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    <title>Magnolia - Issue tracker</title>
    <link>https://jira.magnolia-cms.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-uk</language>    <build-info>
        <version>9.4.2</version>
        <build-number>940002</build-number>
        <build-date>19-01-2023</build-date>
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<item>
            <title>[ABTEST-99] Research options to reduce AWS cost</title>
                <link>https://jira.magnolia-cms.com/browse/ABTEST-99</link>
                <project id="16583" key="ABTEST">A/B Testing</project>
                    <description>&lt;p&gt;One idea is to group of events together and send them in batch to reduce API Gateway cost down. One API Gateway call per visitor might not scale well pricing-wise.&lt;/p&gt;

&lt;p&gt;Another idea is to replace DynamoDB with AWS Timestream for the events and S3 for the aggregated data (timeline and conversions), which could help cutting infrastructure cost.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;AC&lt;/p&gt;</description>
                <environment></environment>
        <key id="81161">ABTEST-99</key>
            <summary>Research options to reduce AWS cost</summary>
                <type id="3" iconUrl="https://jira.magnolia-cms.com/secure/viewavatar?size=xsmall&amp;avatarId=10898&amp;avatarType=issuetype">Task</type>
                                            <priority id="4" iconUrl="https://jira.magnolia-cms.com/images/icons/priorities/minor.svg">Minor</priority>
                        <status id="1" iconUrl="https://jira.magnolia-cms.com/images/icons/statuses/open.png" description="The issue is open and ready for the assignee to start work on it.">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="ilgun">Ilgun Ilgun</reporter>
                        <labels>
                    </labels>
                <created>Fri, 8 Nov 2019 11:19:01 +0100</created>
                <updated>Fri, 26 Aug 2022 13:03:02 +0200</updated>
                                                                                <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="203741" author="efochr" created="Tue, 26 Nov 2019 15:06:24 +0100"  >&lt;p&gt;Pricing according to latest data:&lt;br/&gt;
S3&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;storage 0.023$ /GB first 50G ....&lt;/li&gt;
	&lt;li&gt;PUT, COPY, POST, LIST requests (per 1,000 requests) - $0.005 (that mean 5$ per 1M requests)&lt;/li&gt;
	&lt;li&gt;GET, SELECT, and all other requests (per 1,000 requests) - $0.0004 (that mean 0.4 per 1M requests)&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Dynamo&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;storage first 25g stored per month is free, $0.25 per GB-month thereafter&lt;/li&gt;
	&lt;li&gt;Write request units	$1.25 per million write request units&lt;/li&gt;
	&lt;li&gt;Read request units	$0.25 per million read request units&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Reducing dynamo write requests &lt;br/&gt;
We can use TransactWriteItems which can contain up to 10 items and is counted as 2 write requests. That means with correct implementation we will get to $0.25 per 1M written rows&lt;/p&gt;

&lt;p&gt;Reducing storage cost of dynamo&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;events per test are exported to file and stored in s3
	&lt;ul&gt;
		&lt;li&gt;after we do daily summary&lt;/li&gt;
		&lt;li&gt;or after we archive test in magnolia&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;whipped out completely and only test results are left in dynamo&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Data transfer price - same for both services&lt;/p&gt;

&lt;p&gt;For total size of dynamoDB item we can do computation &lt;a href=&quot;https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/CapacityUnitCalculations.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/CapacityUnitCalculations.html&lt;/a&gt; !!! READ THE NOTE !!!&lt;/p&gt;</comment>
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            <issuekey id="96647">ABTEST-411</issuekey>
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