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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-77012] Optimize NamespaceString construction in authorization path</title>
                <link>https://jira.mongodb.org/browse/SERVER-77012</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When inspecting a recent flamegraph, we observed a decent amount of time spent in authorization and in particular in &lt;tt&gt;NamespaceStringUtil&lt;/tt&gt; for parsing tenant ids for requests. A few optimizations came to mind:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Don&apos;t combine dbName and collectionName into a string, just to split it later when building a NamespaceString.&lt;/li&gt;
	&lt;li&gt;Alternatively, skip parsing completely in all paths if multitenancy is not enabled&lt;/li&gt;
	&lt;li&gt;Provide optimized constructors for both &lt;tt&gt;NamespaceString(DatabaseName, StringData)&lt;/tt&gt; and &lt;tt&gt;NamespaceString(boost::optional&amp;lt;TenantId&amp;gt;, StringData, StringData)&lt;/tt&gt; to avoid any unnecessary allocations&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2337526">SERVER-77012</key>
            <summary>Optimize NamespaceString construction in authorization path</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="13201">Fixed</resolution>
                                        <assignee username="matt.broadstone@mongodb.com">Matt Broadstone</assignee>
                                    <reporter username="matt.broadstone@mongodb.com">Matt Broadstone</reporter>
                        <labels>
                    </labels>
                <created>Wed, 10 May 2023 20:47:23 +0000</created>
                <updated>Sun, 29 Oct 2023 21:21:41 +0000</updated>
                            <resolved>Tue, 16 May 2023 13:35:10 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.0-rc1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5429538" author="xgen-internal-githook" created="Tue, 16 May 2023 19:40:06 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matt Broadstone&apos;, &apos;email&apos;: &apos;mbroadst@mongodb.com&apos;, &apos;username&apos;: &apos;mbroadst&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77012&quot; title=&quot;Optimize NamespaceString construction in authorization path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77012&quot;&gt;&lt;del&gt;SERVER-77012&lt;/del&gt;&lt;/a&gt; Skip parsing for tenantIds if multitenancy disabled&lt;/p&gt;

&lt;p&gt;(cherry picked from commit d12e38e18857307e369c23dde1873b54666d6ae3)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7bdbb9dc513db9ccb36ab66ef5964be3d75a0b8d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7bdbb9dc513db9ccb36ab66ef5964be3d75a0b8d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5427880" author="xgen-internal-githook" created="Tue, 16 May 2023 12:03:36 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matt Broadstone&apos;, &apos;email&apos;: &apos;mbroadst@mongodb.com&apos;, &apos;username&apos;: &apos;mbroadst&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77012&quot; title=&quot;Optimize NamespaceString construction in authorization path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77012&quot;&gt;&lt;del&gt;SERVER-77012&lt;/del&gt;&lt;/a&gt; Skip parsing for tenantIds if multitenancy disabled&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d12e38e18857307e369c23dde1873b54666d6ae3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d12e38e18857307e369c23dde1873b54666d6ae3&lt;/a&gt;&lt;/p&gt;</comment>
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