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Re:Cassandra at Apple: 1000s of Clusters, 300k Nodes, 100 PB by ChrisMarshallNY on Sunday October 09, 2022 @05:10AM (#33139284)
> and old deleted data might come up again and be repropagated

That pretty much describes iCloud.

Argh! Zombies!

iCloud has terrible syncing. Here’s an example. Synced bookmarks in Safari:

I use three devices, regularly; my laptop (really a desktop, most of the time), my iPad (I’m on it, now), and my iPhone.

On any one of these devices, I may choose to “favorite” a page, and add it to a fairly extensive hierarchy of bookmarks, that I prefer to keep in a Bookmarks Bar.

Each folder can have a lot of bookmarks. Most are ones that I hardly ever need to use, and I generally access them via a search.

I like to keep the “active” ones at the top of the folder. This is especially important for my iPhone, which has an extremely limited screen (it’s an iPhone 13 Mini -Alas, poor Mini. I knew him well).

The damn bookmarks keep changing order. If I drag one to the top of the menu, I do that, because it’s the most important one, and I don’t want to scroll the screen.

The issue is that the order of bookmarks changes, between devices. In fact, I just noticed that a bookmark that I dragged to the top of one of my folders, yesterday, is now back down, several notches.

Don’t get me started on deleting contacts, or syncing Messages.

I assume that this is a symptom of DB dysfunction.

Re:Cassandra at Apple: 1000s of Clusters, 300k Nodes, 100 PB by rfoo on Sunday October 09, 2022 @05:45AM (#33139456)
This is a symptom of DB dysfunction only if you are using just one device.

Otherwise it's far more likely to be faulty sync algorithm.