1.) What features not yet implemented should go into the Slide 2.0 release?
Tx caching in ExtendedStore does not have locking, but relies on the cached store for correctness. If the store does not use a conservative locking protocol isolation might be compromised.
A solution to this might be the global locking discussed in the other thread. This would also enable lower isolation levels in the store tier. Another solution would be to add non-blocking locks directly to the cache. This is complicated and error-prone, but would allow for a write back caching protocol as a side effect.
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