Comparison between classic instances and cloud-native instances - ApsaraDB for Redis

When you purchase ApsaraDB for Redis instances, you can select classic (local disk-based) or cloud-native (cloud disk-based) instances to meet the requirements of different business scenarios. This topic compares classic instances and cloud-native instances.

Overview

Item	Cloud-native (cloud disk-based) instance (recommended)	Classic (local disk-based) instance
Architecture	Uses the new-generation Tair management architecture. Note This architecture serves as a basis for subsequent development.	Uses the conventional Tair management architecture that comes with a complete set of features.
Scalability	The scale-out capability is better than that of classic (local disk-based) instances. No transient connections occur when you scale out a cluster instance. You can change the number of data shards in a cluster instance within the range of 2 to 256 and with the minimum step size of 1. Additionally, a data shard can be scaled up or down. This meets various requirements for performance and capacity. You can change the number of read replicas in a read/write splitting instance within the range of 1 to 5.	A scale-out consumes more time. Transient connections occur when you scale out a cluster instance. In a scale-out, you can only double the number of data shards in a cluster instance. For example, if the original cluster instance has two shards, you can scale the instance to four or eight shards. You cannot change the number of read replicas in a read/write splitting instance that is fixed at 1, 3, or 5.

Feature comparison

Cloud-native (cloud disk-based) instances that use the cluster architecture support the imperceptible scaling feature. The cloud-native (cloud disk-based) deployment mode serves as the primary basis for subsequent development.

In the following table, ✔️ indicates that this feature is supported, ❌ indicates that this feature is not supported, and ➖ indicates that this feature is not applicable.

Differences

Category	Feature	Classic (local disk-based) instance			Cloud-native (cloud disk-based) instance
Category	Feature	Standard architecture	Cluster architecture	Read/write splitting architecture	Standard architecture	Cluster architecture	Read/write splitting architecture
Lifecycle management	Adjust the number of shards for an ApsaraDB for Redis instance with cloud disks	➖	❌	➖	➖	✔️	➖
Lifecycle management	Enable read/write splitting	➖	➖	❌	➖	➖	✔️
Network connection management	Enable the direct connection mode	➖	✔️	➖	➖	✔️	➖
Bandwidth management	Enable bandwidth auto scaling	✔️	✔️	✔️	❌	❌	❌
Bandwidth management	Adjust the bandwidth of an ApsaraDB for Redis instance	✔️	✔️	✔️	❌	❌	❌
Security management	Enable the release protection feature	✔️	✔️	✔️	❌	❌	❌
Log management	Enable the audit log feature	✔️	✔️	✔️	✔️	❌	❌
Extended feature	Global Distributed Cache	✔️	✔️	✔️	❌	❌	❌

All features

Category	Feature	Classic (local disk-based) instance			Cloud-native (cloud disk-based) instance
Category	Feature	Standard architecture	Cluster architecture	Read/write splitting architecture	Standard architecture	Cluster architecture	Read/write splitting architecture
Lifecycle management	Change the configurations of an instance	✔️	✔️	✔️	✔️	✔️ Supports imperceptible scaling.	✔️
	Restart one or more ApsaraDB for Redis instances	✔️	✔️	✔️	✔️	✔️	✔️
	Change the billing method to subscription	✔️	✔️	✔️	✔️	✔️	✔️
	Change the billing method to pay-as-you-go	✔️	✔️	✔️	✔️	✔️	✔️
	Renewal	✔️	✔️	✔️	✔️	✔️	✔️
	Adjust the number of data shards for an ApsaraDB for Redis instance with cloud disks	➖	❌	➖	➖	✔️	➖
	Enable read/write splitting	➖	➖	❌	➖	➖	✔️
	Update the minor version	✔️	✔️	✔️	✔️	✔️	✔️
	Release pay-as-you-go instances	✔️	✔️	✔️	✔️	✔️	✔️
	Unsubscribe from subscription instances	❌	❌	❌	❌	❌	❌
	Manage instances in the recycle bin	✔️	✔️	✔️	✔️	✔️	✔️
Network connection management	Change the VPC or vSwitch of an instance	✔️	✔️	✔️	✔️	✔️	✔️
	Apply for a public endpoint for an ApsaraDB for Redis instance	✔️	✔️	✔️	✔️	✔️	✔️
	Enable the direct connection mode	➖	✔️	➖	➖	✔️	➖
	Change the endpoint or port number of an instance	✔️	✔️	✔️	✔️	✔️	✔️
Bandwidth management	Enable bandwidth auto scaling	✔️	✔️	✔️	❌	❌	❌
Bandwidth management	Adjust the bandwidth of an ApsaraDB for Redis instance	✔️	✔️	✔️	❌	❌	❌
High availability management	Manually switch workloads from a master node to a replica node	✔️	✔️	✔️	✔️	✔️	✔️
	Restart or rebuild a proxy node	➖	✔️	✔️	➖	✔️	✔️
	Upgrade proxy nodes	➖	✔️	✔️	➖	✔️	✔️
Parameter management	Modify the values of parameters for an instance	✔️	✔️	✔️	✔️	✔️	✔️
Tag management	Create tags	✔️	✔️	✔️	✔️	✔️	✔️
Other management	Set a maintenance window	✔️	✔️	✔️	✔️	✔️	✔️
	Migrate an instance across zones	✔️	✔️	✔️	✔️	✔️	✔️
	Export the instance list	✔️	✔️	✔️	✔️	✔️	✔️
Security management	Create and manage database accounts	✔️	✔️	✔️	✔️	✔️	✔️
	Change or reset the password	✔️	✔️	✔️	✔️	✔️	✔️
	Configure whitelists	✔️	✔️	✔️	✔️	✔️	✔️
	Configure an IP whitelist template	✔️	✔️	✔️	✔️	✔️	✔️
	Enable TLS encryption	✔️	✔️	✔️	✔️	✔️	✔️
	Enable password-free access	✔️	✔️	✔️	✔️	✔️	✔️
	Enable the release protection feature	✔️	✔️	✔️	❌	❌	❌
Performance monitoring	View monitoring data	✔️	✔️	✔️	✔️	✔️	✔️
	Alerting settings	✔️	✔️	✔️	✔️	✔️	✔️
	Performance trends	✔️	✔️	✔️	✔️	✔️	✔️
	View performance metrics in real time	✔️	✔️	✔️	✔️	✔️	✔️
	Instance sessions	✔️	✔️	✔️	✔️	✔️	✔️
	Slow queries	✔️	✔️	✔️	✔️	✔️	✔️
	Latency insights	✔️	✔️	✔️	✔️	✔️	✔️
	Use the offline key analysis feature	✔️	✔️	✔️	✔️	✔️	✔️
	Use the real-time key statistics feature	✔️	✔️	✔️	✔️	✔️	✔️
	Create a diagnostic report	✔️	✔️	✔️	✔️	✔️	✔️
Log management	Enable the audit log feature	✔️	✔️	✔️	✔️	❌	❌
	View slow logs	✔️	✔️	✔️	✔️	✔️	✔️
	View active logs	✔️	✔️	✔️	✔️	✔️	✔️
Backup and restoration	Automatic or manual backup	✔️	✔️	✔️	✔️	✔️	✔️
	Download a backup file	✔️	✔️	✔️	✔️	✔️	✔️
	Use data flashback to restore data by point in time	✔️	✔️	✔️	✔️	✔️	✔️
	Restore data from a backup set to a new instance	✔️	✔️	✔️	✔️	✔️	✔️
Extended feature	Global Distributed Cache	✔️	✔️	✔️	❌	❌	❌
	Use proxy query cache to address issues caused by hotkeys	➖	✔️	✔️	➖	✔️	✔️
	Extended data structures of ApsaraDB for Redis Enhanced Edition (Tair)	✔️	✔️	✔️	✔️	✔️	✔️
	Multi-threading model	✔️	✔️	✔️	✔️	✔️	✔️