Writing to Amazon Aurora with multi-master capabilities

Amazon Aurora is the most reliable relational database engine developed by Amazon to deliver speed in a simple and cost-effective manner. Aurora uses a cluster of single primary instances and zero or more replicas. Aurora’s replicas can give you the advantage of both read replicas and Multi-AZ instances in RDS. Aurora uses a shared cluster volume for storage and is available to all compute instances of the cluster (a maximum of 64 TiB). This allows the Aurora cluster to provision faster and improves availability and performance. Aurora uses SSD-based storage, which provides high IOPS and low latency. Aurora does not ask you to allocate storage, unlike other RDS instances; it is based on the storage that you use.

Aurora clusters have multiple endpoints, including the cluster endpoint and reader endpoint. If there are zero replicas, then the cluster endpoint is the same as the reader endpoint. If there are replicas available...