Hacker News: keithluu

New comment by keithluu in "Astral to Join OpenAI"

keithluu — Thu, 19 Mar 2026 15:14:25 +0000

Why do I feel uneasy about this?

New comment by keithluu in "Marketing for Founders"

keithluu — Sun, 15 Mar 2026 07:07:51 +0000

Decent guide/list but it feels as if its for founders who love to build first and leave everything else as an afterthought. Like, the first section is Places To Launch Your Startup.

New comment by keithluu in "We might all be AI engineers now"

keithluu — Sat, 07 Mar 2026 03:10:04 +0000

I understand your concern. The copycat problem is real.

But if you come from a technical background and this is your first time building a product, you'll soon learn that it is so damn hard to get users, especially *paying* ones.

I was there. I built something, shared it, prayed people would notice. The truth is most of the time your product fails. Better explore the problem you are trying to solve first, share your idea if necessary, and collect feedback. You'll have a much clearer picture of what you need to do from there.

New comment by keithluu in "When does MCP make sense vs CLI?"

keithluu — Mon, 02 Mar 2026 04:15:22 +0000

Unrelated, but as a non native English speaker it's funny to me that you use MCPs (plural) to refer to MCP tools.

New comment by keithluu in "I verified my LinkedIn identity. Here's what I handed over"

keithluu — Sat, 21 Feb 2026 16:07:05 +0000

I believe OpenAI used Persona during the verification step that you must complete to use their SOTA models in the API. Not sure if it's still the case now.

Anyway, I found that too much of a hassle and switched to other LLM providers.

New comment by keithluu in "All Look Same?"

keithluu — Thu, 19 Feb 2026 08:15:41 +0000

Right? I was thinking how come it takes such a simple site to load. Then I saw the footer, it's 25 years old.

New comment by keithluu in "Gemini 3 Deep Think"

keithluu — Fri, 13 Feb 2026 07:59:45 +0000

In fact, many Asian countries use lunisolar calendars, which basically follow the moon for the months but add an extra month every few years so the seasons don't drift.

As these calendars also rely on time zones for date calculation, there are rare occasions where the New Year start date differs by an entire month between 2 countries.

New comment by keithluu in "My eighth year as a bootstrapped founder"

keithluu — Wed, 11 Feb 2026 05:57:05 +0000

He does though, especially for the early ones like Nomadlist and RemoteOk. If you read his old blog you will see a significant portion of it is about digital nomadism.

New comment by keithluu in "Ask HN: What are you working on? (February 2026)"

keithluu — Mon, 09 Feb 2026 12:43:10 +0000

A goal tracking app that bridges the gap between a to-do list and a calendar. Todo lists don't track time, while calendar time blocks are too rigid.

I need something that gives me visibility into my pace on recurring goals while still allowing for flexibility, i.e. undone goals roll over to the next period. So Im building an internal app for myself.

New comment by keithluu in "An Update on Heroku"

keithluu — Sat, 07 Feb 2026 02:34:31 +0000

TIL Salesforce acquires Heroku in 2011, way before I was even a CS graduate. I remember enjoying using the free tier of Heroku for my school projects but also the pain of dyno cold starts.

New comment by keithluu in "I miss thinking hard"

keithluu — Wed, 04 Feb 2026 14:08:46 +0000

Well, depending on the scope of work, they may be still thinking hard, just on a higher level. That is, thinking about the requirements, specification, and design.

New comment by keithluu in "Ask HN: Do you also "hoard" notes/links but struggle to turn them into actions?"

keithluu — Sat, 31 Jan 2026 00:38:02 +0000

I always thought my problem was my notes being scattered and disorganized. But reading this post made me realize something. I don't need better organization for the random links or braindumps I collect over time. Because I rarely actively revisit them. Usually That happens thanks to reminders, or when I need references for something I can't find anywhere else. So I think your action engine idea is sound.

To answer your questions:

1. Retrieval. 90% of my notes never get touched the second time, and I can't remember them at the right time.

2. On my head + a simple task list I made.

3. Hallucinations and pricing.

New comment by keithluu in "Doing the thing is doing the thing"

keithluu — Wed, 28 Jan 2026 02:44:44 +0000

When saying 'doing the thing', we often mean getting some progress or a result. I'd say you did the thing if you consider the result created by the AI acceptable.

New comment by keithluu in "The challenges of soft delete"

keithluu — Wed, 21 Jan 2026 06:55:27 +0000

Agreed. In fact I believe there should be 2 main operations in a data store: retrieve and insert. For this to actually work in practice, you probably need different types of data stores for different phases of data. Unfortunately few people have a good understanding of the Data life cycle.

New comment by keithluu in "The dawn of a world simulator"

keithluu — Thu, 25 Dec 2025 09:44:19 +0000

I think they're joking.

New comment by keithluu in "Cloudflare Global Network experiencing issues"

keithluu — Tue, 18 Nov 2025 13:16:12 +0000

Some CDNs are down too, for example cdn.tailwindcss.com And apparently I can't log into Hackernews?

New comment by keithluu in "Ask HN: What Are You Working On? (Nov 2025)"

keithluu — Mon, 10 Nov 2025 04:10:44 +0000

Hey everyone! I built a site that shows your next age milestones, all on a single page. You can see your next milestone age for each type (like your 10000th day) and save it to Google Calendar.

It looks simple, but I learned a lot building this site:

* To calculate age in planetary years, I had to look up their orbit and rotation info

* The lunisolar calendar took me quite some time to figure out (it is not the same as a lunar calendar and even changes by country)

* Adding the dog and cat age equivalents even led me to cubic splines

Link to the site: https://ageequivalent.com/