投稿時間:2021-09-07 20:30:26 RSSフィード2021-09-07 20:00 分まとめ(37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
TECH	Engadget Japanese	世界最小クラスの急速充電器。Switchユーザー必携の「Allite B」、GaN採用の高出力「Allite A2」	https://japanese.engadget.com/allite-b1-a2-104548273.html	世界最小クラスの急速充電器。	2021-09-07 10:45:48
IT	ITmedia 総合記事一覧	[ITmedia News] 自宅療養者に「ポカリスエット」無償配布　大塚製薬が直接支援　置き配を活用	https://www.itmedia.co.jp/news/articles/2109/07/news148.html	itmedia	2021-09-07 19:15:00
TECH	Techable（テッカブル）	神戸空港でロボット10体が「おもてなし」！？ AI Labと大阪大学が共同実証	https://techable.jp/archives/161566	ailab	2021-09-07 10:00:10
python	Pythonタグが付けられた新着投稿 - Qiita	【Python】ccxtライブラリをmacOSにインストールしてみた	https://qiita.com/hirockio2206/items/a3d9fe32fed8d1c9b83e	私はwindows環境にインストールして情報取得していたのですが、macOS環境にはインストールしていなかったのでインストールしてみたいと思います。	2021-09-07 19:39:42
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	MySql:複数のテーブルの結合でインデックスが使われず速度が出ないため、修正方法を教えてほしい	https://teratail.com/questions/358219?rss=all		2021-09-07 19:58:14
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Vue.jsを使ったwebサイトの公開	https://teratail.com/questions/358218?rss=all	Vuejsを使ったwebサイトの公開イメージ説明dfaeefecpng現在vuejsを使ってwebサイトを作っております。	2021-09-07 19:39:15
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Fortran サブルーチンがcallされるたびに中身を書き換えたい	https://teratail.com/questions/358217?rss=all	Fortranサブルーチンがcallされるたびに中身を書き換えたい現在オープンソースのCodenbspSaturneというものを利用して流体の数値計算を行っています。	2021-09-07 19:36:45
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	PHPにおけるタブ区切りファイルの読み込みについて	https://teratail.com/questions/358216?rss=all	PHPにおけるタブ区切りファイルの読み込みについてローカルのXAMPP環境で作成したPHPプログラムをサーバーのredmineBitnami環境で実行しようとしています。	2021-09-07 19:30:25
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ActiveXObjectの代替え	https://teratail.com/questions/358215?rss=all	ActiveXObjectの代替え下記の箇所がIEからChromeに変えたら動作しなくなってしまいました。	2021-09-07 19:27:06
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	【Discord.py】Discordのメッセージに、絵文字を追加したい	https://teratail.com/questions/358214?rss=all	【Discordpy】Discordのメッセージに、絵文字を追加したいDiscordpyで、QuckPollのように、AnbspBnbspCnbspDnbspnbspの絵文字をメッセージに追加したいんですが、UnknownnbspEmojinbsp絵文字がないといわれてしまいます。	2021-09-07 19:21:28
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	springBootでのPDFプレビュー表示	https://teratail.com/questions/358213?rss=all	springBootでのPDFプレビュー表示前提・実現したいことspringnbspbootを用いてWEBページを作成しています。	2021-09-07 19:17:45
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Googleフォームを自作のHTMLフォームに連携した際のファイルアップロードができない	https://teratail.com/questions/358212?rss=all	が、ここで再度ファイルのアップロードが可能という状態です。	2021-09-07 19:15:57
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Googleフォームで送信されたPDFをメールで送信したい	https://teratail.com/questions/358211?rss=all	Googleフォームで送信された添付ファイルをメールで送信したいのですが、フォームで送信される添付ファイルは、どれも内容が異なります。	2021-09-07 19:14:07
AWS	AWSタグが付けられた新着投稿 - Qiita	terraformのworkspaceを利用してVPCをマルチリージョンに展開する	https://qiita.com/instant_baby/items/7552d9e69c8546d2f1fd	clienttfprovider“awsregionlookupvarregion“terraformworkspaceregionaccesskey“secretkey“terraformworkspaceでworkspace名を呼びだしてvpcと文字列結合している。	2021-09-07 19:31:55
Docker	dockerタグが付けられた新着投稿 - Qiita	Artifact Registry から GKE にデプロイ	https://qiita.com/zou3paoooon/items/d41268a70e30a7ff82b3	①Artifactregistryにリポジトリを作成②nginxイメージを公式からpull③nginxイメージにタグづけ④イメージをArtifactregistryにpush⑤GKEクラスター作成⑥GKEクラスターにnginxコンテナをデプロイ⑦nginxを公開①Artifactregistryにリポジトリを作成nginxイメージを保存するためのリポジトリを、事前に作成する必要があります。	2021-09-07 19:05:35
Ruby	Railsタグが付けられた新着投稿 - Qiita	rails で `development?` を維持したまま新しい環境を追加したいとき	https://qiita.com/arc279/items/8630b660b4d7428b6a5f	railsでdevelopmentを維持したまま新しい環境を追加したいとき新しく環境を追加したい場合stagingとかはこちらの方法でできるけど、RailsenvdevelopmentとかRailsenvstagingはmethodmissingで実装されてるので、L例えばdevelopmentと同等の環境を新しくdevelopmentfoobarみたいに追加しようとしても、Railsenvdevelopmentfoobarとかやるとメソッド名にハイフンが使えないのでsyntaxerrorになるし、Railsenvdevelopmentがfalseのままになってしまうので想定通りにいかない。	2021-09-07 19:12:51
技術ブログ	Mercari Engineering Blog	お手軽な検索API構築	https://engineering.mercari.com/blog/entry/20210906-46976c788c/	hellip	2021-09-07 10:00:46
技術ブログ	Developers.IO	自治体DX推進手順書からクラスメソッドの内製化支援を考えてみる	https://dev.classmethod.jp/articles/municipal-dx-manual-and-cm-insource/	記事	2021-09-07 10:53:45
海外TECH	DEV Community	Reading and writing data across different AWS accounts with Amazon Managed Workflows for Apache Airflow v2.x	https://dev.to/aws/reading-and-writing-data-across-different-aws-accounts-with-amazon-managed-workflows-for-apache-airflow-v2-x-3319	Reading and writing data across different AWS accounts with Amazon Managed Workflows for Apache Airflow v xReading and writing data across different AWS accounts in you Apache Airflow DAGsAs regular readers will know I sometimes lurk in the Apache Airflow slack channel to see what is going on If you are new to Apache Airflow or want to get a deeper understanding then I highly recommend spending some time here The community is super welcoming and eager to help new participants It was during a recent session I came across an interesting problem that one of the builders was having which was how to access read write data in an S bucket which was in a different account to the one hosting Amazon Managed Workflows for Apache Airflow MWAA The rest of this post will be a quick look at the setup the error that occurred and how to configure MWAA so that you can read write data confidently across your different AWS accounts The problemA customer was using MWAA and within their workflow they were trying to upload data to an S bucket in a different AWS account to what their MWAA environment was running in When they triggered their DAG they were getting errors such as the following An error occurred AccessDenied when calling the PutObject operation Access DeniedTo help with troubleshooting the customer had created a test DAG that would try and read write files to a sample S bucket in three ways using boto the Python SDK for interacting with AWSusing Apache Airflow operators airflow providers amazon aws hooks susing the pandas Python library using sfsHere is the test DAG that the customer put togetherimport loggingimport randomfrom datetime import timedeltaimport pandas as pdimport botofrom airflow models import Variablefrom airflow import DAGfrom airflow operators python import PythonOperatorfrom airflow providers amazon aws hooks s import SHookfrom airflow utils dates import days agodef save file to s n random randint filename f demo n csv local file path f tmp filename demo data pd DataFrame num legs num wings num specimen seen index falcon dog spider fish demo data to csv local file path index False bucket name Variable get TEST BUCKET folder name Variable get TEST FOLDER s key f folder name boto filename logging info f local file path local file path bucket name bucket name key s key logging info Uploading CSV to S with boto s boto resource s try s meta client upload file local file path bucket name s key ExtraArgs ACL bucket owner full control except Exception as e logging info e pass logging info Done uploading CSV to S with boto logging info Uploading CSV to S with SHOOK s hook SHook s key f folder name shook filename try s hook load file local file path bucket name bucket name key s key acl policy bucket owner full control except Exception as e logging info e pass logging info Done uploading CSV to S with SHOOK logging info Uploading CSV to S with pandas demo data to csv f s bucket name folder name pandas filename index False logging info Done uploading CSV to S with pandas def run dag save file to s dag default args owner airflow depends on past False email airflow example com email on failure False email on retry False retries retry delay timedelta minutes with DAG demo default args dag default args description description schedule interval start date days ago tags test as dag test dag PythonOperator task id test dag python callable run dag What was interesting was that when they ran the DAG the boto function would write the file to the target S bucket but the other two failed Time to take a closer look The approachI wanted to see if I could reproduce this issue so the approach I took was to set up an environment running the same version of MWAA as the customer but initially use an S bucket in the SAME account to make sure that everything works as expected setup a new S bucket on a different AWS account and repeat to see if I could reproduce the error review CloudTrail and MWAA logs to see if I could identify any issues and fix The setupThe customer was running a standard MWAA environment in one AWS account so I quickly provisioned an environment using my CDK application which I have blogged about before I deployed the above DAG and then had to do a couple of things create a new S bucket in my case I called this ricsue airflow shook and within this bucket I created a folder called spermissions adjusted the permissions for the MWAA execution role which you can find by opening up your MWAA environment in the AWS console to include the new bucket I just created Resource arn aws s airflow ricsue cdk demo arn aws s airflow ricsue cdk demo arn aws s ricsue airflow shook arn aws s ricsue airflow shook Effect Allow within the MWAA console using the Admin menu option in the Apache Airflow UI I created two new variables TEST BUKCET with a value of ricsue airflow shook and TEST FOLDER with a value of spermissions Once I had completed that I enabled it and then manually triggered it It failed with the following error customer s py INFO local file path tmp demo csv bucket name ricsue airflow shook key spermissions boto demo csv customer s py INFO Uploading CSV to S with boto customer s py INFO Done uploading CSV to S with boto customer s py INFO Uploading CSV to S with SHOOK logging mixin py INFO base aws py INFO Airflow Connection aws conn id aws default logging mixin py INFO base aws py INFO No credentials retrieved from Connection logging mixin py INFO base aws py INFO Creating session with aws access key id None region name None logging mixin py INFO base aws py INFO role arn is None customer s py INFO Done uploading CSV to S with SHOOK customer s py INFO Uploading CSV to S with pandas taskinstance py ERROR Task failed with exceptionTraceback most recent call last File usr local lib python site packages airflow models taskinstance py line in run raw task self prepare and execute task with callbacks context task File usr local lib python site packages airflow models taskinstance py line in prepare and execute task with callbacks result self execute task context task copy File usr local lib python site packages airflow models taskinstance py line in execute task result task copy execute context context File usr local lib python site packages airflow operators python py line in execute return value self execute callable File usr local lib python site packages airflow operators python py line in execute callable return self python callable self op args self op kwargs File usr local airflow dags customer s py line in run dag save file to s File usr local airflow dags customer s py line in save file to s demo data to csv f s bucket name folder name pandas filename index False File usr local lib python site packages pandas core generic py line in to csv storage options storage options File usr local lib python site packages pandas io formats format py line in to csv csv formatter save File usr local lib python site packages pandas io formats csvs py line in save storage options self storage options File usr local lib python site packages pandas io common py line in get handle storage options storage options File usr local lib python site packages pandas io common py line in get filepath or buffer fsspec import optional dependency fsspec File usr local lib python site packages pandas compat optional py line in import optional dependency raise ImportError msg from NoneImportError Missing optional dependency fsspec Use pip or conda to install fsspec Whilst the boto and Apache Airflow operators had worked the Python library pandas had not This is because they were not installed on the Apache Airflow worker nodes I amended the requirements text to add the following fsspecsfsOnce uploaded the MWAA environment had to be updated This took approx mins but once it completed I was then able to trigger the DAG successfully No errors and when I looked in the local S bucket I could see the following files boto demo csvshook demo csvpandas demo csvSo the first step completed we have everything working as expected Now to change the DAG to write those files to an S bucket in a different AWS account The errorIn order to reproduce the same setup as the customer I had to create a new S bucket in a different AWS account in my case I called this ricsue airflow shook diffawsaccount and within this bucket I kept the same folder called spermissions I needed to UPDATE the Apache Airflow variable TEST BUCKET From within the Apache Airflow UI I edited the value to point to this new bucket and the different AWS account To make this easier I had two browsers running with Chrome running my AWS account with MWAA and Firefox running a different AWS account with just the Amazon S bucket Once I had made those changes I triggered the DAG again I did not expect ANY of these ways to upload the file to work given that these are two separate AWS accounts but I wanted to baseline Sure enough I got the following error with the DAG failing customer s py INFO local file path tmp demo csv bucket name ricsue airflow shook diffawsaccount key spermissions boto demo csv customer s py INFO Uploading CSV to S with boto customer s py INFO Failed to upload tmp demo csv to ricsue airflow shook diffawsaccount spermissions boto demo csv An error occurred AccessDenied when calling the PutObject operation Access Denied customer s py INFO Done uploading CSV to S with boto customer s py INFO Uploading CSV to S with SHOOK logging mixin py INFO base aws py INFO Airflow Connection aws conn id aws default logging mixin py INFO base aws py INFO No credentials retrieved from Connection logging mixin py INFO base aws py INFO Creating session with aws access key id None region name None logging mixin py INFO base aws py INFO role arn is None customer s py INFO An error occurred when calling the HeadObject operation Forbidden customer s py INFO Done uploading CSV to S with SHOOK customer s py INFO Uploading CSV to S with pandas taskinstance py ERROR Task failed with exceptionTraceback most recent call last File usr local airflow local lib python site packages sfs core py line in call s out await method additional kwargs File usr local airflow local lib python site packages aiobotocore client py line in make api call raise error class parsed response operation name botocore exceptions ClientError An error occurred AccessDenied when calling the CreateBucket operation Access DeniedThe above exception was the direct cause of the following exception Traceback most recent call last File usr local lib python site packages airflow models taskinstance py line in run raw task self prepare and execute task with callbacks context task File usr local lib python site packages airflow models taskinstance py line in prepare and execute task with callbacks result self execute task context task copy File usr local lib python site packages airflow models taskinstance py line in execute task result task copy execute context context File usr local lib python site packages airflow operators python py line in execute return value self execute callable File usr local lib python site packages airflow operators python py line in execute callable return self python callable self op args self op kwargs File usr local airflow dags customer s py line in run dag save file to s File usr local airflow dags customer s py line in save file to s demo data to csv f s bucket name folder name pandas filename index False File usr local lib python site packages pandas core generic py line in to csv storage options storage options File usr local lib python site packages pandas io formats format py line in to csv csv formatter save File usr local lib python site packages pandas io formats csvs py line in save storage options self storage options File usr local lib python site packages pandas io common py line in get handle storage options storage options File usr local lib python site packages pandas io common py line in get filepath or buffer filepath or buffer mode fsspec mode storage options or File usr local airflow local lib python site packages fsspec core py line in open kwargs File usr local airflow local lib python site packages fsspec core py line in open files fs makedirs parent exist ok True for parent in parents File usr local airflow local lib python site packages fsspec core py line in lt listcomp gt fs makedirs parent exist ok True for parent in parents File usr local airflow local lib python site packages fsspec asyn py line in wrapper return sync self loop func args kwargs File usr local airflow local lib python site packages fsspec asyn py line in sync raise result File usr local airflow local lib python site packages fsspec asyn py line in runner result await coro File usr local airflow local lib python site packages sfs core py line in makedirs await self mkdir path create parents True File usr local airflow local lib python site packages sfs core py line in mkdir await self call s create bucket params File usr local airflow local lib python site packages sfs core py line in call s raise errPermissionError Access DeniedAs we can see all three methods failed Exactly what I expected What was strange was that the customer was not seeing this issue and was able to write to the target S bucket using boto Lets see how to reproduce that in my environment The fixWithin your Amazon S bucket you have the ability to define bucket policies that allow access to read write files from other AWS accounts In the NEW AWS account I created the following bucket policy for the new bucket I had created ricsue airflow shook diffawsaccount This is what I added Version Statement Effect Allow Principal AWS arn aws iam role mwaa eks role Action s GetObject s GetBucket s List s PutObject Resource arn aws s ricsue airflow shook diffawsaccount arn aws s ricsue airflow shook diffawsaccount The policy containers the arn of the MWAA execution role for my MWAA environment in my original AWS account configures allowed actions in this instance I have narrowed it down to these actions GetObject GetBucket List and PutObject and then configured the target S buckets resources here it is all resources under this bucket but you could also reduce the scope to just certain folders if you wanted to When I saved this and then re ran the DAG Success it all worked customer s py INFO local file path tmp demo csv bucket name ricsue airflow shook diffawsaccount key spermissions boto demo csv customer s py INFO Uploading CSV to S with boto customer s py INFO Done uploading CSV to S with boto customer s py INFO Uploading CSV to S with SHOOK logging mixin py INFO base aws py INFO Airflow Connection aws conn id aws default logging mixin py INFO base aws py INFO No credentials retrieved from Connection logging mixin py INFO base aws py INFO Creating session with aws access key id None region name None logging mixin py INFO base aws py INFO role arn is None customer s py INFO Done uploading CSV to S with SHOOK customer s py INFO Uploading CSV to S with pandas customer s py INFO Done uploading CSV to S with pandas python py INFO Done Returned value was None taskinstance py INFO Marking task as SUCCESS dag id demo task id test dag execution date T start date T end date T taskinstance py INFO downstream tasks scheduled from follow on schedule check logging mixin py INFO local task job py INFO Task exited with return code But wait that does not describe the customer problem They could get it working with boto so what is going on then I altered the bucket policy so that it had fewer permissions specifically removing the List as follows Version Statement Effect Allow Principal AWS arn aws iam role mwaa eks role Action s GetObject s GetBucket s PutObject Resource arn aws s ricsue airflow shook diffawsaccount arn aws s ricsue airflow shook diffawsaccount And when I re ran the DAG boto worked but the S Hook and the pandas failed with permissions errors customer s py INFO local file path tmp demo csv bucket name ricsue airflow shook diffawsaccount key spermissions boto demo csv customer s py INFO Uploading CSV to S with boto customer s py INFO Done uploading CSV to S with boto customer s py INFO Uploading CSV to S with SHOOK logging mixin py INFO base aws py INFO Airflow Connection aws conn id aws default logging mixin py INFO base aws py INFO No credentials retrieved from Connection logging mixin py INFO base aws py INFO Creating session with aws access key id None region name None logging mixin py WARNING usr local airflow local lib python site packages watchtower init py WatchtowerWarning Failed to deliver logs None logging mixin py INFO base aws py INFO role arn is None customer s py INFO An error occurred when calling the HeadObject operation Forbidden customer s py INFO Done uploading CSV to S with SHOOK customer s py INFO Uploading CSV to S with pandas taskinstance py ERROR Task failed with exceptionTraceback most recent call last File usr local airflow local lib python site packages sfs core py line in call s out await method additional kwargs File usr local airflow local lib python site packages aiobotocore client py line in make api call raise error class parsed response operation name botocore exceptions ClientError An error occurred AccessDenied when calling the CreateBucket operation Access DeniedThe above exception was the direct cause of the following exception Traceback most recent call last File usr local lib python site packages airflow models taskinstance py line in run raw task self prepare and execute task with callbacks context task File usr local lib python site packages airflow models taskinstance py line in prepare and execute task with callbacks result self execute task context task copy File usr local lib python site packages airflow models taskinstance py line in execute task result task copy execute context context File usr local lib python site packages airflow operators python py line in execute return value self execute callable File usr local lib python site packages airflow operators python py line in execute callable return self python callable self op args self op kwargs File usr local airflow dags customer s py line in run dag save file to s File usr local airflow dags customer s py line in save file to s demo data to csv f s bucket name folder name pandas filename index False File usr local lib python site packages pandas core generic py line in to csv storage options storage options File usr local lib python site packages pandas io formats format py line in to csv csv formatter save File usr local lib python site packages pandas io formats csvs py line in save storage options self storage options File usr local lib python site packages pandas io common py line in get handle storage options storage options File usr local lib python site packages pandas io common py line in get filepath or buffer filepath or buffer mode fsspec mode storage options or File usr local airflow local lib python site packages fsspec core py line in open kwargs File usr local airflow local lib python site packages fsspec core py line in open files fs makedirs parent exist ok True for parent in parents File usr local airflow local lib python site packages fsspec core py line in lt listcomp gt fs makedirs parent exist ok True for parent in parents File usr local airflow local lib python site packages fsspec asyn py line in wrapper return sync self loop func args kwargs File usr local airflow local lib python site packages fsspec asyn py line in sync raise result File usr local airflow local lib python site packages fsspec asyn py line in runner result await coro File usr local airflow local lib python site packages sfs core py line in makedirs await self mkdir path create parents True File usr local airflow local lib python site packages sfs core py line in mkdir await self call s create bucket params File usr local airflow local lib python site packages sfs core py line in call s raise errPermissionError Access DeniedSo we can close that loop We now understand under what scenarios this might work target S bucket policy not having the right permissions for the various methods of uploading files and we can address solve this as needed ConclusionIn this post I showed you how you can set up your S buckets so that you can use them to read and write data from your MWAA environment I showed you how this works whether you are doing this via boto using the Apache Airflow S operator or doing this via a third party Python library Please let me know via the comments of any additional questions or comments you have on this post	2021-09-07 10:33:12
海外TECH	DEV Community	Introducing Magic URL Login to Appwrite	https://dev.to/appwrite/introducing-magic-url-login-to-appwrite-2l	Introducing Magic URL Login to AppwriteAppwrite introduces Magic URL as an authentication method which allows users to create an account without providing a password and login with a URL sent via an E Mail This feature is especially useful if you want to provide a passwordless authentication process for your application ️SetupLet s learn how we can add Magic URL Authentication to a Web Application using our Web SDK The same can be done with our Flutter SDK and Android SDK The first step is to add our Web SDK to our project with NPM like this npm install appwrite saveIf you re using a bundler like Rollup or webpack you can import the Appwrite module when you need it import Appwrite from appwrite To install with a CDN content delivery network add the following script to your HTML file before you use any Appwrite services lt script src gt lt script gt The next step is to initialize your SDK code with your project ID which can be found in your project settings page Init your Web SDKconst appwrite new Appwrite appwrite setEndpoint http localhost v Your Appwrite Endpoint setProject xdfkj Your Appwrite Project ID Create a Magic URLOnce your SDK is setup access the Account service and call the createMagicURLSession method The method accepts an e mail address and a redirect URL as arguments Initiate the Magic URL loginappwrite account createMagicURLSession name example com http localhost then response gt console log response Success error gt console log error Failure If the createMagicURLSession method completes without error the request sends the user an email with a URL containing a secret key for the next step When the user clicks the link they are redirected back to the URL you provided with the secret key and userId values attached to the URL query string This link is valid for hour If the e mail passed did not belong to any existing user this request will also create a user for the passed e mail address Login with a Magic URLNow that the user is able to initialize the authentication process we need to complete it by handling the redirect from the URL provided in the e mail Use the updateMagicURLSession method and call it with the secret and userId values from the URL s query string Please note that in order to avoid a Redirect Attack the only valid redirect URLs are the ones from domains you have set when adding your platforms in the console interface const urlParams new URLSearchParams window location search const userId urlParams get userId const secret urlParams get secret let promise appwrite account updateMagicURLSession userId secret promise then function response console log response Success function error console log error Failure If the updateMagicURLSession succeeded the user is now logged in Note that once a link is used it cannot be used again ConclusionIf you need help or encounter any difficulties setting up Magic URL Login with Appwrite please join our Discord ReferencesAppwrite DiscordAppwrite DocumentationAppwrite Homepage	2021-09-07 10:17:45
海外TECH	DEV Community	Making digital currency; How to create a new cryptocurrency	https://dev.to/ahmadradindev/making-digital-currency-how-to-create-a-new-cryptocurrency-2c7	Making digital currency How to create a new cryptocurrencyIn recent years many startups have made a lot of money by creating a digital currency and selling tokens in the initial public offering Creating a new digital currency may seem like an impossible process to most people While making digital currency is possible if you have enough knowledge in this field In this article we will introduce you to the methods of making a digital currency and at the end we will answer some common questions in this regard Why are new digital currencies being created Even if virtual money has been available to the public for a long time Bitcoin is the first known and most successful cryptocurrency in the cryptocurrency market Many cryptocurrencies have been created today the most popular of which are Bitcoin Ripple and Atrium Some unique features make companies and individuals think about creating cryptocurrencies The most important features of digital currency are cryptography security and confidentiality no need to monitor a central institution transparency of transactions fast transactions and ease of transfer The difference between coins and digital currency tokensSome people mistakenly use tokens and quins as synonyms While Token and Quinn are different The most important thing that distinguishes a token from a quin is the lack of an independent blockchain Tokens are created on the platform of other blockchains But Quinn has an independent blockchain Another important difference between coins and tokens is that coins are used to buy and sell and are considered a method of payment While most tokens can be used for use in an application or as an asset Bitcoin Atrium Ripple and Light Coin are the most popular coins in the digital currency market Tetra Chainlink Dai and Avi are also in the category of tokens Digital currency making training Introducing methods Method one Create a new digital currency by creating tokensOne way to make digital currency is to create tokens As we have said a token is a digital currency that does not have its independent blockchain and has been created and launched in the context of another blockchain For this reason when a token is generated there is no need to work on the rules of consensus Making tokens is cost effective for blockchain developers because they do not need the astronomical cost of designing a blockchain to achieve their goals Of course it is also important to note that many digital currencies when in their infancy are implemented on another blockchain platform to save costs but once they have been sufficiently developed a dedicated blockchain for They are used to launch The token can be created on all blockchain platforms that use smart contracts Atrium is one of the most popular token building platforms At the time of writing Atrium has hosted more than of the tokens on the market Bainenschin Ias Kazmas Thezos and Theron are other common platforms for making tokens Atrium s programming language is solidity Solidarity uses concepts that exist in other programming languages ​​such as PHP It is a high level programming language that has all the capabilities and capabilities needed for blockchain software Method Create digital currency by copying and modifying current blockchainsAnother way to build digital currency is to use open source blockchains Open source blocks are made available to the public with programming code after they are created Atrium and Bitcoin programming codes are also open source and can be accessed by anyone on GitHub Many blockchains have been launched following the example of these two digital currencies For example by making a few changes to the Bitcoin blockchain the LightCoin network is created Method Create a digital currency by creating a new blockchainBuild digital currency through the new blockchainBuilding and designing a blockchain network is another way to create a new digital currency In a blockchain data is stored in blocks and forms an interconnected chain This structure creates an immutable storage system The blocks are connected using hashes Creating a new blockchain requires deep programming knowledge and a lot of time In the following the steps of creating a new digital currency through making blockchain are outlined in general Select the consensus mechanismConsensus mechanisms are protocols for verifying transactions performed in blockchain without the need for a third party intermediary Proof of work and the stock proof is currently the most well known and basic blockchain consensus mechanisms Select the blockchain platformThe correct choice of blockchain platform depends on the consensus mechanism you have chosen The best blockchain operating systems are EthereumWaves WAVES Hyperledger FabricNEMIBM blockchainNxt NXT HydraChainBlockStarterBigChainDBEOSQuorumIOTACoinListMultiChainOpen chainChain CoreDesign the nodesYou need to decide how the blockchain works and design the nodes accordingly For example will the licenses be private or public Will the hosting be on premises web systems or cloud systems Specify the blockchain architectureBefore launching a digital currency you need to be sure of all aspects Because you can not change multiple blockchain parameters after startup For example you need to specify what address blockchain will follow to track exchanges of different cryptocurrencies Design the user interfaceIf your user interface is not good the cipher project will fail You need to make sure you are using the latest version of FTP servers databases etc Frequently Asked Questions about Making New Digital CurrenciesDoes making a digital currency always lead to profitability No More than a few hundred thousand digital currencies have been launched on various platforms many of which have failed For this reason all aspects of work must be well weighed before creating a digital currency What is the reason for the failure of some new digital currencies Unfortunately this perspective often causes us to become overwhelmed when it s time to start a new digital currency That s why we see so many teams being forgotten after spending so much money and energy to create a new digital currency without gaining popularity One of the main reasons for their failure is that they failed to do good marketing Therefore before any action the marketing system must be well defined What is the first step in building a new digital currency The first step in creating a new digital currency is to have a well defined digital currency white paper White paper in the world of digital currencies means a comprehensive and complete report of the problem that the introduced project seeks to solve Project objectives should be clearly defined within the white paper A standard and complete white paper include an abstract introduction problem definition product description technical details descriptions of the new digital currency details of the public offering and introduction of the development team How much does it cost to create a new digital currency Creating new passwords is not an easy task and will probably require some financial resources Unless you can handle things like development documentation and marketing The cost of building an encrypted currency depends on several factors and no specific number can be specified Concluding remarksCreating a new dedicated currency may seem like an attractive and profitable offer at first but we must not forget that there are many challenges in this direction For this reason sufficient market research must be done before any action is taken On the other hand the necessary capital must be provided for manufacturing and marketing Otherwise the digital currency project is likely to fail in its infancy	2021-09-07 10:09:48
海外TECH	DEV Community	10 Amazing og:image Inspiration 🎨✨	https://dev.to/zernonia/10-amazing-og-image-inspiration-5h67	Amazing og image Inspiration Designing an eye capturing og image can be easy and can be difficult That s why let s look at some of the awesome design that I ve curated here But before that just in case you don t know what is og here s a small preview of what og can do to display your website beautifully on Facebook So what is og Well we will leave it for another article list of og image inspiration SaaS CalendlyAs a popular software Calendly no doubt has one of the most simple and beautiful og image Just a simple screenshot of your landing page is sufficed If you are building a Software as a Service this approach is highly encouraged BilliBilli is another software that has a beautiful preview link when shared on social media Facebook Twitter Discord etc The emphasis on Mobile Device as shown in the og already provides the visitors that this is a mobile apps before landing on their websites NotionNotion is well known for its minimalistic design and flexible integrations with a tons of software The monotone art with white background style really distinguished them from the other SaaS Portfolio Agency Personal UnshiftFor a agency personal website first impression is always the key to client s heart When you share your website on social media Unshift has a very unique design which intrigued the client visitor to find out who is the awesome designer behind that banner Ali AliAliAli as a commercials director showcase their masterpiece straight from their og image Check it out Julia JohnsonAnother awesome screenshot of landing page as og image who says that style only applicable to SaaS Blog How Many PlantsHow Many Plants if you are a plant lover are you intrigued to click on it I m sure you do Dev toDev to is a Developer focused community This is not the normal og image this is the dynamic image that auto generated for every blogpost that has no cover photo IndieHackersIndiehackers let developers and entrepreneur to share they strategies and revenue thus og image design is so awesome in attracting anyone scrolling through social media Daily DevLastly another dynamic og image that showcase the blog easily Check out Daily Dev to see the awesome design That s it If you are interested to see more information regarding og Open Graph Protocol follow me See ya Cheers	2021-09-07 10:05:14
海外TECH	Engadget	Apple references four new iPhone models in MagSafe FCC filing	https://www.engadget.com/apple-references-new-iphone-models-magsafe-fcc-filing-100602419.html?src=rss	Apple references four new iPhone models in MagSafe FCC filingApple may be gearing up to launch four new iPhones at its next event that s expected to happen sometime this month toMac and MacRumors have spotted an FCC filing for a revised MagSafe charger and while it doesn t say how the new version improves upon its predecessor the document includes the device s testing information Apparently the tech giant tested it on four quot New Phone quot items as well as on four quot legacy quot devices The company listed models A A A and A in particular which correspond to the iPhone mini iPhone iPhone Pro and iPhone Pro Max respectively As MacRumors notes Apple revealed the upcoming iPhones model numbers when it registered them in the EEC database Unfortunately this FCC filing doesn t identify the four quot New Phone quot items it used for testing but it s very much possible that they re the current generation s direct successors A rumor about the iPhone that went around earlier this year said the device will have a stronger set of magnets in the back for the MagSafe charger We ll find out within the month if that s true ーApple s next iPhone event could take place next week and it s expected to announce the exact date for it as soon as today	2021-09-07 10:06:02
海外TECH	WIRED	One Woman’s Mission to Rewrite Nazi History on Wikipedia	https://www.wired.com/story/one-womans-mission-to-rewrite-nazi-history-wikipedia	One Woman s Mission to Rewrite Nazi History on WikipediaKsenia Coffman s fellow editors have called her a vandal and a McCarthyist She just wants them to stop glorifying fascistsーand start citing better sources	2021-09-07 10:56:42
医療系	医療介護 CBnews	子どもの医療費助成、都道府県は就学前が最多-厚労省調査	https://www.cbnews.jp/news/entry/20210907191825	厚生労働省	2021-09-07 19:55:00
金融	RSS FILE - 日本証券業協会	J-IRISS	https://www.jsda.or.jp/anshin/j-iriss/index.html	iriss	2021-09-07 10:28:00
金融	金融庁ホームページ	入札公告等を更新しました。	https://www.fsa.go.jp/choutatu/choutatu_j/nyusatu_menu.html	公告	2021-09-07 11:00:00
ニュース	BBC News - Home	Social care: Boris Johnson to unveil overhaul of sector in England	https://www.bbc.co.uk/news/uk-politics-58469872?at_medium=RSS&at_campaign=KARANGA	boris	2021-09-07 10:44:30
ニュース	BBC News - Home	Covid: No plans for October lockdown, says government	https://www.bbc.co.uk/news/uk-58474536?at_medium=RSS&at_campaign=KARANGA	holiday	2021-09-07 10:25:48
ニュース	BBC News - Home	Mexico: Flash flooding sweeps away cars after heavy rain	https://www.bbc.co.uk/news/world-latin-america-58476138?at_medium=RSS&at_campaign=KARANGA	ecatepec	2021-09-07 10:47:38
ビジネス	ダイヤモンド・オンライン - 新着記事	長大（9624）、5期連続となる「増配」を発表して、 配当利回り3.1％に！ 年間配当は5年で6.1倍に増加、 2021年9月期は前期比3円増の｢1株あたり51円｣に！ - 配当【増配・減配】最新ニュース！	https://diamond.jp/articles/-/281633	長大、期連続となる「増配」を発表して、配当利回りに年間配当は年で倍に増加、年月期は前期比円増の「株あたり円」に配当【増配・減配】最新ニュース長大が、年月期の配当予想の修正増配を発表し、配当利回りがに長大は、年月期の年間配当を前回予想比で「円」の増配、前期比では「円」の増配となる「株あたり円」に修正すると発表した。	2021-09-07 19:05:00
北海道	北海道新聞	東京円、１０９円台後半	https://www.hokkaido-np.co.jp/article/586708/	東京外国為替市場	2021-09-07 19:17:00
北海道	北海道新聞	死亡男性の身元判明　石狩市厚田区の事故	https://www.hokkaido-np.co.jp/article/586707/	軽トラック	2021-09-07 19:17:00
北海道	北海道新聞	しかりべつ湖コタンを選定　サントリー地域文化賞	https://www.hokkaido-np.co.jp/article/586705/	十勝管内	2021-09-07 19:08:00
北海道	北海道新聞	幕別無免許５人致死傷　少年に懲役５～７年の不定期刑	https://www.hokkaido-np.co.jp/article/586704/	不定期刑	2021-09-07 19:01:00
IT	週刊アスキー	スマホ向けゲーム『Dr.STONE バトルクラフト』リリース初週で100万DLを達成！	https://weekly.ascii.jp/elem/000/004/068/4068497/	android	2021-09-07 19:45:00
海外TECH	reddit	お前ら重大ニュースだ!今reddit coinがセール中でお得だぞ!なんと199.99ドル払うだけでTernion All-Powerful Awardが2個も贈れちゃうんだ!	https://www.reddit.com/r/newsokunomoral/comments/pjk23k/お前ら重大ニュースだ今reddit/	ewsokunomorallinkcomments	2021-09-07 10:02:38