media posting to be asynchronous as to not hold the user waiting for background tasks to end Task schedulers mediate the supply demand balance between tasks and resources to control the workflow of the system By allocating resources task schedulers can ensure that task level and system level goals are met in an efficient manner Task schedulers are used across a wide range of systems Cloud computing servicesLarge distributed systemsSingle OS based nodesA notable example of a large distributed system task scheduler is Facebook s task scheduler Async Get started with modern system design todayYou should now have a solid idea of what it takes to design a system and why certain system design solutions are implemented This is by no means a complete list of all the possible building blocks you may need on your system design journey but they are a solid foundation to expand upon As mentioned every building block in system design has functional and non functional requirements that must be met After learning what each system does and why they are designed the way they are we recommend learning how to meet these requirements to build systems yourself We offer a brand new course designed by system design experts called Grokking Modern System Design for Software Engineers and Managers This course outlines all of the aforementioned building blocks and more and then goes on to introduce system design scenarios of real world applications There are five other building blocks integral to designing systems not discussed in this article They are Domain Name System DNS Content Delivery Network CDN Distributed CachingPublish Subscribe SystemSharded CountersBy the end you will understand how to create and implement modern system design building blocks as well as solve any potential system design problems posed in an interview Additionally you ll learn techniques protocols and design principles of large scale distributed systems that have successfully stood the test of time Just a few of these systems are YouTubeUberInstagram and many othersHappy learning Continue learning about system design on EducativeHow to prepare for the System Design Interview in System design fundamentals What is the CAP theorem How machine learning gives you an edge in system design Start a discussionWhat else about system design should a beginner be aware of Was this article helpful Let us know in the comments below	2022-07-19 20:23:14
海外TECH	DEV Community	Building micro frontends with Vercel + Lit	https://dev.to/btopro/building-micro-frontends-with-vercel-lit-45oe	Building micro frontends with Vercel LitI recently began exploring Vercel for microservice development in a course I was teaching Like any good professor it s important to propose a course topic you only sort of know about I knew web components how hard could Microfrontend development be This series will detail some of the lessons learned in developing a series of microservice web component projects the last few months These are beginning to distill down to follow a common pattern Front end brick that works anywhere ala web components lit based Something to broker and manage the API calls middleware class on front end End point that is blackboxy returning expected output Vercel for these examples though really AWS Lambda I hope that by covering the similarities and differences in approaches I ve taken to produce a few of these it can help others think through the potential benefits of web components Here s some links to start poking around Our storybook hooked up to Vercel look for the microservice Code Monorepo api has the endpoints for the microservices and elements contains source for our web components	2022-07-19 20:06:42
海外TECH	DEV Community	Crea imagenes elegantes de prueba en laravel-alternativas a fakerphp	https://dev.to/cybert22/crea-imagenes-elegantes-de-prueba-en-laravel-alternativas-a-fakerphp-57gm	Crea imagenes elegantes de prueba en laravel alternativas a fakerphpAprende a crear imágenes elegantes de prueba y almacenar en el servidor con éstos dos alternativas de fakerphp de forma sencilla Primera opciónProveedor de imágenes alternativo para fakerphp usando faker imagesINSTALACIÓNcomposer require dev mmo faker imagesUSOCreamos un seeder o factoriesphp artisan make factory admin ImageFactoryDentro de imageFactoryclass ImageFactory extends Factory protected model Image class public function definition faker Faker Factory create faker gt addProvider new Mmo Faker PicsumProvider faker faker gt addProvider new Mmo Faker LoremSpaceProvider faker return url gt cursos faker gt picsum public storage cursos false Para más información del paquete visita su repositorio Segunda opciónProveedor de imágenes alternativo para fakerphp usando picsum photosINSTALACIÓNcomposer require dev mmo faker imagesUsoCreamos un seeder o factoriesphp artisan make factory admin ImageFactoryDentro de imageFactoryclass ImageFactory extends Factory protected model Image class public function definition faker Faker Factory create faker gt addProvider new Smknstd FakerPicsumImages FakerPicsumImagesProvider faker return url gt cursos faker gt image public storage cursos false Para más información visita su repositorio Solución a posibles erroresphp artisan storage linkCambiar en el archivo env de local a publicFILESYSTEM DISK publicSi te sirvióno dudes en compartirlo hasta la próxima codero	2022-07-19 20:02:28
Apple	AppleInsider - Frontpage News	M2 MacBook Air teardown reveals accelerometer, simple cooling system	https://appleinsider.com/articles/22/07/19/m2-macbook-air-teardown-reveals-accelerometer-simple-cooling-system?utm_medium=rss	M MacBook Air teardown reveals accelerometer simple cooling systemThe repair experts at iFixit have completed a teardown of the new M MacBook Air revealing a very simple chip cooling mechanism an accelerometer and other details MacBook Air with MIn a YouTube clip posted on Tuesday iFixit walks viewers through disassembling the new MacBook Air model Although not a full teardown or repair guide the four minute clip reveals several interesting details about the new device Read more	2022-07-19 20:58:21
海外TECH	Engadget	Netflix lost nearly 1 million subscribers last quarter	https://www.engadget.com/netflix-q2-2022-earnings-subscriber-loss-204003713.html?src=rss	Netflix lost nearly million subscribers last quarterNetflix warned it might lose more subscribers in the second quarter of this year than it did in the first and that prediction has come true ーthough it wasn t as bad as feared The streaming service said it lost nearly million subscribers to be exact in Q That s far more than the member decline from Q but not as bleak as the million Netflix was prepared to part with The company attributed the slightly rosier outcome to quot better than expected quot subscriber growth particularly in areas like Asia Pacific The company still turned a billion net profit despite the shrinking customer base and unfavorable foreign exchange values for the US dollar Unfriendly exchange rates are a particularly difficult problem when nearly percent of revenue comes from outside the country Netflix said The media giant is expecting a turnaround for the third quarter if a slow one It s now predicting that it will add a net million subscribers While that s a far cry from the million Netflix added a year earlier it s a decided improvement over the past six months The strong start for Stranger Things could help ーthe nostalgic show is now Netflix s most watched season of English TV to date with over billion hours of viewing Netflix s recovery plan will sound familiar The company is still pinning its hopes on a lower priced ad supported tier due in early and expects to launch it in a quot handful of markets quot where there s already strong ad spending The service also plans to fight account sharing and is experimenting with ideas that include charging for additional homes The finished sharing system could also roll out in	2022-07-19 20:40:03
海外TECH	Engadget	Pixar's 'Lightyear' will hit Disney+ on August 3rd	https://www.engadget.com/lightyear-disney-plus-release-date-pixar-200039567.html?src=rss	Pixar x s x Lightyear x will hit Disney on August rdLightyear didn t hit the box office heights Disney hoped for despite it being the first Pixar movie to debut exclusively in theaters in over two years You won t have to wait too much longer to stream the movie at home though It s coming to Disney on August rd days after it landed in theaters While it s technically a Toy Story spinoff it has a meta element to it The action figure in the Toy Story movies is supposedly based on Lightyear an in universe film characters like Andy seemingly watched making this a quasi prequel This time around Buzz is in human form and is voiced by Chris Evans He s an astronaut who along with his crew and commander gets stuck on a strange planet and needs to find a way home The cast also includes Keke Palmer Peter Sohn Taika Waititi Dale Soules James Brolin and Uzo Aduba Get ready to blast off with Disney and Pixar s Lightyear streaming August only on DisneyPlus pic twitter com WiEsugーPixar Pixar July	2022-07-19 20:00:39
海外科学	NYT > Science	Ann Shulgin, Who Explored Psychedelics With Her Husband, Dies at 91	https://www.nytimes.com/2022/07/19/science/ann-shulgin-dead.html	Ann Shulgin Who Explored Psychedelics With Her Husband Dies at The couple advocated the use of hallucinogens in psychotherapy and documented their experiences with hundreds of drugs in two widely read books	2022-07-19 20:55:52
ニュース	BBC News - Home	Heatwave: Fires blaze after UK passes 40C for first time	https://www.bbc.co.uk/news/uk-62217282?at_medium=RSS&at_campaign=KARANGA	incidents	2022-07-19 20:38:50
ニュース	BBC News - Home	Ukraine war: Putin visits Iran in rare international trip	https://www.bbc.co.uk/news/world-europe-62218696?at_medium=RSS&at_campaign=KARANGA	foreign	2022-07-19 20:25:39
ニュース	BBC News - Home	England v South Africa: Ben Stokes' final ODI ends in 62-run defeat	https://www.bbc.co.uk/sport/cricket/62224127?at_medium=RSS&at_campaign=KARANGA	England v South Africa Ben Stokes x final ODI ends in run defeatBen Stokes final one day international ends in another England defeat as South Africa win the series opener in Chester le Street by runs	2022-07-19 20:32:09
ビジネス	ダイヤモンド・オンライン - 新着記事	早稲田より慶應が狙い目？入試の新潮流「総合型選抜入試」必勝法をプロが伝授 - 大学2022 劇変の序列・入試・就職	https://diamond.jp/articles/-/306457		2022-07-20 05:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	量子コンピューターは1台いくら？巨額部品ビジネスで「勝てる日本企業」8社リスト - 号砲！ 量子レース	https://diamond.jp/articles/-/306340	大阪大学	2022-07-20 05:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	W合格時の最新進学率【関関同立・産近甲龍編】過去5年データ比較で「真の人気序列」判明 - 大学2022 劇変の序列・入試・就職	https://diamond.jp/articles/-/306456		2022-07-20 05:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	岸田外交に必要な対中国「ハイブリッド戦略」、米国追随の抑止一辺倒は国益にならず - 田中均の「世界を見る眼」	https://diamond.jp/articles/-/306555	経済連携	2022-07-20 05:05:00
ビジネス	電通報 | 広告業界動向とマーケティングのコラム・ニュース	アスリートブレーンズ為末大の「緩急自在」vol.23	https://dentsu-ho.com/articles/8202	緩急自在	2022-07-20 06:00:00
北海道	北海道新聞	見延が銀、エペ初のメダル　世界フェンシング第５日	https://www.hokkaido-np.co.jp/article/707705/	世界選手権	2022-07-20 05:27:08
北海道	北海道新聞	＃シアターキノ３０周年　＃エッセー集出版　推しの映画に出合う	https://www.hokkaido-np.co.jp/article/707627/	映画	2022-07-20 05:03:00
北海道	北海道新聞	＜藤山博史のぶっちゃけ話＞ソロ活　自分を知る体験に	https://www.hokkaido-np.co.jp/article/707626/	自分	2022-07-20 05:02:00
北海道	北海道新聞	夢さぽピックアップ	https://www.hokkaido-np.co.jp/article/707625/	就職	2022-07-20 05:01:00
ビジネス	東洋経済オンライン	東洋医学の知恵で猛暑の夏を涼やかに過ごすワザ 汗のかき方と水分の摂り方が一番のポイント | 健康 | 東洋経済オンライン	https://toyokeizai.net/articles/-/603662?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋医学	2022-07-20 05:30:00