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Ask HN: Anyone Using a Mac Studio for Local AI/LLM?

44•UmYeahNo•1d ago•28 comments

Ask HN: Ideas for small ways to make the world a better place

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Ask HN: Non AI-obsessed tech forums

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Ask HN: Non-profit, volunteers run org needs CRM. Is Odoo Community a good sol.?

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Ask HN: 10 months since the Llama-4 release: what happened to Meta AI?

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AI Regex Scientist: A self-improving regex solver

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Ask HN: Who wants to be hired? (February 2026)

139•whoishiring•4d ago•514 comments

Ask HN: Who is hiring? (February 2026)

312•whoishiring•4d ago•511 comments

Tell HN: Another round of Zendesk email spam

104•Philpax•2d ago•54 comments

Ask HN: Is Connecting via SSH Risky?

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Ask HN: Why LLM providers sell access instead of consulting services?

4•pera•18h ago•13 comments

Ask HN: Has your whole engineering team gone big into AI coding? How's it going?

17•jchung•2d ago•12 comments

Ask HN: Any International Job Boards for International Workers?

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Ask HN: What is the most complicated Algorithm you came up with yourself?

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Ask HN: How does ChatGPT decide which websites to recommend?

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Ask HN: Is it just me or are most businesses insane?

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2•guhsnamih•1d ago•4 comments

Kernighan on Programming

170•chrisjj•4d ago•61 comments

Ask HN: Does global decoupling from the USA signal comeback of the desktop app?

5•wewewedxfgdf•1d ago•2 comments

We built a serverless GPU inference platform with predictable latency

5•QubridAI•2d ago•1 comments

Ask HN: How Did You Validate?

4•haute_cuisine•1d ago•4 comments

Ask HN: Does a good "read it later" app exist?

8•buchanae•3d ago•18 comments

Ask HN: Have you been fired because of AI?

17•s-stude•4d ago•15 comments

Ask HN: Cheap laptop for Linux without GUI (for writing)

15•locusofself•3d ago•16 comments

Ask HN: Anyone have a "sovereign" solution for phone calls?

12•kldg•3d ago•1 comments

Test management tools for automation heavy teams

2•Divyakurian•1d ago•2 comments

Ask HN: OpenClaw users, what is your token spend?

14•8cvor6j844qw_d6•4d ago•6 comments

Ask HN: Has anybody moved their local community off of Facebook groups?

23•madsohm•4d ago•18 comments
Open in hackernews

Ask HN: I'm a New PostgreSQL Hacker – What Problems Do You Face with Postgres?

7•DumBthInker007•9mo ago
Hi HN,

I'm a developer diving deep into PostgreSQL internals, aiming to contribute meaningfully to the project. I have a strong grasp of core components like the internal architecture, physical replication, WAL (Write-Ahead Logging), and buffer management. I'm now expanding into areas like logical replication, asynchronous I/O (AIO), the optimizer, and beyond.

To learn and grow as a Postgres hacker, I want to hear directly from you—PostgreSQL users—about the problems you face, big or small. These could be operational challenges, performance bottlenecks, confusing behaviors, missing features, or friction points in your workflows.

For me, it's a win-win: you get a contributor trying to tackle real problems, and I get to deepen my understanding by working on issues that matter in the real world. If a problem resonates with me, I’ll do my best to investigate, learn, and potentially create a patch to address it.

Thanks—and I look forward to hearing from you!

Comments

znpy•9mo ago
I'd like to see something like MySQL's Group Replication in PostgreSQL.

HA is still a wheel you have to re-invent yourself every time with PostgreSQL.

References for what i'm talking about:

- Group Replication: https://dev.mysql.com/doc/refman/8.4/en/group-replication.ht...

DumBthInker007•9mo ago
thanks for the quick reply, will surely look into it.
znpy•9mo ago
You're welcome. The bigger picture is probably this: https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-cluster...
DumBthInker007•9mo ago
thanks for sharing.
WilcoKruijer•9mo ago
I’d like to see a true monotonic counter in Postgres. Serials can increment out of order when multiple transactions are active. We can obtain the WAL LSN, but it’s not related to the currently active transaction. I really like FoundationDB’s versionstamp, would be great to have that in Postgres.
DumBthInker007•9mo ago
Thanks for the reply,will surely look into it.
dapperdrake•9mo ago
How is a "true monotonic counter" supposed to interact with atomicity and isolation of transactions? Sounds like a global bottleneck.

Is uniqueness sufficient or is it really required to step through all integers without missing any?

EDIT: Missing primary keys in-between also bothers me, however, never found a decent solution for this at scale.

hyperman1•9mo ago
Parallell insert. I can easily saturate a CPU with insert statements, with io very low.
DumBthInker007•9mo ago
Hi thanks for the reply ,i guess there was some ongoing work for this and for some reason it didn't continued this is the thread https://www.postgresql.org/message-id/flat/CAJcOf-cXnB5cnMKq... if you are interested in, but for sure i will look into this(added to my list:).
hyperman1•9mo ago
What can I say, except thank you very much.
dapperdrake•9mo ago
That seems like an unintuitive consequence. Saturating disk would have been obvious. But CPU?

Does anything about the INSERT pattern seem "special"? Or does it happen for many different "kinds of INSERT statements"?

I_am_tiberius•9mo ago
1. I'd like a native way to scale horizontally based on tenant ids without using citus. 2. array constraints (foreign keys) -> meaning that each item in the array references an id in another table.
cssanchez•9mo ago
My experience with PG ended a few years ago. The thing that killed PG for me is the lack of collation for searches. I haven't tested since the last updates that mentioned something along these lines, so this may have improved.

PG for years relied on unaccent which is not a true solution as it requires manually storing two versions of a text (the original and the un-accented one) and handle indexes + searches manually for each field... Not to mention unaccent itself is an extension you have to install. Whereas collation is built-in and it just works by handling it all under the hood in SQL Server. This feature alone is worth switching databases for my use cases.

That and the updates being a royal pain.

DumBthInker007•9mo ago
Thanks for sharing.