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llmslave 2 minutes ago [-]
American Express tech is some of the worst in the world among big companies. All of the value in the company is just in the branding. They put some work into the mobile app and the website, but other than that, its a facade.
neerajsi 42 minutes ago [-]
I wonder how they ensure durability. Is it possible that a cell going down would roll back a payment after it has occurred. Or do they depend on a non cell database?
subtlejellyfish 7 minutes ago [-]
I would assume nothing related to a given transaction crosses the cell boundary.
We use a cellular architecture to help constrain the blast radius of a modular monolith. Each one of our customers lives in exactly 1 cell. Any kind of cross-customer BI/reporting happens through a data warehouse.
jeremycarter 40 minutes ago [-]
As Reddit already pointed out, this is nothing novel.
kev009 59 minutes ago [-]
There things are always a clusterfsck compared to the mainframe deployments.
rekttrader 1 hours ago [-]
So you’re telling me these cells operate independently like distributed Ethereum nodes and L2s… got it.
toast0 3 days ago [-]
They run their payment systems on ps3??? Somebody bought into the marketting a bit much.
We use a cellular architecture to help constrain the blast radius of a modular monolith. Each one of our customers lives in exactly 1 cell. Any kind of cross-customer BI/reporting happens through a data warehouse.