AuroraDB – 5x better performance than standard MYSQL
Aurora on Amazon RDS
Amazon Aurora is a fully-managed, MySQL-compatible, relational database engine that combines the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open-source databases. It delivers up to five times the performance of MySQL without requiring changes to most of your existing applications.
Amazon Aurora makes it simple and cost-effective to set up, operate, and scale your new and existing MySQL deployments, thus freeing you to focus on your business and applications. Amazon RDS provides administration for Amazon Aurora by handling routine database tasks such as provisioning, patching, backup, recovery, failure detection, and repair. Amazon RDS also provides push-button migration tools to convert your existing Amazon RDS for MySQL applications to Amazon Aurora.
Amazon Aurora is a drop-in replacement for MySQL. The code, tools and applications you use today with your existing MySQL databases can be used with Amazon Aurora.
When you create an Amazon Aurora instance, you create a DB cluster. A DB cluster consists of one or more instances, and a cluster volume that manages the data for those instances. An Aurora cluster volume is a virtual database storage volume that spans multiple Availability Zones, with each Availability Zone having a copy of the cluster data. Two types of instances make up an Aurora DB cluster:
- Primary instance – Supports read-write workloads, and performs all of the data modifications to the cluster volume. Each Aurora DB cluster has one primary instance.
- Aurora Replica – Supports only read operations. Each DB cluster can have up to 15 Aurora Replicas in addition to the primary instance, which supports both read and write workloads. Multiple Aurora Replicas distribute the read workload, and by locating Aurora Replicas in separate Availability Zones you can also increase database availability.
The following diagram illustrates the relationship between the Amazon Aurora cluster volume and the primary and Aurora Replicas in the Aurora DB cluster.
More details at : http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Aurora.html?mkt_tok=3RkMMJWWfF9wsRomrfCcI63Em2iQPJWpsrB0B%2FDC18kX3RUsJLycbQfind1SFJk7a8C6XFpJQN1K9i0VQ7HM