While S3 has an object size limit of 5TB per object and NotoDB sets are stored as S3 objects, it's recommended to keep your NotoDB sets under 5MB. This is the equivalent of ~40,000 items in a set with 20-30 attributes in each item.
If you are using NotoDB's hosted cloud service, your sets must be under 6MB in size or your request will fail when attempting to list items from your set. This will be true for an instance of NotoDB hosted through AWS Lambda.
If you are hosting NotoDB outside of AWS Lambda such as on an EC2 instance or another hosting option, you are not restricted to the 6MB limit for set sizes. However, we highly recommend using caution as the larger your set the grows, the more expensive it is to write new items or upate existing items in a set.
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