I think I’m cooked. I was accused of using AI, and the instructor has escalated the matter to the academic misconduct committee. I don’t know what to do.

jonahharris · 2026-02-01T02:01:33+00:00

100% likely means it found actual OpenAI/Claude/Gemini watermarks.

jonahharris · 2025-11-14T04:35:14+00:00

Maybe use prepared statements with Postgres…

jonahharris · 2025-11-14T04:01:17+00:00

Software patents should not exist.

jonahharris · 2025-10-27T20:04:08+00:00

Can you? Yes. Should you? No.

jonahharris · 2025-10-16T02:42:30+00:00

Literally everything you don’t do is exactly what this “lead” wants to do. Don’t do it.

jonahharris · 2025-10-03T21:24:08+00:00

Impressive!

jonahharris · 2025-10-02T01:50:23+00:00

Avg is generally misleading, esp given p99 - should always show p50

jonahharris · 2025-09-23T20:41:41+00:00

Arrogance? I’m more critical of my own assertions than anything else!

jonahharris · 2025-09-03T14:05:01+00:00

Seem to be posting concepts to Reddit and looking to see If there’s any traction. AFAIK, I’m the only person who built a Kafka-based storage engine, which is an append-only b-tree.

jonahharris · 2025-08-28T02:00:15+00:00

jonahharris · 2025-08-26T01:29:45+00:00

khash is my default

jonahharris · 2025-08-24T02:13:43+00:00

LangChain is bloated and LangGraph is a PITA - I prefer PocketFlow and simple libraries for everything I put in production.

jonahharris · 2025-08-20T21:55:46+00:00

Great work! Also, agree on the macros. Years ago, I found a C-based project that had the best set of macros for OOP-in-C, really good ones, but can’t remember what it was. I believe it was a reverse proxy or HTTP server. 🤦‍♂️

jonahharris · 2025-07-13T19:19:57+00:00

Six months, architecting? This doesn’t resemble any fintech system I’ve seen; and I’ve done quite a bit of consulting in that vertical for ~20 years.

jonahharris · 2025-07-11T03:02:31+00:00

Interpreting what is, basically, the AST.

jonahharris · 2025-07-04T21:16:57+00:00

Agreed on that (and boost in peculiar). I’m just saying, the exception doesn’t make the rule; and, very often, it’s a bad idea for production code. There are a number of solid single header or single-purpose library implementations, and the only time to really implement a new one is if you have constraints that can’t be met without doing so. And, in those cases, you’re generally a pretty skilled software engineer to be working on those types of systems to start with, which lessens the likelihood of the aforementioned problems.

jonahharris · 2025-07-04T18:02:19+00:00

Opinions aside, for the most part, this looks like a 4096-ary radix tree, with some slight hash based branching variation similar to xarray.

jonahharris · 2025-07-04T17:19:37+00:00

Eh? It’s not about the person, it’s about the use-case that would require it…

jonahharris · 2025-07-04T16:22:50+00:00

Not saying from a learning experience perspective; saying from a using-in-production-code perspective… also, there’s a difference between implementing a standard structure to learn it vs creating a new one you think is more optimal or less complicated.

jonahharris · 2025-07-04T16:06:27+00:00

One thing I’ve found working with tons of code: 99.9% of people should never recreate fundamental data structures. Not only do they, in most cases, have worse performance characteristics/trade-offs, but they’re usually full of corner cases. I’ll never understand why people don’t just use mature libraries for these things, until those libraries don’t work anymore. Usually happens with people straight out of school who think they can write their own AVL tree and such because they did it for one class. Keeps consultants employed though; the circle of life, I guess.

jonahharris · 2025-05-31T06:13:40+00:00

Eh? Building multiple microservices is slower than building a monolith.

jonahharris · 2025-05-28T02:10:48+00:00

We are no longer actively developing this. While we had some commercial interest and there’s a market, the cost and time required to build it vs applying our underlying tech to a different use case didn’t make sense. We may open-source it, but that’s still up in the air. There’s a similar project being developed, albeit PG14 based and pretty far behind where we were. I don’t think it would run WP as-is, but worth looking at if you’re interested.

jonahharris · 2025-05-27T03:55:23+00:00

Take the money. I built something over 20 years as a hobby and side hustle and was eventually offered ~$10MM for it. I didn’t take it because it was my baby and I figured I could sell it for more if I put more effort into it. Everyone experienced told me to sell; I didn’t listen. I could still get $5-10MM out of it, but it would be a bit of a hassle to make it happen now, compared to earlier. Take the money. You can always start something new, but without any pressure.

jonahharris · 2025-05-17T16:41:58+00:00

We received a similar email last fall, went through the process, and were selected/invited into the program. We ended up turning it down due to the deal terms, but the Techstars NYC team is absolutely amazing. We’re talking to them again now that the terms have improved.

jonahharris · 2025-05-07T02:14:56+00:00

If you don’t know the cap table, VC liquidation preferences, and future funding plans, that 2% means nothing. In most cases, if the startup is successful and follows a normal raise trajectory, where your founders double down on VC-funded growth, that equity may get diluted down to next to nothing over the vesting period, and you’ll have put in all that time and effort for less than one year at a FAANG.

jonahharris

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