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    <title>MongoDB Jira</title>
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    <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>[DOCS-5011] Add note on experimental in-memory storage engine</title>
                <link>https://jira.mongodb.org/browse/DOCS-5011</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;Some of the press activity and 3.0 talks mention the experimental in-memory storage engine but there is no info in docs on how to test this out.&lt;/p&gt;

&lt;p&gt;The current implication is that mmapv1 and wiredTiger are the only valid storage options: &lt;a href=&quot;http://docs.mongodb.org/manual/reference/configuration-options/#storage.engine&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/reference/configuration-options/#storage.engine&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;We should add a note with appropriate caveats on usage:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;An experimental in-memory storage engine is included in MongoDB 3.0 for development &amp;amp; testing purposes. You can try this out with a &lt;tt&gt;storage.engine&lt;/tt&gt; value of &quot;inMemoryExperiment&quot;.&lt;/p&gt;&lt;/blockquote&gt;</description>
                <environment></environment>
        <key id="189677">DOCS-5011</key>
            <summary>Add note on experimental in-memory storage engine</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="stephen.steneker@mongodb.com">Stennie Steneker</reporter>
                        <labels>
                            <label>storage</label>
                    </labels>
                <created>Mon, 16 Mar 2015 05:58:40 +0000</created>
                <updated>Wed, 11 Jan 2017 22:32:23 +0000</updated>
                            <resolved>Thu, 15 Oct 2015 09:56:50 +0000</resolved>
                                    <version>mongodb-3.0</version>
                                    <fixVersion>01112017-cleanup</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>2</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1061297" author="stennie" created="Thu, 15 Oct 2015 09:56:50 +0000"  >&lt;p&gt;The in-memory experiment in 3.0 is an unsupported and rather quick prototype that isn&apos;t a fully formed feature. This is entirely different to the production inMemory storage engine under development for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1153&quot; title=&quot;Create an in-memory only storage engine&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1153&quot;&gt;&lt;del&gt;SERVER-1153&lt;/del&gt;&lt;/a&gt;, which will be properly documented when the feature is ready for testing.&lt;/p&gt;

&lt;p&gt;Closing this issue to avoid conflating the two approaches.&lt;/p&gt;</comment>
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