Dev Tyagi (@devptyagi01) header
Dev Tyagi (@devptyagi01) profile picture

Inventing @Temple | ex - Software Engineer at @zomato @AppSecure @Amazon @TartanHQ

Gurgaon, Delhi, Ghaziabad
Joined April 2017
Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)Photo by Dev Tyagi (@devptyagi01)
Last week, I faced an interesting problem at work. I received a critical warning from AWS regarding our PostgreSQL RDS cluster, it was approaching transaction ID wraparound, something that can cause a full database outage if not handled in time.⁣ ⁣ This was a good reminder of how important it is to understand the internals of the systems we rely on every day.⁣ ⁣ For those unfamiliar, PostgreSQL uses a 32-bit transaction counter (XID) that wraps around after ~2.1 billion transactions. If old rows aren’t vacuumed and frozen in time, PostgreSQL can no longer determine which rows are visible, forcing it to stop accepting new writes to prevent data corruption.⁣ ⁣ In our case, it turned out that autovacuum wasn’t keeping up due to high write throughput and a few misconfigured thresholds.⁣ ⁣ What helped:⁣ ⁣ 👉🏻 Identifying large tables with unvacuumed rows.⁣ 👉🏻 Manually running 𝖵𝖠𝖢𝖴𝖴𝖬.⁣ 👉🏻 Tuning autovacuum workers settings and vacuum cost limits.⁣ ⁣ It’s one of those things that often goes unnoticed until it becomes urgent. If you're running PostgreSQL on RDS (or self-managed), keep an eye on 𝖺𝗀𝖾(𝖽𝖺𝗍𝖿𝗋𝗈𝗓𝖾𝗇𝗑𝗂𝖽) and ensure autovacuum is running efficiently.⁣ ⁣ Invisible debt in infrastructure has a way of surfacing at the worst possible time. This one got our attention early, worth sharing in case it helps others avoid a painful surprise.
4
1
35
6,627
Temple is an ambitious project. The team is delusional enough to think we can build this. And we will. Here's what we are building. Join the ride.
A lot of you have pinged me to ask - why are you doing Temple? Why did you leave a ~$35b company you founded 18 years ago to chase a niche health wearable? This doesn’t sound rational. Why did I leave Eternal? What are we building at Temple? What’s our vision statement? What do we have in store for humanity? I am going to tell you in 4 hours from now (drafting the note as we speak). Stay tuned. PS – holier-than-thou Indian doctors can skip this lol.
538
348
319
2,972
1,196,223
A lot of you have pinged me to ask - why are you doing Temple? Why did you leave a ~$35b company you founded 18 years ago to chase a niche health wearable? This doesn’t sound rational. Why did I leave Eternal? What are we building at Temple? What’s our vision statement? What do we have in store for humanity? I am going to tell you in 4 hours from now (drafting the note as we speak). Stay tuned. PS – holier-than-thou Indian doctors can skip this lol.
338
333
123
3,191
568,535
Dev Tyagi retweeted
I’ve been using it myself, and I genuinely think it’s a game changer! 💪❤️ I’ve been working closely with Deepi and his team to figure out how we can get the most meaningful metrics, not just for me, but for athletes in general. And the more I use it, the more I believe in what they’re building. It’s honestly incredible how something so small can be so effective 💪❤️
The graph posted from Temple’s side, but it would be much better if an independent, trusted 3rd party could verify these claims ideally an athlete who regularly uses other brands as well. If it’s genuine, I’d expect raw and honest reviews not podcasters to promote it for money.
26
69
8
976
89,481
Dark.ai – from the house of Eternal. Coming soon.
246
177
118
3,590
393,189
For more than a decade, I tried to meditate but never could. With Temple, I could finally see my slow progress, even when my racing mind felt nothing. Entropy is a delightful metric that helps me live a fuller, calmer life. And it also pushes me to workout more, and in the right ways (more on that soon). Join the waitlist for Early Access at temple.com And follow @temple for more updates.
186
171
15
640
169,298
Over 300,000 people die of drowning each year. In order to protect society, it is now illegal to consume or possess water. Your government is also considering banning solid food, as it presents a needless choking hazard. You are not an adult. You are a baby. Eat the baby food.
2,860
10,226
1,080
72,209
2,606,724
Just crossed 100k applications for the 100 introductory Temple devices. To the 100 who get one: you're the founding cohort. We'll be grateful for what you teach us. To the rest: we're building as fast as we can without compromising what @temple needs to be. Follow @temple for updates.
71
32
6
278
40,293
Hello world. The first 100 Temples are ready to ship. We're now inviting athletes, scientists, founders, doctors, creators, and individuals who care deeply about their physical and cognitive health to be the founding users of Temple. Apply for early access at temple.com
260
155
50
1,728
296,648
Heart Rate is just one of the simpler things. Temple sees more. Follow @temple for more updates.
90
71
16
888
114,509
We're hiring 🚀
We're recruiting at @temple. At Temple, we are building the ultimate wearable for elite performance athletes. A device that measures what no other wearable in the world measures, with a level of precision that doesn't exist yet. To build it, we need people who are obsessive about both the craft and the category. Engineers who are also athletes. People who will wear what they build, and hate it until it's perfect. Roles we're hiring for: 🟠 Analog Systems Engineers, Electronics Design Engineers 🟠 Embedded Systems Engineers — low-level HW bring-up, embedded signal and image processing, embedded AI 🟠 Design and Validation Engineers — sensors, actuators, battery, antenna, optics 🟠 CMF Engineers, Adhesive Materials Engineers 🟠 Sensor Algorithms Engineers — estimation theory, sensor fusion 🟠 Deep Learning Engineers — ML model development for physiological metrics 🟠 Computational Neuroscientists 🟠 BCI Engineers — real-time EEG/EMG acquisition and processing 🟠 Neural Decoding Researchers — brain activity to semantic mapping 🟠 Computer Vision Engineers — facial microexpression, subvocal muscle detection 🟠 Neuroimaging ML Engineers — multimodal sensor fusion 🟠 Last but not the least, product managers who work through Figma without needing a designer to hold their hand Important – we are building for people who push their bodies to the edge. We want to be those people, not just serve them. So only people who take fitness seriously, and have body fat <16% (men) and 26% (women) should apply. If you're not there yet but will commit to getting there in three months, you can apply too; but you'll be on probation until you are. Write to [email protected] with your core skill as the subject line. Come find your tribe.
2
1
15
1,494
Another #Hiring post 🚨 We're also looking for Backend Engineering Interns at @temple. Skillset preferred (again, not limited to): Go, Python, Kafka. Please note that we're only looking for people who're okay with working on-site. Location: Gurgaon, India. Do reach out with your Resumes / Portfolios / GitHub profiles, or tag someone you might know who can be a good fit.
95
13
1
352
28,908
Update: Have received a lot of applications, going through all of them. Will take time.
#Hiring Post 🚨 We at @temple are looking for Frontend Engineering Interns. Someone with high agency - who enjoys complete ownership, and finds a fit in early-stage companies developing at a high pace. Skills preferred (but not limited to) - Typescript, React, Vue. Please reach out to me or tag someone you might know who would like to be a part of a new age health startup.
1
8
1,382
#Hiring Post 🚨 We at @temple are looking for Frontend Engineering Interns. Someone with high agency - who enjoys complete ownership, and finds a fit in early-stage companies developing at a high pace. Skills preferred (but not limited to) - Typescript, React, Vue. Please reach out to me or tag someone you might know who would like to be a part of a new age health startup.
156
19
2
599
56,154
I’ve received a lot of applications, Will review all later tonight.
2
6
2,317
Coming soon. Follow @temple for more updates.
649
203
245
5,008
1,857,992
The worst part about today's @Cloudflare outage was that the dashboard was inaccessible. There was no way we could go ahead and change the DNS records. And to make things worse, even our domain registrar’s site depended on Cloudflare… so changing nameservers wasn’t an option either.
1
1
17
1,756
I’m not sharing this as the CEO of Eternal, but as a fellow human, curious enough to follow a strange thread. A thread I can’t keep with myself any longer. It’s open-source, backed by science, and shared with you as part of our common quest for scientific progress on human longevity. Newton gave us a word for it. Einstein said it bends spacetime. I am saying gravity shortens lifespan.  Read on, and tell me what you think.
914
884
664
7,310
10,329,290
Stay tuned folks ✨
Once upon a time, people believed the Earth was flat. And then they didn’t. Then they believed the sun revolved around the Earth. Until they didn’t. Humanity has built rockets, sequenced genomes, and cloned cells. Yet, in all our brilliance, we may have missed something glaringly simple. At Continue, we’ve been chasing a crazy insight into why we age; a pattern that’s been hiding in plain sight for eternity. We’ve tried desperately to disprove it. We couldn’t. Two years later, clues from biology, physics, evolution, and medicine are all pointing in the same direction. In 48 hours, I’ll share what we’ve found and how one element of our environment may hold the key to slowing human aging. Stay tuned.
1
640