投稿時間:2022-09-03 19:10:21 RSSフィード2022-09-03 19:00 分まとめ(12件)

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python	Pythonタグが付けられた新着投稿 - Qiita	【実用編】教師あり学習を全部学ぼう Part1:道具の準備	https://qiita.com/ryusei172525/items/2f6c47cc6b96ae152232	github	2022-09-03 18:09:49
js	JavaScriptタグが付けられた新着投稿 - Qiita	【PHP】同じ名前のcookieが重複して登録される不具合修正	https://qiita.com/siromofu3/items/194e1c7490466d73ffcc	cookie	2022-09-03 18:16:01
Ruby	Railsタグが付けられた新着投稿 - Qiita	SidekiqのActiveRecord::ConnectionTimeoutErrorを解決した話	https://qiita.com/LoveL29/items/6cfd74f1644374f6680d	tainadatabaseconnectionwi	2022-09-03 18:36:31
海外TECH	DEV Community	Create A Slideshow in HTML , CSS and JS	https://dev.to/herryjobn/create-a-slideshow-in-html-css-and-js-3omj	Create A Slideshow in HTML CSS and JSHow to create a slideshow in HTML and CSS and javascript So We ll not use any external source or script for our stunning automatic slider As we know a web slider slideshow is a flow of images or text that consists of displaying one element of the flow in a certain time interval In real time conditions there may be a need to put an image slideshow on web applications web pages or anywhere else Within seconds a developer considers using an existing jQuery plugin or something else or slider scripts While using such kinds of scripts sometimes there is a chance of code conflicts between the script libraries and the existing libraries used in the web application or pages and this takes time to get fixed If you will use any plugin to create a slideshow then keep in mind it can be slow down your web page speed and many other effects So we can t recommend using any external plugin Slideshow in HTML and CSSIf the slider need is simple and short you can build your own slideshow by using HTML CSS and JavaScript It is one of the best ways to create a slideshow This will get less time to perform and give no errors and time consuming So Let s start making it lt div class soft slideshow gt lt div class softSlides out gt lt div class numbers gt lt div gt lt img src style width gt lt div class text gt Your text here lt div gt lt div gt lt div class softSlides out gt lt div class numbers gt lt div gt lt img src style width gt lt div class text gt Your text here lt div gt lt div gt lt div class softSlides out gt lt div class numbers gt lt div gt lt img src style width gt lt div class text gt Your text here lt div gt lt div gt lt div gt lt br gt lt div style text align center gt lt span class bullets gt lt span gt lt span class bullets gt lt span gt lt span class bullets gt lt span gt lt div gt CSS Code lt style gt box sizing border box body font family Verdana sans serif softSlides display none img vertical align middle Slideshow container soft slideshow max width px position relative margin auto Caption text text color fff font size px padding px px position absolute bottom px width text align center Number text etc numbers color fff font size px padding px px position absolute top The bulletss bullets indicators bullets height px width px margin px background color bbb border radius display inline block transition background color s ease active background color Fading animation out webkit animation name out webkit animation duration s animation name out animation duration s webkit keyframes out from opacity to opacity keyframes out from opacity to opacity On smaller screens decrease text size media only screen and max width px text font size px lt style gt To get in detail and demo Read More Create A Slideshow In HTML And CSS	2022-09-03 09:44:14
海外TECH	DEV Community	Elastic Load Balancers	https://dev.to/aws-builders/elastic-load-balancers-36jg	Elastic Load Balancers Scalability and High AvailabilityScalability means that an a system can handle greater loads by adaptingWe can distinguish two types of scalability strategies Vertical Scalability scale up down Increase the size of the current instance ex from a t micro instance migrate to a a t large one Vertical scalability is common for non distributed systems such as databasesRDS ElastiCache are services that can scale verticallyHorizontal Scalability scale out in Increase the number of instances on which the application runsHorizontal scaling implies having a distributed systemIt s easy to scale horizontally thanks to could offerings such as ECHigh Availability means running our application in at least data centers AZs The goal of high availability is to survive a data center lossHigh Availability can be PassiveActiveLoad balancers can scale but not instantaneously contact AWS for a warm up Troubleshooting xx errors are client induced errorsxx errors are application induced errors server side errors Error means that the load balancer is at capacity or no registered targets can be foundIf the load balancer can t connect to the application it most likely means that the security group blocks the connectionMonitoring ELB access logs will log all the access requests to the LBCloudWatch Metrics will give aggregate statistics example connections counts Load Balancing BasicsLoad balancers are servers that forward internet traffic to multiple other servers most likely EC instances Why use load balances Spear load across multiple downstream instancesExpose a single point of access DNS to the applicationSeamlessly handle failures of downstream instances by using health checks Do regular health checks to registered instancesProvide SSL termination HTTPS for the website hosted on the downstream instancesEnforce stickiness for cookiesHigh availability across availability zones load balancer can be spread across multiple AZs not regions Cleanly separate public traffic from private trafficAn ELB Elastic Load Balancer is a managed load balancer which means AWS guarantees that it will be workingAWS takes care of upgrades maintenance and high availabilityAn ELB provides a few configuration options for us alsoIt costs less to setup our custom load balancer but it will be a lot more effort to maintain on the long runAn ELB is integrated with many AWS offering services it will be more flexible than a custom LB Health ChecksThey enable for a LB to know if an instance for which traffic is forwarded is available to reply to requestsThe health checks is done using a port and a route usually health If the response is not then the instance is considered unhealthy Types of Load Balancers on AWSAWS provides type of load balancers Classic Load Balancer v old generation supports HTTP HTTPS and TCPApplication Load Balancer v new generation supports HTTP HTTPS and WebSocketsNetwork Load Balancer v new generation supports TCP TLS secure TCP and UDPGateway Load Balancer new generation see VPC section of the notes It is recommended to use the new versionsWe can setup internal private and external public load balancers on AWS Classic Load Balancers CLB They support types of connections TCP layer and HTTP S layer Health checks are either TCP or HTTP basedCLBs provide a fixed hostname XXX region elb amazonaws com Application Load Balancers ALB They are a layer type load balancers only HTTP or HTTPS They allow load balancing to multiple HTTP applications across multiple machines target groups Also they allow to load balance to multiple applications on the same EC instance useful in case of containers They have support for HTTP and WebSockets They support redirects example for HTTP to HTTPSThey provide routing tables to different target groups Routing based on path in URLRouting based on the hostnameRouting based on query strings an headersALBs are great fit for micros services and container based applicationsALBs have port mapping features to redirect to dynamic ports in case ECSTarget groups can contain EC instances can be managed by an Auto Scaling Group ECS tasks managed by ECS itself Lambda Functions HTTP request is translated to a JSON eventIP Addresses must be private IP addressesALBs also provide a fixed hostname same as CLBs XXX region elb amazonaws comThe application servers behind the LB can not see the IP of the client who accessing them directly but they can retrieve for X Forwarded For header The port can be fetched from X Forwarded Port and the protocol from X Forwarded Proto Network Load Balancers NLB Network load balancers layer allow to Forward TCP and UDP traffic to the registered instancesHandle millions of requests per secondLess latency ms vs ms for ALB NLBs have one static IP per AZ and supports Elastic IPs can be used when whitelisting is necessary Use case for NLBs NLBs are used for extreme performance in case of TCP or UDP traffic example video games Instances behind an NLB don t see traffic coming from the load balancer they see traffic as it was coming from the outside world gt no security group is attached to LB gt security group attached to the target EC instance should be changed to allow traffic from the outside example on port StickinessIt is possible to implement stickiness in case of CLB and ALB load balancersStickiness means that the traffic from the same client will be forwarded to the same target instanceStickiness works by adding a cookie to the request which has an expiration date for controlling thestickiness periodPossible use case for stickiness we have to make sure that the user does not lose his session dataEnabling stickiness may bring imbalance to the load over the downstream target instances Cross Zone Load BalancingWith Cross Zone Load Balancing enabled each LB instance distributes traffic evenly across multiple AZsOtherwise ech LB node distributes requests evenly only in the AZ where it is registeredClassic Load Balancer Cross zone load balancing is disabled by defaultNo additional charges for cross zone load balancing if the feature is enabledApplication Load Balancer Cross zone load balancing is always on can not be disabledNo charges applied for cross zone load balancingNetwork Load Balancer Cross zone load balancing is disabled by defaultAdditional charges apply if the feature is enabled SSL TLS CertificatesAn SSL certificate allows traffic to be encrypted between the clients and the load balancers This ia called encryption in transit or in flight encryptionSSL Secure Socket LayerTLS newer version of SSL Transport Layer SecurityNowadays TLS are mainly used but we are still referring to it as SSLPublic SSL certificates are issued by a Certificate AuthoritySSL certificates have an expiration dates and they must be renewedSSL termination client can talk with a LB using HTTPS but internal traffic can be routed to a target using HTTPLoad balancer can load an X certificate which is a SSL TLS server certificate We can manage certificates in AWS using ACM AWS Certificate Manager HTTPS Listener We must specify a default certificateWe can add an optional list of certificates to support multiple domainsClients can use SNI Server Name Indication to specify which hostname want to reachAbility to specify a security policy to support older versions of SSL TLS for legacy clients like Internet Explorer lol SNI Server Name IndicationSNI solves the problem of being able to load multiple SSL certificates onto one web serverThere is a newer protocol which requires the client to indicate the hostname of the target server in the initial SSL handshakeIn case of AWS this only works for ALB NLB and CloudFront no CLB ELB Connection DrainingFeature naming In case of a CLB is called Connections DrainingIf we have a target group ALB NLB it is called Deregistration DelayConnection draining is the time to complete in flight requests while the instance is de registering or unhealthy Basically it allows the instance to terminate whatever it was doingThe LB will stop sending new requests to the target instance which is in progress of de registeringThe time period of the connection draining can be set between seconds to secondsIt also can be disabled set the period to seconds	2022-09-03 09:29:59
海外TECH	DEV Community	Running multiple frameworks in Astro	https://dev.to/dailydevtips1/running-multiple-frameworks-in-astro-5io	Running multiple frameworks in AstroIn the previous article we looked at adding React to an Astro project Today we ll look at how we can run multiple frameworks simultaneously in Astro This is a real superpower as we are free to mix and match frameworks Let s take the previous article as our starting point Get the branch from GitHubYou can technically choose any framework I ll be using Vue for this case Adding a second framework to AstroThe first thing we ll have to do is install the new framework For Vue we can run the following command npm run astro add vueOnce done you should see React and Vue setup in your astro config mjs file import defineConfig from astro config import react from astrojs react import vue from astrojs vue export default defineConfig integrations react vue Now we can add a new Vue component to our src components directory I ll call this file Vue vue super original lt script gt export default data return count name Vue lt script gt lt template gt lt button click count gt lt button gt lt pre gt count lt pre gt lt button click count gt lt button gt lt p gt I m a name component lt p gt lt template gt This is a basic counter we made for the React component And then we response with what language this specific component is in Now we can try and add this component to our index astro page import React from components React jsx import Vue from components Vue vue lt html lang en gt lt head gt lt meta charset utf gt lt link rel icon type image svg xml href favicon svg gt lt meta name viewport content width device width gt lt meta name generator content Astro generator gt lt title gt Astro lt title gt lt head gt lt body gt lt React client load gt lt hr gt lt Vue client load gt lt body gt lt html gt As you can see we decided to hydrate this on client load so the counter will work Read more about hydration Scroll down a little bit If we now run our application we should see both components active and working You can also find today s code in this GitHub repo Thank you for reading and let s connect Thank you for reading my blog Feel free to subscribe to my email newsletter and connect on Facebook or Twitter	2022-09-03 09:22:04
北海道	北海道新聞	自民・茂木氏、被害者救済へ尽力　旧統一教会問題「反省を」	https://www.hokkaido-np.co.jp/article/725882/	茂木敏充	2022-09-03 18:24:35
北海道	北海道新聞	東国原氏は「流浪の旅」　宮崎知事選に自民幹事長	https://www.hokkaido-np.co.jp/article/725888/	茂木敏充	2022-09-03 18:26:38
北海道	北海道新聞	中国、米の対台湾武器売却に反発　「必要な措置取る」	https://www.hokkaido-np.co.jp/article/725891/	空対空ミサイル	2022-09-03 18:25:00
北海道	北海道新聞	逮捕監禁疑いで２０代男を逮捕　札幌豊平署	https://www.hokkaido-np.co.jp/article/725889/	札幌市北区	2022-09-03 18:24:00
北海道	北海道新聞	東川で稲刈り始まる　黄金色の「ゆめぴりか」　新米は１０月上旬から店頭に	https://www.hokkaido-np.co.jp/article/725885/	上川管内	2022-09-03 18:05:00
ニュース	Newsweek	マジックマッシュルーム混入「チョコ」が未成年を狙って流通か...米当局が警告	https://www.newsweekjapan.jp/stories/world/2022/09/post-99538.php	「各種報道によれば、その多くがインスタグラム、スナップチャットやTikTokのようなアプリベースのプログラム上で販売されているようだ」と同検察局は述べ、フェンタニルは偽の処方薬やヤミ市場で販売される電子タバコなど、複数の異なる形で売られている可能性があり、マリファナと混ぜたものも見つかっているとつけ加えた。	2022-09-03 18:35:00