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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-29416] all for $regex to be performant with end-string anchor </title>
                <link>https://jira.mongodb.org/browse/SERVER-29416</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we have millions of documents stored in a collection that use an email field  with index.  We would like to efficiently search through the collection for either a specific email address, or a domain name.  The docs indicate that a query should start with a carrot for the regex to be used efficiently.  We would love to be able to do the 2 following searches:&lt;/p&gt;

&lt;p&gt;/jdoe@example.com$/&lt;br/&gt;
/@example.com$/&lt;/p&gt;

&lt;p&gt;Both could easily use the same index if they could be optimized.&lt;/p&gt;</description>
                <environment></environment>
        <key id="389175">SERVER-29416</key>
            <summary>all for $regex to be performant with end-string anchor </summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="amit.gupta@sendergen.com">Amit Gupta</reporter>
                        <labels>
                    </labels>
                <created>Thu, 1 Jun 2017 16:26:17 +0000</created>
                <updated>Fri, 2 Jun 2017 00:29:54 +0000</updated>
                            <resolved>Fri, 2 Jun 2017 00:29:54 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1585556" author="thomas.schubert" created="Fri, 2 Jun 2017 00:29:54 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=amit.gupta%40sendergen.com&quot; class=&quot;user-hover&quot; rel=&quot;amit.gupta@sendergen.com&quot;&gt;amit.gupta@sendergen.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for your report. For MongoDB-related support discussion please post on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;. &lt;/p&gt;

&lt;p&gt;I&apos;d recommend asking a question about this use case on on the mongodb-users group, where other users can discuss their solutions.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
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