Dynamodb handling multiple clients

Question

So consider the following scenario.  I currently am using a Postgres db for storing data for multiple clients one of which is a discord bot, but was thinking of trying out dynamodb as these crud operations all revolve around key value pairs.  Currently there is a primary key for each user associated with the server as well as an optional discord id for discord clients.  How would one structure primary keys for a dynamodb table to support crud methods from multiple clients.  Should I just create a global secondary index for discord id for discord users so that I can always query for it if the client is using discord?

Answer

Hi,

All possible options with multi-tenancy in DynamoDB are extremely well-detailled in this whitepaper: https://docs.aws.amazon.com/pdfs/whitepapers/latest/multi-tenant-saas-storage-strategies/multi-tenant-saas-storage-strategies.pdf#multitenancy-on-dynamodb

You should probably read it in full details to determine which proposed architecture best fits your needs.

Best,

Didier

Answer

A bit more detail about your schema is required to give an answer with the appropriate information. However, something to consider:

If the client is doing a `PutItem` call then that call replaces the item in the database. Multiple clients doing that will overwrite each others changes and that is probably undesirable.

One solution is to use `UpdateItem` and update specific attributes. There is still a risk where clients can overwrite each other's changes but that might not be an issue - depending on your schema.

An alternative is to have each client update different items. That may work for you - but it depends on your schema.

There are probably other ways to design this as well but it's not possible to say given the information available.

Dynamodb handling multiple clients

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