100% Consistency

[Prasad Bhalerao <pr...@gmail.com>]

Hi,
As per the doc ignite is a s strong or 100% consistent system.

e.g. I have  partitioned cache, backup count is 1, and there are two nodes
in cluster.
If I update an entry in cache on  one node and before updating the value in
backup cache(update to back is sync or async) the node crashes.
In this scenario the other node becomes primary for the backup data. Now in
this case if I access the cache for the same data for which the update to
backup  was failed, will I get the stale data ?


Thanks,
Prasad

Re: 100% Consistency

[Alexey Kukushkin <ku...@gmail.com>]

It is fully consistent only in "full sync" backup update mode but not in
"primary sync" or "async" modes. Relaxing consistency requirements would
give you better performance. Consider if your app really needs full
consistency and configure the backup update mode correspondingly.