Problem
I want to write an application in which the user can enter any line with a length of 128 characters or less, and the application will inform the user whether they entered this line in the past.
It is expected that for each user there can be a massive number of lines, of the order of millions, as well as tens of thousands of users.
Question
It seems to me that DynamoDB would be a reasonable choice to solve this problem: the partition key as the user ID and the sort key as the string in question.
It is reasonable? Are there other installed templates for serverless hash networks?
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