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AWS RDS failover with read replica instances

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I have few questions about AWS RDS disaster recovery when read replication is enabled.

  1. What happens when an AWS RDS database has read replication instances configured (in same and different AZ's) and the primary instance goes down, does one of the replication instances becomes primary, also what happens to the ongoing read/write operations?
  2. How the failover takes place when cross-region replication has been configured?
  3. Is the failover process being same for all kind of RDS databases?
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AnalyseMigration et modernisationBase de données
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Amazon Relational Database ServiceBase de données
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English
demandé il y a 2 ans1 k vues
1 réponse
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Réponse acceptée

Hi,

The processed is detailled for Aurora instances in https://dev.to/aws-builders/doing-failover-in-amazon-aurora-read-replica-with-the-highest-priority-4okb

Best,

Didier

EXPERT
répondu il y a 2 ans
EXPERT
vérifié il y a 2 ans
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vérifié il y a 2 ans
  • Susmita Sarkar
    il y a 2 ans

    I suppose this is for Amazon Aurora databases, is it same for all the RDS supported databases, Like Oracle /MySQL/MSSQL?

  • Didier Durand EXPERT
    il y a 2 ans

    Hi, externally (i.e from a user standpoint like you and me). yes. Internally, it's of course dependent of the specific architecture of each dbms. But, those differences are not surfaced.

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