Thoughts About Datomic

http://nosql.mypopescu.com/post/19310504456/thoughts-about-datomic

by pron • 14 years ago

5 4 14 years ago

nosql.mypopescu.com

jdwhit2• 14 years ago

How does the transactor represent a single point of failure? Would it be possible to have two transactors?

pron• 14 years ago

But then wouldn't they need to coordinate changes to the same data items? (I'm not too familiar with the Datomic transaction model) If so, making transactors scale would require sharding.

drcode2• 14 years ago

No, the datomic videos suggest only one transactor can be operational at a time. Not sure how hard it would be to "switch over" to a second transactor waiting in the wings.

drcode2• 14 years ago

I'm pretty sure #3 in this list is not a concern. In datomic, all reads are done with a stamp that indicates the "point in time" that the read should be done at. This stamp is essentially the name of a transaction. Therefore, you can have reads essentially in the same transaction, if you just use the time of the transaction for this stamp.

(I'd love to hear answers to his other points, however.)

Thoughts About Datomic

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