To continuously enhance the stability and performance of the Global Database Network (GDN) feature in PolarDB for MySQL, we will optimize the underlying network architecture for certain cross-region data synchronization scenarios and begin charging network fees accordingly. Please find the details below:

Effective Date: April 1, 2026 (Singapore Time, GMT+8)

Affected Feature: PolarDB for MySQL – Global Database Network (GDN)

Scenarios Subject to Network Fees

• Scenario 1: Primary cluster in Chinese Mainland, secondary cluster outside Chinese Mainland

(e.g., Chinese Mainland → China (Hong Kong), Singapore, etc.)

• Scenario 2: Primary cluster outside Chinese Mainland, secondary cluster in Chinese Mainland

(e.g., Singapore → Chinese Mainland)

Scenarios Not Subject to Network Fees

• Scenario 1: Both primary and secondary clusters located within Chinese Mainland

(e.g., China (Chengdu) → China (Shenzhen))

• Scenario 2: Both primary and secondary clusters outside Chinese Mainland

(e.g., Singapore → Philippines (Manila))

Impact Summary

• Existing GDN Instances: If you already use GDN, any new secondary clusters added on or after the effective date that fall under the above fee-applicable scenarios will incur network charges based on actual traffic. Existing replication links will remain unaffected aand will not incur additional fees.
• New Purchases: For new GDN instances created on or after the effective date, pay-as-you-go network fees will apply if they meet the fee-applicable criteria. Please refer to upcoming official documentation for specific pricing standards.

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