Hacker News: mebcitto

New comment by mebcitto in "Postmortem: TanStack NPM supply-chain compromise"

mebcitto — Tue, 12 May 2026 09:41:09 +0000

Unfortunately there is currently an issue in pnpm that makes `minimumReleaseAge` difficult: https://github.com/pnpm/pnpm/issues/11068

New comment by mebcitto in "Bun's experimental Rust rewrite hits 99.8% test compatibility on Linux x64 glibc"

mebcitto — Sat, 09 May 2026 19:57:39 +0000

That might be opus 4.7 behaviour because I also get that all the time in the past few weeks. Also complex code base, but likely an order of magnitude simpler than yours.

Postgres on K8s with fast data branching

mebcitto — Sat, 09 May 2026 13:06:54 +0000

Article URL: https://github.com/xataio/xata

Comments URL: https://news.ycombinator.com/item?id=48074691

Points: 3

# Comments: 0

Exposing ZFS volumes over the network via NVMe-oF

mebcitto — Sat, 02 May 2026 11:43:19 +0000

Article URL: https://xata.io/blog/xatastor-zfs-nvme-of-for-millions-of-postgres-databases

Comments URL: https://news.ycombinator.com/item?id=47985542

Points: 4

# Comments: 0

New comment by mebcitto in "Why C Remains the Gold Standard for Cryptographic Software"

mebcitto — Sun, 26 Apr 2026 07:37:52 +0000

This rings true to me. Rust is great but in environments where you need a lot of unsafe anyway, it’s still not memory safe, and adds complexity otherwise.

Xata OSS: Postgres platform with branching, now Apache 2.0

mebcitto — Sat, 18 Apr 2026 20:00:17 +0000

Article URL: https://xata.io/blog/open-source-postgres-branching-copy-on-write

Comments URL: https://news.ycombinator.com/item?id=47819050

Points: 1

# Comments: 0

New comment by mebcitto in "Benchmarking Postgres 17 vs. 18"

mebcitto — Fri, 24 Oct 2025 04:10:27 +0000

That explains why `sync` and `worker` have so similar results in almost all runs. The benchmarks from Tomas Vondra (https://vondra.me/posts/tuning-aio-in-postgresql-18/) showed some significant differences.

New comment by mebcitto in "Fixing UUIDv7 (for database use-cases)"

mebcitto — Thu, 23 Oct 2025 17:33:45 +0000

Yeah, I don't think "fixing" is really the right term here, since this brings a different set of tradeoffs. You don't leak timestamps, you get ok page locality, but you lose the ability to sort by the IDs. I do see how this might be a good choice for a general PK default (i.e. by default, don't leak stuff).

Fixing UUIDv7 (for database use-cases)

mebcitto — Thu, 23 Oct 2025 04:27:00 +0000

Article URL: https://brooker.co.za/blog/2025/10/22/uuidv7.html

Comments URL: https://news.ycombinator.com/item?id=45678169

Points: 4

# Comments: 1

New comment by mebcitto in "Liquibase continues to advertise itself as "open source" despite license switch"

mebcitto — Thu, 16 Oct 2025 13:42:28 +0000

It's Postgres specific but there is https://github.com/xataio/pgroll which takes the automation a step further.

Speeding up pgstream snapshots for PostgreSQL

mebcitto — Thu, 03 Jul 2025 20:17:17 +0000

Article URL: https://xata.io/blog/behind-the-scenes-speeding-up-pgstream-snapshots-for-postgresql

Comments URL: https://news.ycombinator.com/item?id=44458805

Points: 1

# Comments: 0

Database Branching for PostgreSQL: A Comparision

mebcitto — Sat, 14 Jun 2025 07:50:42 +0000

Article URL: https://xata.io/blog/neon-vs-supabase-vs-xata-postgres-branching-part-1

Comments URL: https://news.ycombinator.com/item?id=44274920

Points: 1

# Comments: 0

New comment by mebcitto in "Multigres: Vitess for Postgres"

mebcitto — Tue, 10 Jun 2025 15:31:46 +0000

This is very interesting, thanks for offering to answer questions. I'm curious of two things:

* Are you also considering going the Postgres extension route, like Citus? It is after all the best attempt at sharding Postgres so far.

* If you are willing to share, why not doing this from inside Planetscale? I assume it was at least considered over the years.

New comment by mebcitto in "Pglocks.org"

mebcitto — Sun, 18 May 2025 10:50:20 +0000

Other relevant talks/blogs that I found really useful for understanding Postgres locks are:

* Unlocking the Postgres Lock Manager by Bruce Momjian: https://momjian.us/main/writings/pgsql/locking.pdf

* Anatomy of table-level locks by Gulcin Yildirim Jelinek: https://xata.io/blog/anatomy-of-locks

Xata: Postgres at scale, with copy-on-write branching and anonymization

mebcitto — Sat, 17 May 2025 19:06:14 +0000

Article URL: https://xata.io/blog/xata-postgres-with-data-branching-and-pii-anonymization

Comments URL: https://news.ycombinator.com/item?id=44016289

Points: 45

# Comments: 16

AI Agents and Observability

mebcitto — Sun, 30 Mar 2025 10:42:55 +0000

Article URL: https://xata.io/blog/are-ai-agents-the-future-of-observability

Comments URL: https://news.ycombinator.com/item?id=43523074

Points: 2

# Comments: 0

Emerging Patterns in Building GenAI Products

mebcitto — Tue, 25 Feb 2025 19:17:09 +0000

Article URL: https://martinfowler.com/articles/gen-ai-patterns/

Comments URL: https://news.ycombinator.com/item?id=43176070

Points: 3

# Comments: 0

New comment by mebcitto in "Kuvasz-streamer: open-source CDC for Postgres for low latency replication"

mebcitto — Fri, 03 Jan 2025 09:41:11 +0000

From the newish Go-based Postgres CDC tools, I know about:

* pgstream: https://github.com/xataio/pgstream

* pg_flo: https://github.com/pgflo/pg_flo

Are there others? Each of them has slightly different angles and messaging, but it is interesting to see.

New comment by mebcitto in "Databases in 2024: A Year in Review"

mebcitto — Wed, 01 Jan 2025 19:09:33 +0000

I assume it's not that kind of ban, but more like he'll recommend his students to avoid the company.

New comment by mebcitto in "Databases in 2024: A Year in Review"

mebcitto — Wed, 01 Jan 2025 17:46:04 +0000

A couple of spicy things:

> OtterTune. Dana, Bohan, and I worked on this research project and startup for almost a decade. And now it is dead. I am disappointed at how a particular company treated us at the end, so they are forever banned from recruiting CMU-DB students. They know who they are and what they did.

Ouch.

> Lastly, I want to give a shout-out to ByteBase for their article Database Tools in 2024: A Year in Review. In previous years, they emailed me asking for permission to translate my end-of-year database articles into Chinese for their blog. This year, they could not wait for me to finish writing this one, so they jocked my flow and wrote their own off-brand article with the same title and premise.

Also sounds like he's preparing a new company:

> I hope to announce our next start-up soon (hint: it’s about databases).