nosql - How to setup Tables in DynamoDB to be able to query a string set/List? -


currently, have table in dynamodb schema:

id : postid (hash key)

location : locationid (range key)

tags: list of strings

now want able query tags list , each item in table , find posts have tags. how do that? reading on dynamodb docs, figure have set table since query cannot search specific strings in list/string set not able figure out how structure table.

for example, item:

postid: guid

location: somelocationstring

tags: ["queen", "royalty", "england"]

now want query items have tag called "queen" , want result set of items has tag. (postid + location)

what optimal structure? , how maintain table when adding new tags?

if understand requirements correctly can go table:

hash: tag

range: postid#locationid

that way can query on tag , pairs.

keeping both tables in sync not optimal depends how atomicity important you. perhaps @ dynamodb transactions, or "cas" inserts.


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