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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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<item>
            <title>[SERVER-2932] Create capped collections automatically at the first insertion</title>
                <link>https://jira.mongodb.org/browse/SERVER-2932</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Is it possible creating capped collections automatically at the first&lt;br/&gt;
insertion?&lt;/p&gt;

&lt;p&gt;I receive some &quot;packets&quot; from a client. This data contains a name as&lt;br/&gt;
the first field. I don&apos;t know all these names &quot;a priori&quot;, but I&apos;d like&lt;br/&gt;
storing those data in capped collection (size is known).  As far as I&lt;br/&gt;
know, if I db.insert(&quot;name&quot;) I&apos;ll create a no-capped collection... can&lt;br/&gt;
I change such behaviour?  I&apos;d like to avoid checks for existing tables&lt;br/&gt;
before storing (I can receive thousand of packets with the same name&lt;br/&gt;
and this check is unreasonable...).&lt;/p&gt;</description>
                <environment>Win32 C++ (VS2008)</environment>
        <key id="16071">SERVER-2932</key>
            <summary>Create capped collections automatically at the first insertion</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="downwind">Giorgio Merlini</reporter>
                        <labels>
                    </labels>
                <created>Tue, 12 Apr 2011 13:38:44 +0000</created>
                <updated>Fri, 15 Feb 2013 15:06:33 +0000</updated>
                            <resolved>Tue, 18 Sep 2012 04:53:10 +0000</resolved>
                                                                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="165338" author="eliot" created="Tue, 18 Sep 2012 04:53:05 +0000"  >&lt;p&gt;No way to do that, but you can convert later, and if its is small (i.e. check 1/1000 times) then converting will be very fast.&lt;/p&gt;</comment>
                            <comment id="28813" author="downwind" created="Tue, 12 Apr 2011 14:33:31 +0000"  >&lt;p&gt;I agree. Unfortunately I haven&apos;t this information at startup and create capped collection before insertion means checking whether collection exists for each incoming data.&lt;br/&gt;
Of course I can solve this programmatically; just wondering whether such feature can be interesting...&lt;br/&gt;
About additional information (in case this feature is implemented):  a Connection.SetDefaultTableCreationOption() or similar can be implemented.&lt;/p&gt;

&lt;p&gt;In any case: thanks for your attention in this request&lt;/p&gt;</comment>
                            <comment id="28810" author="scotthernandez" created="Tue, 12 Apr 2011 14:19:51 +0000"  >&lt;p&gt;If you know the name of the collection then you should create the capped collection before you insert data. By default collections are created non-capped since creating them as capped collections would require more information than is available during an insert/save.&lt;/p&gt;</comment>
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