Ryan Emerson created ISPN-8008:
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Summary: Add Fault-tolerance to write-behind stores
Key: ISPN-8008
URL:
https://issues.jboss.org/browse/ISPN-8008
Project: Infinispan
Issue Type: Enhancement
Components: Loaders and Stores
Reporter: Ryan Emerson
Assignee: Ryan Emerson
Currently when a store is configured to be write-behind, three attempts are made to write
the queued modifications to the store. If all three attempts fail, then this error is
simply logged and the modifications are never written to the store.
We should allow users to configure a write-behind store so that: In the event that a
write-behind fails, further operations on the cache are not allowed and the modifications
which failed to write to the store are queued indefinitely. Once the underlying store
becomes available, the queued modifications should be written and then the cache should
become available.
To determine whether a store has become available again, the AsyncCacheWriter will have to
poll the store's availability. Currently the CacheWriter interface does not allow such
behaviour, therefore there are two options:
* Attempt a write and catch an exception if the store is not currently available
* Add a method to return the current status of a store to the CacheWriter interface
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