投稿時間:2022-06-20 21:35:54 RSSフィード2022-06-20 21:00 分まとめ(39件)

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IT	気になる、記になる…	Apple、中国BOEの｢iPhone 14｣向け有機ELパネルを評価開始か	https://taisy0.com/2022/06/20/158275.html	apple	2022-06-20 11:22:46
IT	ITmedia 総合記事一覧	[ITmedia News] 徳島県の病院がランサムウェア「Lockbit」被害　電子カルテと院内LANが使用不能に	https://www.itmedia.co.jp/news/articles/2206/20/news184.html	itmedia	2022-06-20 20:15:00
python	Pythonタグが付けられた新着投稿 - Qiita	AtCoderで入茶した感想【色変記事】	https://qiita.com/Michirakara/items/89ba033e9343a1ee02ef	atcoder	2022-06-20 20:52:35
python	Pythonタグが付けられた新着投稿 - Qiita	Effective Python 第2版 を自分なりにまとめてみる part4	https://qiita.com/Takayoshi_Makabe/items/d18df3835b07dd4d2c4a	brettslatkin	2022-06-20 20:50:20
python	Pythonタグが付けられた新着投稿 - Qiita	【ServiceNow】Requested Itemの添付ファイルを取得したい	https://qiita.com/masa2223/items/d8779c23120a8d80b33d	requesteditem	2022-06-20 20:18:43
js	JavaScriptタグが付けられた新着投稿 - Qiita	GeolocationAPIが止まらなくて困った話	https://qiita.com/hatayan_mk/items/f5799e1e84c128614de1	geolocationapi	2022-06-20 20:45:31
js	JavaScriptタグが付けられた新着投稿 - Qiita	Canvas要素の基本的な使い方	https://qiita.com/noty2008/items/58b83d4312c81dcf71f6	canva	2022-06-20 20:36:48
AWS	AWSタグが付けられた新着投稿 - Qiita	ec2ssmが便利だと思う	https://qiita.com/ponchi/items/1cf08a875772e1696963	ecssm	2022-06-20 20:23:46
海外TECH	MakeUseOf	What Is AES-256 Encryption? How Does It Work?	https://www.makeuseof.com/what-is-aes-256-encryption-how-does-it-work/	encryption	2022-06-20 11:45:14
海外TECH	MakeUseOf	Why Chinese Researchers Want to Destroy Starlink Satellites	https://www.makeuseof.com/why-chinese-researchers-want-to-destroy-starlink/	starlink	2022-06-20 11:20:14
海外TECH	DEV Community	Implementing Distributed Tracing in a Golang application	https://dev.to/signoz/implementing-distributed-tracing-in-a-golang-application-5cm1	Implementing Distributed Tracing in a Golang applicationThis tutorial was originally posted on SigNoz Blog and is written by Naman JainIn this article we will implement distributed tracing for a Golang application with three microservices To implement distributed tracing we will be using open source solutions SigNoz and OpenTelemetry so you can easily follow the tutorial What is distributed tracing Modern application architecture using cloud native containerization and microservices is a very complex distributed system A typical web search example will illustrate some of the challenges such a system needs to address A front end service may distribute a web query to many hundreds of query servers The query may also be sent to a number of other sub systems that may process advertisements or look for specialized results like images news etc This might involve database access cache lookup network call etc In total thousands of machines and many different services might be needed to process one search query Moreover web search users are sensitive to delays which can be caused by poor performance in any sub system An engineer looking only at the overall latency may know there is a problem but may not be able to guess which service is at fault nor why it is behaving poorly And such services are also not written and managed by a single team Also day by day new components might get added to the system Distributed tracing provides insights into the inner workings of such a complex system Tracing such complex systems enables engineering teams to set up an observability framework Distributed tracing gives insights into how a particular service is performing as part of the whole in a distributed software system It involves passing a trace context with each user request which is then passed across hosts services and protocols to track the user request In this article we will use OpenTelemetry and SigNoz to enable distributed tracing in a sample Golang application with microservices But before we deep dive into the implementation steps let us give you a brief context on OpenTelemetry and SigNoz OpenTelemetry and SigNozOpenTelemetry is a vendor agnostic set of tools APIs and SDKs used to instrument applications to create and manage telemetry data logs metrics and traces It aims to make telemetry data a built in feature of cloud native software applications OpenTelemetry provides the instrumentation layer to generate and export your telemetry data to a backend Then you need to choose a backend tool that will provide the data storage and visualization for your telemetry data That s where SigNoz comes into the picture SigNoz is a full stack open source APM tool that provides metrics monitoring and distributed tracing OpenTelemetry is the way forward for cloud native application owners who want to set up a robust observability framework It also provides you the freedom to choose any backend analysis tool SigNoz is built to support OpenTelemetry natively thus making a great combo Distributed Tracing in a Golang applicationWe will demonstrate implementing distributed tracing in a Golang application in the following sections Instrumenting the Golang app with OpenTelemetryRunning the sample Golang applicationVisualizing traces data with SigNoz dashboards PrerequisitesGo version ≥ For installation see getting startedMySQL Download the MySQL community version from hereIf your MySQL is configured with a password update it here serve for frontend For installation see SigNoz For instructions please refer to Installing SigNoz section Installing SigNozFirst you need to install SigNoz so that OpenTelemetry can send the data to it SigNoz can be installed on macOS or Linux computers in just three steps by using a simple installation script The install script automatically installs Docker Engine on Linux However on macOS you must manually install Docker Engine before running the install script git clone b main cd signoz deploy install shYou can visit our documentation for instructions on how to install SigNoz using Docker Swarm and Helm Charts When you are done installing SigNoz you can access the UI at http localhost SigNoz dashboard It shows services from a sample app that comes bundled with the application Instrumenting the Golang app with OpenTelemetryWe have built a sample Golang application for the purpose of this tutorial It has services user servicepayment service andorder serviceThese services are instrumented with OpenTelemetry libraries and when they interact with each other OpenTelemetry emits the telemetry data to OTel collector which comes bundled with SigNoz Application architecture along with OpenTelemetry OTel Collector and SigNozStep Clone sample Golang app repository and go to the root folderWe will be using a sample Golang app at this GitHub repo git clone https github com SigNoz distributed tracing golang sample gitcd distributed tracing golang sampleStep Install the required dependenciesCheck the list of all the required modules from go mod For OpenTelemetry we need go opentelemetry io contrib instrumentation github com gorilla mux otelmux v go opentelemetry io contrib instrumentation net http otelhttp v go opentelemetry io otel v go opentelemetry io otel exporters otlp otlptrace v go opentelemetry io otel exporters otlp otlptrace otlptracegrpc v go opentelemetry io otel sdk v go opentelemetry io otel trace v github com XSAM otelsql v All the dependencies can be installed using go mod tidygo mod vendorStep Configure the OpenTelemetry collectorIdeally you should start OpenTelemetry at the beginning of main before any other services start running When your program exits call Shutdown on the SDK to ensure the last bit of telemetry is flushed before the program exits tp config Init serviceName defer func if err tp Shutdown context Background err nil log Printf Error shutting down tracer provider v err tracer is later used to create spanstracer otel Tracer serviceName We also initialized the tracer which is later used to create custom spans Let s now understand what does Init function in config config go does Initialize exporter The exporter in SDK is responsible for exporting the telemetry signal trace out of the application to a remote backend logging to a file etc In this demo we are creating a gRPC exporter to send out traces to an OpenTelemetry Collector backend running at collectorURL SigNoz It also supports TLS and application auth using headers secureOption otlptracegrpc WithTLSCredentials credentials NewClientTLSFromCert nil config can be passed to configure TLSif len insecure gt secureOption otlptracegrpc WithInsecure exporter err otlptrace New context Background otlptracegrpc NewClient secureOption otlptracegrpc WithEndpoint collectorURL otlptracegrpc WithHeaders headers Construct trace provider TracerProvider provides access to instrumentation Tracers We configure it to sample all the traces and send the traces in batches to the collector The resource describes the object that generated the telemetry signals Essentially it must be the name of the service or application We set it to serviceName traceProvider sdktrace NewTracerProvider sdktrace WithSampler sdktrace AlwaysSample sdktrace WithSpanProcessor sdktrace NewBatchSpanProcessor exporter sdktrace WithResource resource NewWithAttributes semconv SchemaURL semconv ServiceNameKey String serviceName Now we are ready to configure various components in our application Step Instrument HTTP handler with OpenTelemetryWe are using gorilla mux for the HTTP router It can be instrumented with OpenTelemetry using otelmux router Use otelmux Middleware serviceName Now all the HTTP calls pass through the OpenTelemetry middleware Our services communicate with each other using HTTP APIs We need to configure our client to pass on the tracing metadata We can do that using func SendRequest ctx context Context method string url string data byte http Response error request err http NewRequestWithContext ctx method url bytes NewBuffer data if err nil return nil fmt Errorf create request error w err client http Client Wrap the Transport with one that starts a span and injects the span context into the outbound request headers Transport otelhttp NewTransport http DefaultTransport Timeout time Second return client Do request Note that the ctx parameter contains the tracing metadata of the parent span So now the client sends the metadata and the server can extract this and connect the tracing information of various services Apart from the instrumentation already provided by otelhttp library we might want to have custom spans for various purposes e g trace database call or trace function execution We can do that using ctx span tracer Start r Context update user amount defer span End We can also attach attributes events etc to this span Please refer to the documentation for that Step Instrument MySQL with OpenTelemetryDatabase lies in the hot path for most of the applications and any insights into its performance are valuable We instrument it with the help of github com XSAM otelsql And while making any DB call we pass on the context db err otelsql Open mysql datasourceName username password host dbName res err stmt ExecContext ctx p Vars Note is not yet officially supported by OpenTelemetry Running the sample Golang applicationStep ConfigurationTo set up OpenTelemetry to collect and export telemetry data you need to specify OTLP OpenTelemetry Protocol endpoint It consists of the IP of the machine where SigNoz is installed and the port number at which SigNoz listens OTLP endpoint for SigNoz   lt IP of the machine gt If you have installed SigNoz on your local machine then your endpoint is  If you have installed SigNoz on some domain then your endpoint is  Configuration for the following can be set up in env service configUSER URL localhost PAYMENT URL localhost ORDER URL localhost database configSQL USER rootSQL PASSWORD passwordSQL HOST localhost SQL DB signoz telemetry configOTEL EXPORTER OTLP ENDPOINT localhost INSECURE MODE trueStep Run the microservicesAs we have already cloned the repo in the above section from the root folder run these commands each in a separate terminal go run usersgo run paymentgo run orderStep Confirm table creation After running the services check if the tables ORDERS and USERS are created using the commands below mysql gt use signoz mysql gt show tables Visualizing Distributed Tracing data with SignozTo visualize the trace data with SigNoz we first need to generate some user data by interacting with the frontend Generating user data by interacting with the sample app You need to generate some user data to see how it appears in the SigNoz dashboard The sample application comes with a UI to interact with the app Use the below command in the root folder to launch the UI serve l frontendNow go to the app frontend running at localhost Perform the below given steps times to generate some data Create a user Click Create User button to create a new user in the MySQL db Transfer the fund Transfer some amount by clicking Transfer Fund button Place an order Place an order by selecting a product from the dropdown Now go to the SigNoz dashboard running on http localhost by default wait for some time and refresh the dashboard You will notice the list of service names that we configured user serviceorder servicepayment service Analyze traces and metrics using the Signoz dashboardIn the metrics tab you can see Application Metrics External Calls and Database Calls Application metrics Here we can see the application latency requests per second rps error percentage and the endpoints that were hit for a given service Track important application metrics like latency requests per second rps error percentage and top endpoints with SigNozExternal Calls Here you can see the metrics about the calls made to external services In our case we are running the services on localhost hence we see a single line Metrics like external call duration by address give a quick glimpse of the network connectivity with the external service This might be useful to detect a network issue Monitor external calls from a service that can help you with insights regarding network connectivityFor more features on metrics please read the documentation Identify latency issues with Flamegraphs and Gantt chartsYou can inspect each event in the spans table with Flamegraphs and Gantt charts to see a complete breakdown of the request Establishing a sequential flow of the user request along with info on time taken taken by each part of the request can help identify latency issues quickly Let s see how it works in the case of our sample Go app Go to the service name filter on the left and select order service Now select any span Flamegraphs and Gantt charts on SigNoz dashboard can be used to see complete breakdown of user requests as it propagates across servicesHere expanding on insert order you will see the time utilised in various SQL DB calls Gantt charts can give you detailed information on things like Db callsAlso note that we also have additional information about the query that was run in the tags panel on the right ConclusionDistributed tracing is a powerful and critical toolkit for developers creating applications based on microservices architecture For Golang applications using microservices architecture distributed tracing can enable a central overview of how requests are performing across microservices This lets application owners reconstruct the whole path of the request and see how individual components performed as part of the entire user request OpenTelemetry and SigNoz provide a great open source solution to implement distributed tracing for your applications You can try out SigNoz by visiting its GitHub repo If you have any questions or need any help in setting things up join our slack community and ping us in  support channelIf you want to know more about distributed tracing or SigNoz feel free to follow these links SigNoz an open source alternative to DataDogGuide on Distributed Tracing	2022-06-20 11:31:02
Apple	AppleInsider - Frontpage News	Apple's TikTok filter lets you recreate Harry Styles' AirPods spot	https://appleinsider.com/articles/22/06/20/apples-tiktok-filter-lets-you-recreate-harry-styles-airpods-spot?utm_medium=rss	Apple x s TikTok filter lets you recreate Harry Styles x AirPods spotApple is giving TikTok users the chance to recreate the AirPods and Apple Music with Spatial Audio ad starring musician Harry Styles via a new silhouette effect Initially revealed via promoted posts on TikTok users of the video based app can create a short clip of them dancing to the Harry Styles track Music For a Sushi Restaurant Like many other videos that feature on the app it s all conducted through a new camera effect When applied the effect changes the background to a solid color and overlays a different color over the user reminiscent of older famous spots for the iPod As colors and the background change users may also be able to spot AirPods digitally placed in their ears Read more	2022-06-20 11:58:34
Apple	AppleInsider - Frontpage News	Apple reportedly evaluating BOE OLED display samples for iPhone 14	https://appleinsider.com/articles/22/06/20/apple-reportedly-evaluating-boe-oled-display-samples-for-iphone-14?utm_medium=rss	Apple reportedly evaluating BOE OLED display samples for iPhone After reportedly losing millions of iPhone OLED screen orders because of an unauthorized manufacturing change BOE is said to be presenting new samples to Apple First BOE was reported to be having production problems in February then it was revealed that it had all but ceased manufacture That was ultimately said to have been because Apple caught BOE changing the design of the screen Specifically BOE was said to have expanded the circuit width of the thin film transistor used in the panels for its iPhone orders It s not clear why this was done without Apple s knowledge but being found to have changed the design appeared to mean BOE would lose millions of orders Read more	2022-06-20 11:23:17
Apple	AppleInsider - Frontpage News	Ericsson brings 5G patent infringement battle to the UK	https://appleinsider.com/articles/22/06/20/ericsson-brings-5g-patent-infringement-battle-to-the-uk?utm_medium=rss	Ericsson brings G patent infringement battle to the UKEricsson is extending its legal battle with Apple over G patents with new filings indicating the patent infringement fight will also be taking place in the United Kingdom In early Ericsson and Apple scaled up their disagreements over G patents that Ericsson believes Apple infringed with the iPhone and other products In the latest development in the affair Ericsson is taking the war to the U K Ericsson represented by law firm Taylor Wessing filed with the High Court of Justice for England and Wales on June over patents as spotted by FOSS Patents It is split into two cases with HP listing Apple Retail UK as its defendant and case HP including Apple Retail UK Apple Distribution International and Apple Inc Read more	2022-06-20 11:56:58
海外TECH	Engadget	The Morning After: Google uses Drake’s ‘Texts Go Green’ to explain RCS to Apple	https://www.engadget.com/the-morning-after-google-drake-texts-go-green-rcs-apple-111559996.html?src=rss	The Morning After Google uses Drake s Texts Go Green to explain RCS to AppleGoogle has been trying to nudge Apple into adopting the GSMA s RCS messaging protocol from not so subtle jabs at I O to lengthy Twitter threads from the head of Android The latest tool from the makers of Android Drake lyrics The official Android Twitter account shared an “unofficial lyric explainer video for “Texts Go Green the third song from Drake s latest album Both the title and chorus refer to what happens when an iPhone user blocks someone from contacting them through iMessage which defaults messages to SMS and loses features like read receipts Swiftly demolishing any cultural cachet by referencing lyrics from a recent Drake song the Twitter account calls it “a real banger And I close my Twitter app ーMat Smith nbsp The biggest stories you might have missed nbsp Hitting the Books What life on the internet was like at bits per secondThe original Pokémon Snap comes to Switch Online on June thSomeone made a tombstone to mark Internet Explorer s end of support dateLeaked Amazon memo says the company may run out of available labor by Balenciaga looks even worse on Mark Zuckerberg s avatarMeta is launching an Avatars Store for digital fashion Meta is opening an Avatars Store where you can purchase outfits for your avatar on Facebook Instagram and Messenger The new looks include designer duds from Balenciaga Prada and Thom Browne and the company expects to add more designers over time Zuckerberg and Eva Chen Meta s VP of fashion partnerships announced the new store on Instagram Live calling it the “first live avatar fashion show The “fashion show consisted of Chen holding up paper drawings of Zuckerberg s avatar wearing increasingly questionable if metaverse ready outfits Continue reading Senators call for a common charger standard in the USEurope wouldn t be alone in trying to cut e waste US senators Ed Markey Elizabeth Warren and Bernie Sanders have sent a letter to Commerce Secretary Gina Raimondo calling on her department to develop a comprehensive strategy that would lead to a common charging standard The EU acted in the public interest by settling on one port the senators said and the US ought to follow suit to reduce the environmental impact of chargers while improving convenience for users A charger standard would theoretically reduce e waste by letting people reuse existing cables and adapters for new devices Continue reading Diablo Immortal has reportedly earned million since releaseFree to play license to print cash Two weeks after release Blizzard s Diablo Immortal has earned approximately million according to Appmagic The analytics firm said the free to play game had already been downloaded almost million times Will this inform the rest of the Diablo gaming universe Possibly not Diablo franchise general manager Rod Fergusson recently said Diablo IV would feature a different monetization system from Immortal Continue reading The Engadget guide to the best mid range smartphonesWho says greatness has to be expensive EngadgetThe middle of the smartphone road has amazing options that balance price and features These days you still get incredible cameras vivid screens and decent battery life But there are so many so where do you start How about this guide Continue reading	2022-06-20 11:15:59
医療系	医療介護 CBnews	健保組合の調剤医療費3.9％減、20年度-処方せん受付回数15.3％減	https://www.cbnews.jp/news/entry/20220620200812	健保組合	2022-06-20 20:35:00
ニュース	@日本経済新聞 電子版	AIアナが読むニュース　夕方の4本 https://t.co/vGOkK9vhQE	https://twitter.com/nikkei/statuses/1538848319501664256	夕方	2022-06-20 11:36:44
ニュース	@日本経済新聞 電子版	欧米政権に物価高の逆風　マクロン与党、過半数割れ https://t.co/afIoEEoKyS	https://twitter.com/nikkei/statuses/1538848318402744321	過半数割れ	2022-06-20 11:36:44
ニュース	@日本経済新聞 電子版	22年度の年金0.4%減　過去の賃金減反映、足元は物価高 https://t.co/vlHF8BhV9D	https://twitter.com/nikkei/statuses/1538847299224281088	過去	2022-06-20 11:32:41
ニュース	@日本経済新聞 電子版	同性婚を認めていない民法などの規定は「合憲」と大阪地裁判決。3組の同性カップルによる国への賠償請求を退けました。同種訴訟で2021年3月の札幌地裁判決は違憲だとしており、司法判断が分かれています。 https://t.co/jYPN93ZA14	https://twitter.com/nikkei/statuses/1538846648394297344	同性婚を認めていない民法などの規定は「合憲」と大阪地裁判決。	2022-06-20 11:30:06
ニュース	BBC News - Home	Rail strike: Travellers face 'misery' in biggest walkout in 30 years	https://www.bbc.co.uk/news/uk-61861040?at_medium=RSS&at_campaign=KARANGA	misery	2022-06-20 11:25:01
ニュース	BBC News - Home	Boris Johnson returns to No 10 after minor sinus operation	https://www.bbc.co.uk/news/uk-politics-61865032?at_medium=RSS&at_campaign=KARANGA	decisions	2022-06-20 11:41:21
ニュース	BBC News - Home	Primark finally goes online in new click-and-collect trial	https://www.bbc.co.uk/news/business-61863413?at_medium=RSS&at_campaign=KARANGA	trial	2022-06-20 11:06:08
ニュース	BBC News - Home	5,000 people hit by Heathrow flight cancellations	https://www.bbc.co.uk/news/business-61862788?at_medium=RSS&at_campaign=KARANGA	easyjet	2022-06-20 11:09:13
ニュース	BBC News - Home	Archie Battersbee: Family of boy ruled dead seeks appeal	https://www.bbc.co.uk/news/uk-england-essex-61862714?at_medium=RSS&at_campaign=KARANGA	appealthe	2022-06-20 11:11:36
ニュース	BBC News - Home	Prince William describes why he sold The Big Issue on London street	https://www.bbc.co.uk/news/uk-england-london-61864144?at_medium=RSS&at_campaign=KARANGA	homeless	2022-06-20 11:33:27
ニュース	BBC News - Home	Ungovernable? France takes stock after Macron loses majority	https://www.bbc.co.uk/news/world-europe-61863170?at_medium=RSS&at_campaign=KARANGA	majority	2022-06-20 11:35:20
ニュース	BBC News - Home	Australia v England: Eddie Jones names squad for three-Test series in July	https://www.bbc.co.uk/sport/rugby-union/61863940?at_medium=RSS&at_campaign=KARANGA	Australia v England Eddie Jones names squad for three Test series in JulyBilly Vunipola and Danny Care are named alongside eight uncapped players in England s squad for their three Test tour in Australia next month	2022-06-20 11:44:31
ニュース	BBC News - Home	Nayef Aguerd: West Ham complete £30m deal to sign Rennes defender	https://www.bbc.co.uk/sport/football/61867137?at_medium=RSS&at_campaign=KARANGA	rennes	2022-06-20 11:13:48
ニュース	BBC News - Home	Commonwealth Games 2022: Natalie Metcalf to captain England	https://www.bbc.co.uk/sport/netball/61859869?at_medium=RSS&at_campaign=KARANGA	birmingham	2022-06-20 11:46:57
ニュース	BBC News - Home	Rail strike: When is it and which trains are running?	https://www.bbc.co.uk/news/business-61634959?at_medium=RSS&at_campaign=KARANGA	railway	2022-06-20 11:15:59
ニュース	BBC News - Home	Train strike: How much are rail workers paid?	https://www.bbc.co.uk/news/61840077?at_medium=RSS&at_campaign=KARANGA	workers	2022-06-20 11:45:13
ニュース	BBC News - Home	How the strike will affect passengers in Wales	https://www.bbc.co.uk/news/uk-wales-61845212?at_medium=RSS&at_campaign=KARANGA	strike	2022-06-20 11:15:16
北海道	北海道新聞	国内で７８００人コロナ感染　１３人死亡	https://www.hokkaido-np.co.jp/article/695887/	新型コロナウイルス	2022-06-20 20:05:00
北海道	北海道新聞	京都・鞍馬寺で「大蛇」退治　豊作祈り、勇ましく青竹伐り	https://www.hokkaido-np.co.jp/article/695886/	五穀豊穣	2022-06-20 20:05:00
ニュース	Newsweek	【動画】青唐辛子にかぶりついた少年、案の定ひどく悶える	https://www.newsweekjapan.jp/stories/lifestyle/2022/06/post-98912.php	代わりにおすすめなのが、唐辛子の辛味成分「カプサイシン」を分解する「カゼイン」の含まれる牛乳だという。	2022-06-20 20:25:00
IT	週刊アスキー	夏アニメが早くもゲームに！『転生賢者の異世界ライフ～ゲームでも、世界最強になりました～』がG123にて本日6月20日より世界同時配信開始	https://weekly.ascii.jp/elem/000/004/095/4095293/	開始	2022-06-20 20:30:00
IT	週刊アスキー	7月4日から！カイロソフト、リゾート経営SLG『常夏プールパレス』などをSteam向けに配信決定	https://weekly.ascii.jp/elem/000/004/095/4095292/	pcsteam	2022-06-20 20:20:00
海外TECH	reddit	月曜日がいちばん飲みたい	https://www.reddit.com/r/newsokunomoral/comments/vgiyo4/月曜日がいちばん飲みたい/	ewsokunomorallinkcomments	2022-06-20 11:08:56