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--- distributed_computing:transactions [2019/05/17 21:13] – created phreazer
+++ distributed_computing:transactions [2019/05/17 21:22] (current) – [Scenario] phreazer
@@ Line 11: / Line 11: @@
 "In presence of a network partition, one has to choose between **consistency** and **availability**".
+==== Consistency ====
+  * Strong consistency
+  * Timeline consistency: Typically async master-slave replication.
+  * Eventual consistency: Temporarily inconsistent
+====== Scenario ======
+Scaling out NOSQL across regions/public clouds. Partitioned db across clusters. How to ensure that transaction is commited on all nodes.
+Ensuring atomicity: Multi-phase commit, pessimistic read-write locking
+But: Network partitions