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That same dataset cloud then be modeled and stored in DynamoDB for even leas than that, right?

Yeah I have no idea what icedchai is talking about, DynamoDB free tier is super generous https://aws.amazon.com/dynamodb/pricing/on-demand/. It's going to cost you nothing until you have enough customers to afford to pay for it. Correctly modelling single table design on the other hand ...

I use it for lots of stuff like this. The pay-per-use/on demand pricing makes it incredibly cheap even if I get occasional bursts of activity. With much better availability than SQLite running on a single VPS.

1) Latency. 2) Ease of data manipulation.

Using Dynamo for a small data set is overkill. You can manipulate the data way faster on a local server, where it is basically in memory (disk cache), and not have to deal with any modelling issues.

I guess some people like the DynamoDB API? I find it incredibly awkward.

You can be even faster if you store data in client. Though different use case different solutions.

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