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From "Bertrand Delacretaz (Confluence)" <conflue...@apache.org>
Subject [CONF] Apache Sling > Health Checks Executor Design
Date Tue, 31 Dec 2013 10:07:00 GMT
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                                                            <a href="    https://cwiki.apache.org/confluence/display/~bdelacretaz
" style="color:#326ca6;text-decoration:none;; color: #326ca6; text-decoration: none">Bertrand
Delacretaz</a> a modifi&eacute; la page&nbsp;:
                                                        </div> </td>
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                                                    <td valign="top" style="font-size:
13px"> <h2 id="email-title-heading" style="font-size: 16px; line-height: 20px; min-height:
20px; margin: 0; padding: 0"> <a href="https://cwiki.apache.org/confluence/display/SLING/Health+Checks+Executor+Design"
style="color: #326ca6; text-decoration: none"> <img class="icon" src="cid:page-icon"
alt="" style="border: 0; padding: 0 5px 0 0; text-align: left; vertical-align: middle" />
<strong style="font-size:16px;line-height:20px;vertical-align:top;">Health Checks Executor
Design</strong> </a> </h2> </td>
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                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
                                                    <p class="diff-block-target" style="font-size:
13px">An MBean acts as a JMX facade for an HC and wants to get a result quickly. Getting
a <span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;">slightly stale </span>cached result is acceptable,
<span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color:
#ddfade;">as long as that's not expired, </span>and getting the MBean attributes
several times per second should not cause the HC to be executed every time.</p>
                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
                                                    <p class="diff-block-target" style="font-size:
13px">A human user looks at a set of HCs, selected by their tags, on the webconsole. The
user expects the webconsole page to refresh within N seconds (specified in the webconsole
execution form), even if some HCs take longer than that to execute. Getting cached results
is fine, <span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;">but </span><span class="diff-html-added"
id="added-diff-1" style="font-size: 100%; background-color: #ddfade;">as long as they are
not expired, and </span>their age should be displayed on the webconsole, as well as
the HC's name and tags. For this use case, HCs should be executed in parallel using the Sling
thread pools mechanism.</p>
                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
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13px; padding-top: 8px; max-width: 45%; text-align: left"> <span class="email-list-item"><a
href="https://cwiki.apache.org/confluence/display/SLING/Health+Checks+Executor+Design" style="color:
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href="https://cwiki.apache.org/confluence/pages/diffpagesbyversion.action?pageId=38569054&amp;revisedVersion=5&amp;originalVersion=4"
style="color: #326ca6; text-decoration: none">Afficher les modifications</a> </span>
<span class="email-list-divider" style="color: #505050; padding: 0 0.350em">&middot;</span>
<span class="email-list-item"><a href="https://cwiki.apache.org/confluence/display/SLING/Health+Checks+Executor+Design?showComments=true&amp;showCommentArea=true#addcomment"
style="color: #326ca6; text-decoration: none">Ajouter un commentaire</a> </span>
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style="color: #326ca6; text-decoration: none">G&eacute;rer les notifications</a>
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