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AWS-SAA-C02-Study-Guide
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Mert Nuhuz 2022-05-05 17:17:46 +03:00 committed by GitHub
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@ -898,7 +898,7 @@ DB instances that are encrypted can't be modified to disable encryption.
Aurora is the AWS flagship DB known to combine the performance and availability of traditional enterprise databases with the simplicity and cost-effectiveness of open source databases. It is a MySQL/PostgreSQL-compatible RDBMS that provides the security, availability, and reliability of commercial databases at 1/10th the cost of competitors. It is far more effective as an AWS database due to the 5x and 3x performance multipliers for MySQL and PostgreSQL respectively.
### Aurora Key Details:
- In case of an infrastructure failure, Aurora performs an automatic failover to to a replica of its own.
- In case of an infrastructure failure, Aurora performs an automatic failover to a replica of its own.
- Amazon Aurora typically involves a cluster of DB instances instead of a single instance. Each connection is handled by a specific DB instance. When you connect to an Aurora cluster, the host name and port that you specify point to an intermediate handler called an endpoint. Aurora uses the endpoint mechanism to abstract these connections. Thus, you don't have to hard code all the host names or write your own logic for load-balancing and rerouting connections when some DB instances aren't available.
- By default, there are 2 copies in a minimum of 3 availability zones for 6 copies total for all of your Aurora data. This makes it possible for it to handle the potential loss of up to 2 copies of your data without impacting write availability and up to 3 copies of your data without impacting read availability.
- Aurora storage is self-healing and data blocks and disks are continuously scanned for errors. If any are found, those errors are repaired automatically.