<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Do we really need this? Maybe a nice to have (and to tick all boxes), but have not really seen demand for this.<div><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1.0);"><b>From: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Guillermo GARCIA OCHOA <<a href="mailto:do-not-reply@jboss.com">do-not-reply@jboss.com</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1.0);"><b>Subject: </b></span><span style="font-family:'Helvetica'; font-size:medium;"><b>[Infinispan] - Re: Global/Normalized timestamp generator</b><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1.0);"><b>Date: </b></span><span style="font-family:'Helvetica'; font-size:medium;">July 11, 2012 10:57:38 AM GMT+03:00<br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1.0);"><b>To: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Galder Zamarreņo <<a href="mailto:galder.zamarreno@redhat.com">galder.zamarreno@redhat.com</a>><br></span></div><br>
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Re: Global/Normalized timestamp generator
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created by <a href="https://community.jboss.org/people/ggarciao">Guillermo GARCIA OCHOA</a> in <i>Infinispan</i> - <a href="https://community.jboss.org/message/747386#747386">View the full discussion</a>
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<div class="jive-rendered-content"><p>I strongly disagree with you ...</p><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><p>A cluster should have a normalized timestamps generator for many use cases.</p><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><p><strong>One example</strong> </p><p>Message producer/consumer: Almost all the implementations of this kind of patterns needs a normalized timestamps to know the order of processing of the distributed queue (this means several share-nothing queues). </p><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><p><strong>One real case scenario:</strong></p><p>Transaction processor: you have several servers handling business transactions, but to be faster do you not centralize all these transaction in the same queue, but in several ones. Then you can consume those queues to really process this sorted by 'creation timestamps'.</p><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><p>I know there is a lot of way to do this, but timestamps are widely used in distributed environments. Please check this:</p><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><ul><li style="text-align: start;"><span> A plugin for ActiveMQ </span><a class="jive-link-external-small" href="http://activemq.apache.org/timestampplugin.html" target="_blank">http://activemq.apache.org/timestampplugin.html</a></li><li style="text-align: start;"> In Oracle Coherence you can get this normalized timestamps with CacheFactory.ensureCluster().getTimeMillis()</li></ul><div style="min-height: 8pt; height: 8pt; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "> <br class="webkit-block-placeholder"></div><p>Dont you think that this is important enough to be added to the roadmap? Is not blocker, but I think that this is a 'must have' feature.</p></div>
<div style="background-color: #f4f4f4; padding: 10px; margin-top: 20px;"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Reply to this message by <a href="https://community.jboss.org/message/747386#747386">going to Community</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Start a new discussion in Infinispan at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2057">Community</a></div>
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<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div>--</div><div>Galder Zamarreņo</div><div>Sr. Software Engineer</div><div>Infinispan, JBoss Cache</div></span></span>
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