[jboss-user] [JBoss Cache: Core Edition] - Re: MVCC Write Skew
do-not-reply at jboss.com
Wed Apr 8 13:39:34 EDT 2009
I've read this sentence in the "clustering guide draft":
It achieves this (readers that don't block writers, writers that fail-fast) by using data versioning and copying for concurrent writers. The theory is that readers continue reading shared state, while writers copy the shared state, increment a version id, and write that shared state back after verifying that the version is still valid (i.e., another concurrent writer has not changed this state first).
I guess it refers to R_R behaviour ( and not R_C ), but again, is there any other reason (tx concurrency) to abort a transaction or restart it ??
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