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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>[DOCS-7583] Remove recommendation to use secondary read to distribute read load to replica sets</title>
                <link>https://jira.mongodb.org/browse/DOCS-7583</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The docs page at: &lt;a href=&quot;https://docs.mongodb.org/manual/reference/read-preference/#reduce-load-on-the-primary&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.org/manual/reference/read-preference/#reduce-load-on-the-primary&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;stated that:&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;To shift read load from the primary, use mode secondary. Although secondaryPreferred is tempting for this use case, it carries some risk: if all secondaries are unavailable and your set has enough arbiters to prevent the primary from stepping down, then the primary will receive all traffic from clients. If the primary is unable to handle this load, queries will compete with writes. For this reason, use secondary to distribute read load to replica sets, not secondaryPreferred.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Without a proper context regarding secondary read use cases, this is a misleading paragraph at best, and incorrect at worst. This is because:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;The secondaries are doing just as much writes as the primary. Shifting reads to the secondaries without a good reason compromises the replica set&apos;s high availability function.&lt;/li&gt;
	&lt;li&gt;The replica set overall could be burdened with more reads than what it could actually handle. When one node fails, the rest of the set could be flooded with reads that could bring down the whole set.&lt;/li&gt;
	&lt;li&gt;The secondaries are eventually consistent with the primary, so there is a chance that stale data is read.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;To make matters worse, this page: &lt;a href=&quot;https://docs.mongodb.org/manual/core/read-preference/#counter-indications&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.org/manual/core/read-preference/#counter-indications&lt;/a&gt; stated:&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;In general, do not use secondary and secondaryPreferred to provide extra capacity for reads&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;thus we are giving users conflicting information.&lt;/p&gt;</description>
                <environment></environment>
        <key id="277718">DOCS-7583</key>
            <summary>Remove recommendation to use secondary read to distribute read load to replica sets</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kevin.adistambha@mongodb.com">Kevin Adistambha</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Apr 2016 23:39:33 +0000</created>
                <updated>Mon, 30 Oct 2023 21:34:04 +0000</updated>
                                                            <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4941056" author="edu.bot" created="Mon, 31 Oct 2022 16:14:23 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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            <issuekey id="269133">DOCS-7315</issuekey>
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