DynamoDB auto incremented ID & server time (iOS SDK)
amazon-dynamodb, amazon-web-services, ios, objective-c
Solution
Actually, there are very few features in DynamoDB and this is precisely its main strength. Simplicity.
- There are no way automatically generate IDs nor UUIDs.
- There are no way to auto-generate a date
For the "date" problem, it should be easy to generate it on the client side. May I suggest you to use the ISO 8601 date format ? It's both programmer and computer friendly.
Most of the time, there is a better way than using automatic IDs for Items. This is often a bad habit taken from the SQL or MongoDB world. For instance, an e-mail or a login will make a perfect ID for a user. But I know there are specific cases where IDs might be useful.
In these cases, you need to build your own system. In this SO answer and this article from DynamoDB-Mapper documentation, I explain how to do it. I hope it helps
Problem
Is there an option in DynammoDB to store auto incremented ID as primary key in tables? I also need to store the server time in tables as the "created at" fields (eg., user create at). But I don't find any way to get server time from DynamoDB or any other AWS services. Can you guys help me with, - Working with auto incremented IDs in DyanmoDB tables - Storing server time in tables for "created at" like fields. Thanks.