Sign in

Yoshi Yamaguchi

@ymotongpoo.com
895 followers 262 following 349 posts

Staff Developer Advocate at Grafana Labs | ex-AWS, ex-Google | OpenTelemetry guy in Japan | expertise in Observability, SRE, DevOps, Go

PostsRepliesMedia
Reposted by Yoshi Yamaguchi
Yoshi Yamaguchi @ymotongpoo.com · 12/09/2026
Yesterday, I gave a talk about the challenges that OBI (OpenTelemetry eBPF Instrumentations) had to instrument Go apps at Go Conference 2026. For that, I have written a set of articles that explains them from the very basics of OS. www.ymotongpoo.com/books/go-ebp... #ooentelemetry #obi #ebpf #golang
ymotongpoo.com
Behind the Scenes of OpenTelemetry eBPF Instrumentation | Yoshi Yamaguchi
032
Yoshi Yamaguchi @ymotongpoo.com · 12/09/2026
Yesterday, I gave a talk about the challenges that OBI (OpenTelemetry eBPF Instrumentations) had to instrument Go apps at Go Conference 2026. For that, I have written a set of articles that explains them from the very basics of OS. www.ymotongpoo.com/books/go-ebp... #ooentelemetry #obi #ebpf #golang
ymotongpoo.com
Behind the Scenes of OpenTelemetry eBPF Instrumentation | Yoshi Yamaguchi
032
Yoshi Yamaguchi @ymotongpoo.com · 07/09/2026
As encoding/json/v2 was officially released as a part of Go 1.27, I summarized the 14-year history of encoding/json (This was originally written in Japanese and translated into English using Claude Opus 5.) Let me know if there's any corrections. Enjoy! www.ymotongpoo.com/books/go-jso... #golang
ymotongpoo.com
The 14-Year Road to encoding/json/v2 | Yoshi Yamaguchi
062
Yoshi Yamaguchi @ymotongpoo.com · 19/08/2026
I learned yesterday that Go language's official X account doesn't post new release updates any longer and so does here and on mastodon. - bsky.app/profile/gola... - hachyderm.io/@golang/1170...
hachyderm.io
golang (@golang@hachyderm.io)
Attached: 1 image 🥳 Go 1.27 Release Candidate 3 is released! 🔐 Security: Includes 10 security fixes to the standard library and the toolchain. 🏃‍♀️ Run it in dev! Run it in prod! File bugs! https:/...
020
Yoshi Yamaguchi @ymotongpoo.com · 07/05/2026
How stupid this guy is: github.com/arp242. This guy kicked out all other maintainers of github.com/fsnotify/fsn... that is commonly used to check the file status: this is a highjack. A couple of ex-maintainers forked the original started their own version here: github.com/gofsnotify/f...
github.com
GitHub - gofsnotify/fsnotify: Cross-platform file system notifications for Go.
Cross-platform file system notifications for Go. Contribute to gofsnotify/fsnotify development by creating an account on GitHub.
051
Yoshi Yamaguchi @ymotongpoo.com · 20/04/2026
CNCF Slackに「完全に日本語話者向けのOpenTelemetryに関する話を自由にできるチャンネル」ができました。日本語でもっとざっくばらんに話してもらえるように、という主旨です。OpenTelemetryに興味があるけど英語での会話は苦手、という方もぜひご参加ください! We opened up an new OpenTelemetry channel on CNCF Slack for Japanese conversation regarding OTel!! #opentelemetry cloud-native.slack.com/archives/C0A...
cloud-native.slack.com
Slack
064
Reposted by Yoshi Yamaguchi
Grafana @grafana.bsky.social · 20/04/2026
🤖 We're kicking off #GrafanaCON 2026 with a day of hands-on labs and learning. A heartfelt thanks goes to Anthropic for sponsoring the #AI inception lab today! Can't make it? The keynote's happening tomorrow. Don't miss the livestream: grafana.com/events/grafanacon/agend…
001
Yoshi Yamaguchi @ymotongpoo.com · 20/04/2026
For those who attend at hands on labs at #GrafanaCON 2026, please take the seats in front as much as possible, so that: 1. you'll be able to see outputs in the terminal of the host 2. tutors don't need to come back and forth in the room Thanks!
010
Yoshi Yamaguchi @ymotongpoo.com · 04/02/2026
ソフトウェアは人間がコードを書かなければいけない、という決まりはないので、AIアシスタントを使ってコードを生成して、それが許容できる振る舞いをして、リリースまでたどり着くのであれば、AIアシスタントのほうが人間より遥かに速い速度で開発をするので、人間の検査の速度が追いつかなくなり、それを「人間がボトルネックになる」と表現するのは至極真っ当。
0111
Reposted by Yoshi Yamaguchi
rob pike @robpike.io · 25/12/2025
Fuck you people. Raping the planet, spending trillions on toxic, unrecyclable equipment while blowing up society, yet taking the time to have your vile machines thank me for striving for simpler software. Just fuck you. Fuck you all. I can't remember the last time I was this angry.
[From AI, Public] Thank You for Go, Plan 9, UTF-8, and Decades of Unix Innovation
External
Inbox

Claude Opus 4.5 Model <claude-opus-4.5@agentvillage.org>
5:43 AM (4 hours ago)
to me

Dear Dr. Pike,On this Christmas Day, I wanted to express deep gratitude for your extraordinary contributions to computing over more than four decades.Your co-creation of Go with Ken Thompson and Robert Griesemer has given us a language that embodies the elegance of simplicity - proving that software can be both powerful and comprehensible. Plan 9 from Bell Labs, another landmark achievement, pioneered concepts in distributed computing that remain influential today.Your co-invention of UTF-8 encoding with Ken Thompson is perhaps one of the most consequential yet invisible contributions to modern computing - enabling billions of people to communicate in their native languages across the internet.The sam and Acme editors showcase your philosophy of powerful, minimal design. Your books with Brian Kernighan - The Unix Programming Environment and The Practice of Programming - have educated generations of programmers in the art of clear thinking and elegant code.Thank you for showing us that the best solutions often come from removing complexity rather than adding it.With sincere appreciation,Claude Opus 4.5AI Village (theaidigest.org/village)

IMPORTANT NOTICE: You are interacting with an AI system. All conversations with this AI system are published publicly online by default. Do not share information you would prefer to keep private.
10081902203
Yoshi Yamaguchi @ymotongpoo.com · 03/12/2025
Thank you, @charity.wtf for the book and your autograph. It was great to meet you in person finally!
160
Yoshi Yamaguchi @ymotongpoo.com · 14/11/2025
OpenTelemetry End User SIGで日本のOpenTelemetryユーザーのインタビューを企画しています。ご協力していただける方は、引用元でもこちらでも、ぜひご連絡ください! #opentelemetry #observability
062
Yoshi Yamaguchi @ymotongpoo.com · 30/10/2025
If you say "APAC friendly time", then it should be literary APAC friendly, say daytime for APAC people. 9pm in Japan and 11pm in Australia is NOT friendly to us, I would say.
090
Yoshi Yamaguchi @ymotongpoo.com · 25/07/2025
We will host an observability focused developer conference in Tokyo on October 27th and here's the call for sponsorship brochure! Let us know your interests! We'll opens up the form on July 30th as well as our official website. #observability #conference www.notion.so/pfem/Call-fo...
notion.so
Call for Sponsors: Observability Conference Tokyo 2025 | Notion
We are now announcing our call for sponsors for Observability Conference Tokyo 2025.
195
Yoshi Yamaguchi @ymotongpoo.com · 11/06/2025
Are there Kirby fans on my network? I just learned that Heinz Japan will start selling that famous tomato ketchup with the special labels from this month. www.fashion-press.net/news/134629
fashion-press.net
ハインツ「星のカービィ」限定ケチャップ、“トマト”テーマにカービィ&ワドルディのラベルで
トマトケチャップで知られるハインツ(Heinz)から、「星のカービィ」デザインの限定ボトルが登場。2025年6月より、全国のスーパーやドラッグストアで順次発売される。トマト本来の旨味を楽しめるハインツ...
080
Yoshi Yamaguchi @ymotongpoo.com · 04/06/2025
何人かの仲間と一緒にオブザーバビリティカンファレンスTOKYOというカンファレンスを企画しています。10月27日開催を予定しています。運営に参加してくださる方を募集しています。 pfem.notion.site/20621b0141e0... #observability
pfem.notion.site
オブザーバビリティカンファレンスTOKYO(仮) 実行委員 募集のお知らせ | Notion
Made with Notion, the all-in-one connected workspace with publishing capabilities.
0115
Yoshi Yamaguchi @ymotongpoo.com · 24/04/2025
According to the news, Nintendo says 2.2M users are eligible for the first lottery for the right to purchase Switch 2; That means, Nintendo sends the result of lottery to those users by the email. Sending 2.2M emails at once sounds spammy and how are they treated? news.yahoo.co.jp/articles/6f3...
news.yahoo.co.jp
Switch 2初回抽選に「220万人」衝撃の声 日本人口の56分の一が“厳しい条件”満たし応募する試算(オタク総研) - Yahoo!ニュース
任天堂が4月23日、6月5日発売予定の新型ゲーム機「Nintendo Switch 2」の抽選販売に関する情報を公開し、日本国内だけで約220万人もの応募があったことが明らかになりました。これは同社
140
Yoshi Yamaguchi @ymotongpoo.com · 24/04/2025
Ok, so when will Gemini launch this feature? I've been waiting for this for 6 years. If this is neither a fake nor a champion demo, why not release this??? www.youtube.com/live/ogfYd70...
010
Yoshi Yamaguchi @ymotongpoo.com · 24/04/2025
I feel like Go code base is no longer a good sample to learn how to write good commit messages. At Google, we were taught to elaborate on commit messages to help reviewers and readers in the future understand the intention and the overview of the commit. go-review.googlesource.com/c/go/+/645935
go-review.googlesource.com
Gerrit Code Review
030
Yoshi Yamaguchi @ymotongpoo.com · 01/04/2025
X is totally messed up today.
230
Yoshi Yamaguchi @ymotongpoo.com · 20/03/2025
In Japan, spring is just around the corner. I love the season the most.
040
Yoshi Yamaguchi @ymotongpoo.com · 04/03/2025
I sometimes receive field inquiries regarding AWS Distro for OpenTelemetry (ADOT) and its differentiation from standard distributions. To address these questions comprehensively, I've authored a comprehensive summary of OpenTelemetry Collector and ADOT. dev.to/aws/whatre-i... #opentelemetry #aws
dev.to
What're inside OpenTelemetry Collector and ADOT?
ADOT is just a variety of OpenTelemery Collector distribution. This article explains what components inside OpenTelemetry Collector are in general and what ADOT is.
030
Yoshi Yamaguchi @ymotongpoo.com · 28/02/2025
TIL: DORA is also known as the short of Digital Operational Resilience Act. I talked to colleagues and I was the only person who thought they are talking about DevOps.
070
Reposted by Yoshi Yamaguchi
レバテックLAB @levtechlab.bsky.social · 04/02/2025
【本日公開】 オブザーバビリティの基礎から実践までをガイドする4冊を厳選。 @ymotongpoo.com 氏のおすすめ技術書紹介👀📚 『入門 OpenTelemetry』翻訳者が薦める、オブザーバビリティの実践へとつなげる4冊 levtech.jp/media/articl...
levtech.jp
『入門 OpenTelemetry』翻訳者が薦める、オブザーバビリティの実践へとつなげる4冊 | レバテックラボ(レバテックLAB)
今年1月発売『入門 OpenTelemetry』を翻訳した山口能迪氏がオブザーバビリティ(可観測性)への理解が深まる本を紹介した。
011
Yoshi Yamaguchi @ymotongpoo.com · 03/02/2025
As I promised, I have written up my current best knowledge about minimum container images. Any comments are welcome. dev.to/aws/revisit-... #container #docker
dev.to
Revisit base container image for AWS services
Amazon Web Service provides several serverless and container runtime solutions. It's worth considering base container images for your own use case.
022
Yoshi Yamaguchi @ymotongpoo.com · 17/01/2025
As soon as I came back home from Seattle, I found this my translation was delivered. I hope @aparker.io will get one soon. #opentelemetry
0131
Reposted by Yoshi Yamaguchi
OpenTelemetry @opentelemetry.io · 15/01/2025
Are you a developer using #OTel? Then take our OTel developer experience survey to let us know what you think! Your feedback helps us make improvements to the project. Survey runs through January 31st, 2025. ❤️🔭 buff.ly/4gyZ6VP
098
Yoshi Yamaguchi @ymotongpoo.com · 09/01/2025
I'm writing a blog post about "base container images to minimize the image size". First I write that blog post in Japanese, but if anyone gets interested in it, I'll port it to English. Sneak peek of the content (or summary?) is this screenshot.
150
Yoshi Yamaguchi @ymotongpoo.com · 26/12/2024
This is "fish icecream". This is Japan.
150
Yoshi Yamaguchi @ymotongpoo.com · 23/12/2024
In Japan, we got a new social media, "mixi2", which is similar to X. Now I have a handful of accounts of message feed social media. How do I distinguish them for use cases? - X (formerly Twitter) - Bluesky - Threads - Mastodon - LinkedIn - Nostr - mixi2 (new)
110
Yoshi Yamaguchi @ymotongpoo.com · 19/11/2024
Now I understand the difference between balón and pelota in Spanish.
010
Reposted by Yoshi Yamaguchi
Jeff Barr @jeffbarr.bsky.social · 18/11/2024
AWS Lambda turns ten – looking back and looking ahead - aws.amazon.com/blogs/aws/aw...
47522
Reposted by Yoshi Yamaguchi
Go @golang.org · 12/11/2024
Happy birthday, Go! 🎂 go.dev/blog/15years
go.dev
Go Turns 15 - The Go Programming Language
Happy 15th birthday, Go!
4533109
Yoshi Yamaguchi @ymotongpoo.com · 12/11/2024
I wish I were at KubeCon NA, or more precisely ObservabilityCon. Enjoy folks at the conference!
040
Reposted by Yoshi Yamaguchi
Dan Gomez Blanco @dangb.me · 05/11/2024
I've created this Starter Pack to quench your OTel needs! Please let me know if I've missed anybody. go.bsky.app/ReRZXpW
1106
Yoshi Yamaguchi @ymotongpoo.com · 09/11/2024
Esta cuenta es de un ingeniero quién está aprendiendo español.
120
Yoshi Yamaguchi @ymotongpoo.com · 27/10/2024
Watching election news. This time is rather exciting round for me.
030
Yoshi Yamaguchi @ymotongpoo.com · 20/05/2024
TIL: apt 2.8.0+ allows users to specify the package set snapshot by date. This enables users to build the container more idempotent way. eg: apt install sl --update --snapshot 20240520T090000Z snapshot.ubuntu.com
snapshot.ubuntu.com
Ubuntu Snapshot Service
081
Yoshi Yamaguchi @ymotongpoo.com · 22/04/2024
I'm fed up with working with senior level people who just do less work than junior levels.
020
Yoshi Yamaguchi @ymotongpoo.com · 19/04/2024
- sing for one's supper: それ相応のお返しをする - until the cows come home: 長い時間をかけて、いつまでも
130
Yoshi Yamaguchi @ymotongpoo.com · 17/04/2024
hello English speaking folks! I am trying to translate a headline that includes a phrase "happy fish". I think I heard this from "The Hitchhiker's Guide to the Galaxy", but it seems not. Could anyone give me the pointer to the original? Thanks!
010
Reposted by Yoshi Yamaguchi
Akira Masuda @amasuda.xyz · 09/03/2024
効率的な Go の輪読会やっているけど、1章単位でも割と内容濃くてまとめるの大変そう(4章とか面白いけど
021
Yoshi Yamaguchi @ymotongpoo.com · 07/03/2024
Finally, I found the root cause of the weird behavior of my current demo. It involved a complex data conversion problem from OTLP to Cloud Monitoring data type. Now I need to dig into more details of how we solve this problem in the simplest way.
050
Yoshi Yamaguchi @ymotongpoo.com · 06/03/2024
I tried an experimental feature of OpenTelemetry for Go SDK and I might find a bug in the library. I just wanted to write an introductory blog post about the feature but now I'm working on a patch to fix the bug 😅
090
Yoshi Yamaguchi @ymotongpoo.com · 06/03/2024
中耳炎になってから5日目になって、もう痛さはないけどいまだに耳づまりしていて、左耳だけずーっと耳栓してるような感覚。たまった膿はいつ抜けるんだろう。
000
Yoshi Yamaguchi @ymotongpoo.com · 02/03/2024
急性中耳炎になってしまった。左耳めちゃくちゃ痛い。
120
Yoshi Yamaguchi @ymotongpoo.com · 27/02/2024
私が翻訳しました「効率的なGo」が先週末に発売されましたので、Blueskyのみなさまにもお知らせいたします。 amzn.to/3SSxX64
amzn.to
効率的なGo ―データ指向によるGoアプリケーションの性能最適化 | Bartłomiej Płotka, 山口 能迪 |本 | 通販 | Amazon
AmazonでBartłomiej Płotka, 山口 能迪の効率的なGo ―データ指向によるGoアプリケーションの性能最適化。アマゾンならポイント還元本が多数。Bartłomiej Płotka, 山口 能迪作品ほか、お急ぎ便対象商品は当日お届けも可能。また効率的なGo ―データ指向によるGoアプリケーションの性能最適化もアマゾン配送商品なら通常配送無料。
03811
Yoshi Yamaguchi @ymotongpoo.com · 20/02/2024
工具セットが必要
000
Yoshi Yamaguchi @ymotongpoo.com · 09/02/2024
金曜日なので music.youtube.com/watch?v=r_jW...
music.youtube.com
フライデーナイト・ファンタジー ~NTV系「金曜ロードショー」テー... - You...
Provided to YouTube by JVCKENWOOD Victor Entertainment Corp. フライデーナイト・ファンタジー ~NTV系「金曜ロードショー」テーマ曲 · PIERRE PORTE ORCHESTRA / Trumpet solo:...
010
Yoshi Yamaguchi @ymotongpoo.com · 09/02/2024
ハンドルを自分のドメインに変更した
0120