Thread-safe transactions #132
Merged
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In this PR we introduce an API for thread-safe Datastore transactions.
Previously, transactions were handled by
DatastoreWrapper. When required, the wrapper substituted theDatastorefor a transaction and executed all the requests upon that transaction.This approach caused concurrency issues.
Now that API is deprecated. It should be removed in subsequent releases.
The new API for transactions allows managing a single Datastore transaction independently of all the others.