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mtsuka
@mtsuka.bsky.social
ex-Mercari, inc. ex-Yahoo! JAPAN. I love Technology that empowers people.
まとぺさん元気そうでよかった
March 28, 2025 at 6:00 AM
すぎゃーんさんがクライアント書いてるし、ご縁と思ってウロウロしてみるよ
March 28, 2025 at 5:57 AM
engineering.mercari.com/en/blog/entr...
Tired of endless Kubernetes optimization? Why not relieve your fatigue with cute little tortoises.
@sanposhiho
explains why Mercari gave up on manual Kubernetes resource optimization, and how the new tool "Tortoise" was introduced.
Tortoise: Outpacing the Optimization Challenges in Kubernetes at Mercari
I’m Kensei Nakada (@sanposhiho), an engineer of the Platform team at Mercari. I’m working on autoscaling/optimizing Kube
engineering.mercari.com
February 16, 2024 at 2:10 AM
I believe having a mentorship matters. Because in the context of high-grade promotion, group-wide or company-wide visibility (contribution) matters. For instance, if you have a mentor in the other division or company, they could be one of the supporters/recommenders when they get promoted.
November 29, 2023 at 3:27 AM
The 29th Volume of the Thoughtworks Technology Radar has been released.
www.thoughtworks.com/radar
I would say that we can refer to it to some extent, but we shouldn't justify the trend based on that.
I believe we can also get the most out of this by analyzing historical transitions.
Technology Radar | An opinionated guide to today's technology landscape | Thoughtworks
The Technology Radar is an opinionated guide to today's technology landscape. Read the latest here.
www.thoughtworks.com
September 29, 2023 at 3:13 AM
https://news.ycombinator.com/item?id=36942651
This project started just about a year ago. At that time, there were no T2D nodes in the Japan region. So, first of all, we had to start negotiating with GCP. (I was concurrently working as an Engineering Manager of Platform Infra.)
August 1, 2023 at 5:18 AM
[
Sometimes we would consider these returned surveys a form of popularity indicator for the event. We learned that was often a mistake too – how many people respond often has no correlation to the quality – for better or worse – of the event.
]

I would like to share this point.
Surveys, Survey Fatigue and getting Feedback
AbstractGetting feedback can be difficult in a business environment and a survey seems like a good way to do this, but y
engineering.mercari.com
July 26, 2023 at 2:36 AM
To make sure the bug appears, probably only 1 in 1000 boots, this guy tried booting Linux 292,612 times.
I booted Linux 292,612 times
And it only took 21 hours. Linux 6.4 has a bug where it hangs on boot, but probably only 1 in 1000 boots (and rarer if using Intel hardware for some reason). It's surprising to me that no one has noti...
rwmj.wordpress.com
June 20, 2023 at 2:51 AM
I know this kind of method. However, for the other brand, the failure of the mainboard could be the worst scenario.
Security Researchers Discover BIOS Password Bypass On Lenovo Laptops
A security researcher out of New Zealand found it was possible to use a screwdriver to reset the BIOS password for a Lenovo laptop.
hothardware.com
June 19, 2023 at 6:23 AM
I'm curious about the SPACE concept. I'm looking for the opportunity to enable that. But at that time, in my view, it's still not enough to convince salespeople in Japan.
DevEx: What Actually Drives Productivity - ACM Queue
queue.acm.org
June 12, 2023 at 2:57 AM
It depends on the skill/knowledge level.
June 9, 2023 at 2:36 AM