Quote: eager update everywhere replication serializes conflicting transactions via total order multicast of batched updates at commit; reduce conflicts with snapshot isolation and short message delays

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The basic mechanism behind our protocols [for eager update everywhere replication] is to first perform a transaction locally, deferring and batching … are sent to all copies using a total … Upon reception, each site (including the local site) … write operations are executed in arrival order, thereby … occur. … [p. 368] Our technique minimizes the number of messages … the message overhead is constant … To alleviate the problem [of high update rates], conflict rates can … As long as message delay is reasonably short …   Google-1   Google-2

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