Hacker News: dmlittle

New comment by dmlittle in "K8s with 1M nodes"

dmlittle — Sun, 19 Oct 2025 07:19:54 +0000

It's been a while since I've checked this but a few years ago we tried to limit test kine on a large-ish cluster and it performed pretty poorly. It's fine for small clusters but the way they have to implement the watch semantics makes it perform poorly (at least this was the case a few years ago).

New comment by dmlittle in "K8s with 1M nodes"

dmlittle — Sun, 19 Oct 2025 07:11:01 +0000

The node failure rate is much higher than that. On a 1M node cluster of cloud-managed instances (AWS, GCP, Azure, etc.) you'd likely see failures a few times a month, if not more.

New comment by dmlittle in "DaisyUI: Tailwind CSS Components"

dmlittle — Tue, 22 Jul 2025 15:35:29 +0000

It depends on how much effort you put into it vs. just using any of the base templates/components that Tailwind Plus (previously Tailwind UI) has to offer.

If you look at their Showcase section[1], you can't tell it's using TailwindCSS for most of them (imo).

[1] https://tailwindcss.com/showcase

New comment by dmlittle in "Ask HN: Bitcoin mining as an alternative to ad revenue"

dmlittle — Sun, 27 Apr 2025 16:55:00 +0000

Jeremy Rubin built a proof-of-concept for this over a decade ago for a hackathon and ended up being sued by the state of New Jersey. This blog post[0] has a good summary of the events.

[0] https://ethanzuckerman.com/2015/05/28/the-death-of-tidbit-an...

New comment by dmlittle in "SpaceX's Fram2 returns from first-of-its-kind mission around Earth's poles"

dmlittle — Fri, 04 Apr 2025 19:42:59 +0000

Just an (uneducated) guess here, I don't believe capsules carry the necessary amount of fuel that it would take to accomplish this.

New comment by dmlittle in "Every UUID Dot Com"

dmlittle — Fri, 06 Dec 2024 23:22:40 +0000

It depend on the UUID version you're using. Version 4 (Random) will always have that value be 4 as per RFC 9562. So 99999999-9999-9999-9999-999999999999 is a valid UUID but not a valid UUID v4. If you wanted to be pedantic the website should have been named https://everyuuidv4.com/

https://datatracker.ietf.org/doc/html/rfc9562

New comment by dmlittle in "How Uber tests payments in production"

dmlittle — Thu, 08 Aug 2024 03:01:30 +0000

> C) Only one staging env per customer. Want to check what a new setting will do? Every developer is getting that setting turned on.

Stripe Sandboxes[1] aim to solve this problem!

(Disclaimer: I work for Stripe but not on this feature)

[1] https://docs.stripe.com/sandboxes

New comment by dmlittle in "Starlark Language"

dmlittle — Mon, 17 Jun 2024 03:09:57 +0000

There's some explicit differences with Python[1]. My understanding is that Starlark was specifically created for Bazel so if I had to guess it's to enforce the immutability of values between contexts.

[1] https://bazel.build/rules/language#differences_with_python

New comment by dmlittle in "Free MIT Course: Performance Engineering of Software Systems"

dmlittle — Wed, 10 Jan 2024 20:49:59 +0000

Thank you for TA'ing the class! I took it in 2015 and TAs really made the class for myself and most of my friends.

Is the end of semester Leisserchess competition still going? I believe I heard that the year you TA'd it (might have been a year before or after) a group finally compiled an opening playbook and beat everyone in the class

New comment by dmlittle in "Dive: A tool for exploring a Docker image, layer contents and more"

dmlittle — Mon, 08 Jan 2024 22:23:09 +0000

I believe the original Kubernetes proof of concept was written in Java

New comment by dmlittle in "Ask HN: Heroku alternatives in 2023 without Pay-as-you-go scheme"

dmlittle — Fri, 18 Aug 2023 18:32:17 +0000

fly.io is another popular one

New comment by dmlittle in "System Initiative: Second Wave DevOps"

dmlittle — Wed, 21 Jun 2023 19:31:26 +0000

How do you go from "25,000 requests per second" (25krps) to "one request every 3 seconds"?

New comment by dmlittle in "Show HN: I was frustrated with pricing of PagerDuty et al., so made one myself"

dmlittle — Sun, 23 Apr 2023 18:18:15 +0000

It might be plan dependent(?) but everything you’re describing is configurable on your PagerDuty profile. I have it configured to send me a notification immediately followed by a call if I don’t acknowledge it within a minute (yes, this is aggressive but I’m in a high urgency, quick response time SLA rotation)

New comment by dmlittle in "FDIC – SVB FAQ"

dmlittle — Sun, 12 Mar 2023 03:58:07 +0000

Right. I meant to say there are groups capitalizing on the situation

New comment by dmlittle in "FDIC – SVB FAQ"

dmlittle — Sun, 12 Mar 2023 03:40:58 +0000

> Shocked that no VC or group of them haven't stood up a short term bridge loan facility since it was them who triggered the chain reaction that took the bank down.

Several groups are. They're offering anywhere between 60 to 80 cents on the dollar for the uninsured amounts. https://www.reuters.com/business/finance/hedge-funds-offerin...

New comment by dmlittle in "KWOK: Kubernetes WithOut Kubelet"

dmlittle — Wed, 01 Mar 2023 05:00:01 +0000

(Disclaimer: I haven't looked too much into this tool other than a cursory glance)

It seems this tool isn't meant mostly for testing how different components behave under different scenarios and/or load. This is probably particularly helpful for custom controllers or operators. What happens to your controller if it's constantly reconciling 100k pods? What about 5k nodes? Something else? If this tool makes creating a "loaded" cluster easy, it's definitely handy. Would have saved me some time doing something similar a few months ago.

New comment by dmlittle in "Ask HN: What is tech debt to you?"

dmlittle — Sat, 19 Nov 2022 19:14:10 +0000

For what it’s worth sometimes it’s worth abandoning old legacy context in a rewrite if the new solution drastically reduces operational complexity. For example, it’s cheaper/better to retrain everyone on the new solution than it is to continue to onboard new folks to the legacy one. This is not always the case, but sometime it is as the parent comment mentions.

New comment by dmlittle in "GraphQL is a hot smoking pile of garbage"

dmlittle — Sun, 28 Aug 2022 02:15:09 +0000

> GraphQL forces you to write business logic on the client

Even if you have traditional REST endpoints, you still have to potentially orchestrate their usage client-side.

New comment by dmlittle in "Scaling Kubernetes to Thousands of CRDs"

dmlittle — Tue, 16 Aug 2022 01:06:07 +0000

Depending on the size of your cluster, scaling out the apiservers is not necessarily cheap as the watch caches need to be initialized which puts load on etcd. Generally speaking, it's probably better to scale the apiservers vertically rather than horizontally.

New comment by dmlittle in "Ask HN: Why hasn't Mark Zuckerberg banned Apple products?"

dmlittle — Sat, 13 Aug 2022 21:11:24 +0000

Adobe removing support for their products in Apple products would have just created a void that someone else would have filled.