
    RDS Proxy can significantly improve planned failover times for Amazon RDS Multi-AZ DB instance deployments, reducing downtime by up to 4.9X during operations like instance modifications, OS upgrades, and forced failovers.


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This article discusses how Amazon RDS Proxy can improve planned failover times for Multi-AZ database deployments across MySQL, MariaDB, and PostgreSQL.
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<li>RDS Proxy eliminates the 35-second DNS propagation delay during failovers</li>
<li>Optimizations were made to reduce downtime during different maintenance operations</li>
<li>Benchmarking showed significant improvements in failover performance:</li>
<ul>
<li>Up to 4.9X reduction in instance class modification downtime</li>
<li>Up to 4.8X reduction in OS upgrade downtime</li>
<li>Up to 3X reduction in forced failover downtime</li>
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The improvements are automatically available for RDS MySQL, MariaDB, and PostgreSQL instances, requiring no additional configuration from users.
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