How does Amazon Keyspaces (for Apache Cassandra) compare to Apache Cassandra?
To establish a connection to Amazon Keyspaces, you can either use a public AWS service endpoint or a private endpoint using Interface VPC endpoints (AWS PrivateLink) in the Amazon Virtual Private Cloud . Depending on the endpoint used, Amazon Keyspaces can appear to the client in one of the following ways.
- AWS service endpoint connection
This is a connection established over any public endpoint. In this case, Amazon Keyspaces appears as a nine-node Apache Cassandra 3.11.2 cluster to the client.
- Interface VPC endpoint connection
This is a private connection established using an interface VPC endpoint. In this case, Amazon Keyspaces appears as a three-node Apache Cassandra 3.11.2 cluster to the client.
Independent of the connection type and the number of nodes that are visible to the client, Amazon Keyspaces provides virtually limitless throughput and storage. To do this, Amazon Keyspaces maps the nodes to load balancers that route your queries to one of the many underlying storage partitions. For more information about connections, see How connections work in Amazon Keyspaces.
Amazon Keyspaces stores data in partitions. A partition is an allocation of storage for a table,
backed by solid state drives (SSDs). Amazon Keyspaces automatically replicates your data across
multiple Availability Zones
Amazon Keyspaces supports all commonly used Cassandra data-plane operations, such as creating keyspaces and tables, reading data, and writing data. Amazon Keyspaces is serverless, so you don’t have to provision, patch, or manage servers. You also don’t have to install, maintain, or operate software. As a result, in Amazon Keyspaces you don't need to use the Cassandra control plane API operations to manage cluster and node settings.
Amazon Keyspaces automatically configures settings such as replication factor and consistency level to provide you with high availability, durability, and single-digit-millisecond performance. For even more resiliency and low-latency local reads, Amazon Keyspaces offers multi-Region replication.
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