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    <title>MongoDB Jira</title>
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    <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>[DRIVERS-2781] Add option to configure DEK cache lifetime</title>
                <link>https://jira.mongodb.org/browse/DRIVERS-2781</link>
                <project id="10980" key="DRIVERS">Drivers</project>
                    <description>&lt;div class=&quot;panel&quot; style=&quot;background-color: #fafbfc;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #fafbfc;&quot;&gt;
&lt;h3&gt;&lt;a name=&quot;Summary&quot;&gt;&lt;/a&gt;&lt;b&gt;Summary&lt;/b&gt;&lt;/h3&gt;

&lt;p&gt;Add option to configure DEK cache lifetime.&lt;/p&gt;
&lt;h3&gt;&lt;a name=&quot;Motivation&quot;&gt;&lt;/a&gt;&lt;b&gt;Motivation&lt;/b&gt;&lt;/h3&gt;

&lt;p&gt;At present, libmongocrypt caches the decrypted DEK for a fixed lifetime of &lt;a href=&quot;https://github.com/mongodb/libmongocrypt/blob/a747a820793180c213767f10bb1f9abfdca12b1e/src/mongocrypt-cache-private.h#L23&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;1 minute&lt;/a&gt;. There is a report of observed errors decrypting DEKs with KMS on heavy load. This may be due to the high rate of KMS requests. Adding an option to increase the lifetime may help these use cases reduce the rate of KMS requests.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Whoistheaffectedenduser%3F&quot;&gt;&lt;/a&gt;Who is the affected end user?&lt;/h4&gt;

&lt;p&gt;Users of In-Use Encryption (CSFLE and/or QE) with heavy workloads requiring many KMS requests.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Howdoesthisaffecttheenduser%3F&quot;&gt;&lt;/a&gt;How does this affect the end user?&lt;/h4&gt;

&lt;p&gt;May result in more KMS requests than desired on heavy load. There is a report of observed errors decrypting DEKs with KMS on heavy load.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Howlikelyisitthatthisproblemorusecasewilloccur%3F&quot;&gt;&lt;/a&gt;How likely is it that this problem or use case will occur?&lt;/h4&gt;

&lt;p&gt;Likely. There is a report of observed errors decrypting DEKs with KMS on heavy load. The high rate of KMS requests is the presumed cause.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-5297&quot; title=&quot;ClientEncryption encrypt/decrypt KMS key caching&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-5297&quot;&gt;JAVA-5297&lt;/a&gt; notes errors observed for Azure KMS requests that may benefit from a configurable DEK cache timeout.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Iftheproblemdoesoccur%2Cwhataretheconsequencesandhowseverearethey%3F&quot;&gt;&lt;/a&gt;If the problem does occur, what are the consequences and how severe are they?&lt;/h4&gt;

&lt;p&gt;Application errors.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Isthisissueurgent%3F&quot;&gt;&lt;/a&gt;Is this issue urgent?&lt;/h4&gt;

&lt;p&gt;Not sure.&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Isthisticketrequiredbyadownstreamteam%3F&quot;&gt;&lt;/a&gt;Is this ticket required by a downstream team?&lt;/h4&gt;

&lt;p&gt;No?&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;Isthisticketonlyfortests%3F&quot;&gt;&lt;/a&gt;Is this ticket only for tests?&lt;/h4&gt;

&lt;p&gt;No.&lt;/p&gt;
&lt;h3&gt;&lt;a name=&quot;AcceptanceCriteria&quot;&gt;&lt;/a&gt;&lt;b&gt;Acceptance Criteria&lt;/b&gt;&lt;/h3&gt;

&lt;p&gt;Update libmongocrypt to enable configuring the DEK cache lifetime.&lt;br/&gt;
Add API to drivers to enable configuring the DEK cache lifetime.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;</description>
                <environment></environment>
        <key id="2509481">DRIVERS-2781</key>
            <summary>Add option to configure DEK cache lifetime</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Mon, 27 Nov 2023 15:11:14 +0000</created>
                <updated>Tue, 30 Jan 2024 21:21:57 +0000</updated>
                                                                <component>Client Side Encryption</component>
                                        <votes>1</votes>
                                    <watches>2</watches>
                                                                                                                    <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
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            <issuekey id="2553133">JAVA-5297</issuekey>
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