Hacker News: Snelius

New comment by Snelius in "Zero downtime migrations at petabyte scale (2024)"

Snelius — Tue, 24 Feb 2026 02:19:20 +0000

Thank you for the link but it's not the same case ;) Google used storage switching which has migration in mixed mode, i.e. migration on demand when data migrated due user access to. API had compatibility layer to read/write from/to both storage systems (i built kind of this migration mechanism about decade ago). And google spend about 8 years for the migration which ok. And the article about Database migration which can be periodical process (critical scheme changes for example) and they describe it to us. Take snapshot and racing with snapshot overhead changes and etc. I think we can let's over here. It's not a zero downtime solution cuz it's not exists.

New comment by Snelius in "Zero downtime migrations at petabyte scale (2024)"

Snelius — Mon, 23 Feb 2026 02:58:24 +0000

> The code is open source though, you can read it

Thank you! :D

> Is pretty well trodden ground.

YES!! But the article point us to it's a 400TB+ w/o downtime migration. This is impossible. That why is looks like clickbait and advertising of a product.

New comment by Snelius in "Zero downtime migrations at petabyte scale (2024)"

Snelius — Sun, 22 Feb 2026 07:16:23 +0000

He can't. It's not a reference, just a bunch of CLI examples. Please learn what is the reference. Even docs is a BS, wonderful product. Overall this article is a typical advertising and clickbait..

New comment by Snelius in "Zero downtime migrations at petabyte scale (2024)"

Snelius — Fri, 20 Feb 2026 03:15:15 +0000

> Load in latest db dump, may take as long as it wants.

400TB its about a week+ ?

> Then start replication and catch up on the delay.

Then u have a changes in the delay about +- 1TB. It means a changes syncing about few days more while changes still coming.

They said "current requests are buffered" which is impossible, especial for long distributed (optional) transactions which in a progress (it can spend a hours, days (for analitycs)).

Overwall this article is a BS or some super custom case which irrelevant for common systems. You can't migrate w/o downtime, it's a physical impossible.

New comment by Snelius in "Apple will phase out Rosetta 2 in macOS 28"

Snelius — Wed, 29 Oct 2025 01:55:06 +0000

W/o rossetta i can't build x86_64 images anymore. Today i can setup OrbStack amd64 linux and build native amd64 images on my mac to put on my servers.

New comment by Snelius in "Where's Firefox going next?"

Snelius — Wed, 16 Jul 2025 01:40:18 +0000

"ublock origin lite" works well

New comment by Snelius in "Notepad++ is 21 years old"

Snelius — Sat, 02 Nov 2024 01:19:39 +0000

vim beats all of them

New comment by Snelius in "Why is Common Lisp not the most popular programming language?"

Snelius — Thu, 15 Feb 2024 01:42:48 +0000

(i)(don't)(know)

New comment by Snelius in "Jaq – A jq clone focused on correctness, speed, and simplicity"

Snelius — Thu, 30 Nov 2023 01:34:58 +0000

It's not the same. The jq is not just a viewer. It's a JSON query lang processor.

New comment by Snelius in "WASM by example"

Snelius — Thu, 16 Nov 2023 02:33:19 +0000

Such annoying. I can't find anymore about wasm assembler compiler.

New comment by Snelius in "Daktilo: Turn Your Keyboard into a Typewriter"

Snelius — Wed, 04 Oct 2023 02:08:38 +0000

Much better. Thank you.

New comment by Snelius in "SectorC: A C Compiler in 512 bytes"

Snelius — Thu, 25 May 2023 01:55:06 +0000

It was funny to read. Thx! :))

New comment by Snelius in "Clock"

Snelius — Wed, 19 Apr 2023 02:08:55 +0000

I still don't know what time it is. "Nice" UI.

New comment by Snelius in "When programming is gone, will we like what’s left?"

Snelius — Mon, 27 Mar 2023 02:22:25 +0000

when what? :)

New comment by Snelius in "Switching from C++ to Rust"

Snelius — Tue, 14 Mar 2023 02:12:42 +0000

Good luck! lol

New comment by Snelius in "Rust – What made it “click” for me (Ownership and memory internals)"

Snelius — Mon, 20 Feb 2023 02:15:18 +0000

It has not a success. Just aggressive ads.

New comment by Snelius in "Show HN: Portable Secret – How I store my secrets and communicate privately"

Snelius — Thu, 22 Dec 2022 02:55:22 +0000

Yea. The html must have signature and Bob has public key of Alice to verify ... and we here again. :)

New comment by Snelius in "Mildly interesting quirks of C"

Snelius — Mon, 21 Nov 2022 01:54:13 +0000

Fantastic language. Truly freedom for a programmer. Thank you Dennis. Modern languages program you. :)

New comment by Snelius in "Source Code for SunOS 4.1.3 (1992)"

Snelius — Sat, 29 Oct 2022 02:58:13 +0000

Coding culture is very impressive.

New comment by Snelius in "55 GiB/s FizzBuzz"

Snelius — Fri, 29 Oct 2021 03:09:08 +0000

Good work!