DynamoDB collection type conflict resolutionAmazon SimpleDB vs Amazon DynamoDBQuerying DynamoDB by dateDynamoDB vs MongoDB NoSQLHow to Add a Column in DynamoDBDynamoDB create index on map or list typeAre DynamoDB “set” values CDRTs?DynamoDB conflict resolution strategyWhat is better approach to the next DynamoDB usage case?DynamoDB table/index schema design for querying multi-valued attributesDynamoDB - Global tables conflict resolution
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DynamoDB collection type conflict resolution
Amazon SimpleDB vs Amazon DynamoDBQuerying DynamoDB by dateDynamoDB vs MongoDB NoSQLHow to Add a Column in DynamoDBDynamoDB create index on map or list typeAre DynamoDB “set” values CDRTs?DynamoDB conflict resolution strategyWhat is better approach to the next DynamoDB usage case?DynamoDB table/index schema design for querying multi-valued attributesDynamoDB - Global tables conflict resolution
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I've been unable to find any documentation on how, if at all, DynamoDB handles conflicts in its set, list, and map collection types. My current understanding is that DynamoDB uses a last-writer-wins strategy. That is to say, if two concurrent writers both add to a set, one of those additions could be lost.
This is different from two other databases I have used, Cassandra and Riak. Both have well-defined conflict resolution strategies, as they back these types with CRDTs. So, modulo other failure modes, concurrent additions to a set will always eventually result in both additions taking place.
Because that Amazon's documentation doesn't cover it, I'm inclined to believe that there is no conflict management of any kind. But, I'd love to know if anyone has an other information and/or first-hand experience.
amazon-web-services amazon-dynamodb
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
add a comment |
I've been unable to find any documentation on how, if at all, DynamoDB handles conflicts in its set, list, and map collection types. My current understanding is that DynamoDB uses a last-writer-wins strategy. That is to say, if two concurrent writers both add to a set, one of those additions could be lost.
This is different from two other databases I have used, Cassandra and Riak. Both have well-defined conflict resolution strategies, as they back these types with CRDTs. So, modulo other failure modes, concurrent additions to a set will always eventually result in both additions taking place.
Because that Amazon's documentation doesn't cover it, I'm inclined to believe that there is no conflict management of any kind. But, I'd love to know if anyone has an other information and/or first-hand experience.
amazon-web-services amazon-dynamodb
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
1
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23
add a comment |
I've been unable to find any documentation on how, if at all, DynamoDB handles conflicts in its set, list, and map collection types. My current understanding is that DynamoDB uses a last-writer-wins strategy. That is to say, if two concurrent writers both add to a set, one of those additions could be lost.
This is different from two other databases I have used, Cassandra and Riak. Both have well-defined conflict resolution strategies, as they back these types with CRDTs. So, modulo other failure modes, concurrent additions to a set will always eventually result in both additions taking place.
Because that Amazon's documentation doesn't cover it, I'm inclined to believe that there is no conflict management of any kind. But, I'd love to know if anyone has an other information and/or first-hand experience.
amazon-web-services amazon-dynamodb
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
I've been unable to find any documentation on how, if at all, DynamoDB handles conflicts in its set, list, and map collection types. My current understanding is that DynamoDB uses a last-writer-wins strategy. That is to say, if two concurrent writers both add to a set, one of those additions could be lost.
This is different from two other databases I have used, Cassandra and Riak. Both have well-defined conflict resolution strategies, as they back these types with CRDTs. So, modulo other failure modes, concurrent additions to a set will always eventually result in both additions taking place.
Because that Amazon's documentation doesn't cover it, I'm inclined to believe that there is no conflict management of any kind. But, I'd love to know if anyone has an other information and/or first-hand experience.
amazon-web-services amazon-dynamodb
amazon-web-services amazon-dynamodb
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
asked Mar 27 at 18:50
MattieMattie
1,7442 gold badges17 silver badges27 bronze badges
1,7442 gold badges17 silver badges27 bronze badges
did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
1
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23
add a comment |
did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
1
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23
did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
1
1
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23
add a comment |
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did you check dynamodb transaction? docs.aws.amazon.com/amazondynamodb/latest/developerguide/…
– best wishes
Mar 28 at 2:01
1
What I’m really interested in is the collection types behavior outside of transactions. CRDTs don’t really make sense to use if you wrap everything in a transaction, because conflict won’t happen.
– Mattie
Mar 28 at 13:23