HSBC moves from 65 relational databases into one global MongoDB database

Re:HSBC moves from 65 relational databases into one global M... by bob1029 on Saturday June 13, 2020 @05:32AM (#23508157)

I have to say that on the surface, this sounds horrific.

- MongoDB: Yes

- Micro Services: Yep

- Some attempt at a grand unifying model: Of course

That's pretty much a 10/10 shitshow as far as I am concerned. Mix in banking regs & regional differences for afterburner on that money furnace.

But, in reality, I doubt that one of those 65 relational databases involves the core customer/account/transaction processing facilities. These are probably (hopefully) still running on an IBM system with proper ACID & uptime guarantees. Anything a live transaction flow (especially credit/debit processing) is going to touch could never be trusted on something like MongoDB in this current reality.

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Re:HSBC moves from 65 relational databases into one global M... by sohamsankaran on Saturday June 13, 2020 @05:37AM (#23508183)

My fear is that those IBM systems running Db2 or something were counted among the 65. While it seems obvious to us that they're better off without switching those, I know of several companies in financial services that should know better that trust MongoDB for their core transaction flow.

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Re:HSBC moves from 65 relational databases into one global M... by guillaumei on Saturday June 13, 2020 @09:45AM (#23509313)

The 65 relational databases are for the same application or similar deployed in 65 countries...At least I read it in that way.

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Re:HSBC moves from 65 relational databases into one global M... by jeremyjh on Saturday June 13, 2020 @12:58PM (#23510791)

They didn't switch anything of consequence. A bank the size of HSBC has thousands of application databases. They never migrate their core transaction systems, they just build piles of shit around them ever higher.

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