Hacker News: templaedhel

New comment by templaedhel in "Root Cause Analysis: PostgreSQL MultiXact member exhaustion incidents"

templaedhel — Fri, 06 Jun 2025 19:24:58 +0000

Hey I'm Cosmo, I wrote this post and lead eng @ Metronome. Happy to answer any questions here. It was a long week for us but I'm glad we got the option to learn and share this relatively novel failure mode.

Root Cause Analysis: PostgreSQL MultiXact Member Exhaustion

templaedhel — Wed, 21 May 2025 00:31:23 +0000

Article URL: https://metronome.com/blog/root-cause-analysis-postgresql-multixact-member-exhaustion-incidents-may-2025

Comments URL: https://news.ycombinator.com/item?id=44047253

Points: 5

# Comments: 0

Metronome used CLIP embeddings to programmatically upgrade our design system

templaedhel — Tue, 11 Feb 2025 21:11:09 +0000

Article URL: https://metronome.com/blog/how-metronome-used-clip-embeddings-to-programmatically-upgrade-our-design-system

Comments URL: https://news.ycombinator.com/item?id=43018404

Points: 5

# Comments: 0

Fly.io solves usage-based billing challenges with Metronome

templaedhel — Tue, 29 Oct 2024 15:51:19 +0000

Article URL: https://metronome.com/blog/how-fly-io-solves-usage-based-billing-challenges-with-metronome

Comments URL: https://news.ycombinator.com/item?id=41985410

Points: 31

# Comments: 3

Metronome delivers advanced usage-based billing with Responsive

templaedhel — Wed, 14 Aug 2024 15:58:15 +0000

Article URL: https://www.responsive.dev/customers/metronome

Comments URL: https://news.ycombinator.com/item?id=41247538

Points: 15

# Comments: 0

New comment by templaedhel in "Borgo is a statically typed language that compiles to Go"

templaedhel — Tue, 30 Apr 2024 16:14:38 +0000

They made a coffeescript for go

New comment by templaedhel in "United Airlines plans to board passengers with window seats first"

templaedhel — Thu, 19 Oct 2023 02:26:27 +0000

Well to be fair a lot of the boarding time is tied up in people struggling to get luggage into overhead bins, and then eventually fully running out of space and having to swim upstream after they put their bag behind them.

New comment by templaedhel in "Waymo shows off its futuristic “transportation as a service” vehicle"

templaedhel — Sat, 19 Nov 2022 18:12:19 +0000

The only photo with backwards facing seats in the article is labeled

“Check out this wild train interior on the Chinese version. It has a centrally located table and rear-facing front seats. Truly a "living room" layout.”

Which is describing a completely different vehicle.

An AWS account just for getting into other AWS accounts

templaedhel — Thu, 03 Nov 2022 00:32:12 +0000

Article URL: https://src-bin.com/an-aws-account-just-for-getting-into-other-aws-accounts/

Comments URL: https://news.ycombinator.com/item?id=33444995

Points: 107

# Comments: 103

New comment by templaedhel in "Absurd Trolley Problems"

templaedhel — Wed, 06 Jul 2022 04:25:35 +0000

This feels like a great introduction to the “Lizardman’s constant” (https://slatestarcodex.com/2013/04/12/noisy-poll-results-and...)

> Lizardman’s Constant is an idea proposed by Scott Alexander that each poll always has about 4% weird answers. In one poll, 4% of Americans said that reptilian people do control our world and, in another 4% answered ‘Yes’ to the question ‘Have you ever been decapitated?’

New comment by templaedhel in "Billing systems are a nightmare for engineers"

templaedhel — Wed, 18 May 2022 22:52:48 +0000

Great article and excited to see another solution tackling the complex problem of billing. I’m an founding engineer at https://metronome.com (building usage-based billing infrastructure) and definitely echo the sentiments shared here — building a billing system that can scale is no small feat and anyone who previously built billing in-house can attest to just how painful that is.

New comment by templaedhel in "API-diff: a tool for side-by-side evaluations of JSON APIs"

templaedhel — Fri, 18 Dec 2020 17:06:21 +0000

I’ve not used this tool before (am excited to in the future though because..) having done a lot of API diffing with text diff tools in the past, they break down very quickly on things like: JSON key order can be random, causing false positives. Some headers will always be different (any sort of timestamp based header for example) while others must not be different. URL query params can be in any order, etc.

I think if you do api diffing at any reasonably large scale you’ll find yourself immediately building tools to help cut the signal from the noise, and this is an exciting step in that direction.

New comment by templaedhel in "Tesla 5-1 Stock Split"

templaedhel — Tue, 11 Aug 2020 21:41:25 +0000

Matt Levine (as usual) has some good explanations for the value (or lack thereof) of stock splits, as well as some historical context, as seen via the lens of the recent Apple split: https://www.bloomberg.com/opinion/articles/2020-07-31/apple-... (Bloomberg has a pretty aggressive paywall, but usually a new incognito tab will bypass it).

"A company should be a thing, and people should be able to own a portion of its equity, and the portion that each person owned would be expressed as an arbitrarily precise percentage of the total...The “stock price” would be what we now call the “market cap”: The market would place a value of $X on the company as a whole, and if I wanted to buy another 0.01429% I would pay 0.01429% of $X....

The traditional, 19th-century answer to how many shares a company should have was that stocks should have a normal price, they should cost like $40 to $100...This was so standard that, when Charles Dow created a stock index in 1884, he just averaged the dollar stock prices of a bunch of stocks...because the stocks had normal prices.

There is an argument that high-priced stocks reduce liquidity because traders have less incentive to post quotes. It is good for a stock to trade at a bid/ask spread of a couple of “ticks,” the minimum price increment for trading. If a stock is worth $50 and trades at a bid/ask spread of $49.99/$50.01, a trader who posts a bid to buy at $49.99 will be able to buy from anyone who wants to sell immediately. If it’s worth $500 and trades at $499.90/$500.10, a trader who posts a bid to buy at $499.90 might lose out to a trader who bids $499.91. You can’t reliably earn a “normal” spread by trading the stock, so your incentive to provide liquidity is lower. Nasdaq published a paper arguing this point

At the time of Apple’s last split, in 2014, one popular explanation was that Apple was trying to get into the Dow Jones Industrial Average, which is still price-weighted and so still has an old-fashioned fondness for normal-priced stocks, but that worked and now it’s in the Dow so that’s no reason to split again"

New comment by templaedhel in "New pill can deliver insulin"

templaedhel — Fri, 08 Feb 2019 18:23:18 +0000

Can't speak to the claims in this comment around type 2 diabetes, but worth noting this article and pill is specifically for type 1 diabetes, which is in no way related to weight or metabolism, but rather an autoimmune disease.

Apple apologizes for FaceTime bug, says server fix coming next week

templaedhel — Fri, 01 Feb 2019 14:19:06 +0000

Article URL: https://www.macrumors.com/2019/02/01/apple-apologizes-facetime-bug/

Comments URL: https://news.ycombinator.com/item?id=19054224

Points: 2

# Comments: 0

Show HN: JsQR – Pure JavaScript QR code reader written in typescript

templaedhel — Thu, 22 Feb 2018 17:52:10 +0000

Article URL: https://github.com/cozmo/jsQR

Comments URL: https://news.ycombinator.com/item?id=16439561

Points: 8

# Comments: 0

New comment by templaedhel in "Ask HN: Where to start in making a React Native wrapper for an iOS/Android API?"

templaedhel — Sun, 17 Dec 2017 10:05:59 +0000

Read the docs - React Native in general has good docs and the native module guides are especially well done in my opinion.

IOS - https://facebook.github.io/react-native/docs/native-modules-...

Android - https://facebook.github.io/react-native/docs/native-modules-...

Introducing Level 5, Lyft's Self-Driving Team

templaedhel — Fri, 21 Jul 2017 19:59:34 +0000

Article URL: https://medium.com/@lvincent/introducing-level-5-and-our-self-driving-team-705ef8989f03?hn=1

Comments URL: https://news.ycombinator.com/item?id=14823404

Points: 1

# Comments: 0

New comment by templaedhel in "Climate Impact Goals"

templaedhel — Fri, 16 Jun 2017 01:36:05 +0000

Some cities (Paris off the top of my head) have "UberGreen" which is exactly this - You can elect to only take rides from hybrid or electric vehicles.

https://newsroom.uber.com/portugal/ubergreenen/

New comment by templaedhel in "Sugar-Breathing Glycopolymersomes for Regulating Glucose Level"

templaedhel — Thu, 01 Jun 2017 17:06:59 +0000

As a type 1 diabetic I can say (personally) the difficulties of managing my diabetes do not stem from taking insulin, that's a solved problem. Rather the difficulties come from taking the right amount at the right time. Insulin is slow acting (2-3 hours for it to fully take effect) so you're always trying to predict/aim for a moving target, and one that can shift rapidly depending on eating/exercise. If I could just set it and forget it, or even just have the ability to be 50% less accurate when calculating/planning dosage and activities, it would be a paradigm shift.