Dev Tyagi

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

[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.

[Deepinder Goyal @deepigoyal]

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.

[Deepinder Goyal @deepigoyal]

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.

[PV Sindhu @Pvsindhu1]

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 💪❤️

[Deepinder Goyal @deepigoyal]

https://t.co/EBCxtHEFZH – from the house of Eternal. Coming soon.

[Deepinder Goyal @deepigoyal]

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 https://t.co/4HI4EflMh7

And follow @temple for more updates.

[Telegram Messenger @telegram]

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.

[Deepinder Goyal @deepigoyal]

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.

[Deepinder Goyal @deepigoyal]

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 https://t.co/XxGR9Hpq58

[Deepinder Goyal @deepigoyal]

Heart Rate is just one of the simpler things. Temple sees more.

Follow @temple for more updates.

[Dev Tyagi @devptyagi01]

@arpit_bhayani https://t.co/OvLS92V8J8

Happening with everyone I think

[Dev Tyagi @devptyagi01]

@arpit_bhayani Yo! Congratulations and all the best 🚀✨

[Dev Tyagi @devptyagi01]

@amolik_vivian Waah shampy waah

[Dev Tyagi @devptyagi01]

We're hiring 🚀

[Deepinder Goyal @deepigoyal]

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.

[Dev Tyagi @devptyagi01]

@arpit_bhayani I learned about it the hard way - faced it in production and all writes had stopped 🫡

https://t.co/NM3px0j0qn

[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.

[Dev Tyagi @devptyagi01]

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.

[Dev Tyagi @devptyagi01]

Update: Have received a lot of applications, going through all of them. Will take time.

[Dev Tyagi @devptyagi01]

#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.

[Dev Tyagi @devptyagi01]

I’ve received a lot of applications, Will review all later tonight.

[Dev Tyagi @devptyagi01]

#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.