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

When you purchase ApsaraDB for Redis instances, you can select local disk-based or cloud disk-based instances to meet the requirements of different business scenarios. This topic compares these two types of instances.

Overview

Item	Cloud disk-based instance (recommended)	Local disk-based instance
Architecture	Uses the new-generation management architecture that offers greater flexibility and enhanced scalability. This architecture serves as a basis for subsequent development.	Uses the conventional management architecture. Cluster instances come with predefined specifications that cannot be changed.
Scalability	Cloud disk-based instances provide higher scalability than 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 a minimum step size of 1. Additionally, a data shard can be scaled up or down. This capability allows you to effectively address various requirements for performance and capacity in different scenarios. You can change the number of read replicas in a read/write splitting instance within the range of 1 to 9.	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. The number of read replicas in a read/write splitting instance is fixed at 1, 3, or 5.

Feature comparison

Cloud disk-based instances are built on cloud-native architecture. Cloud disk-based instances that use the cluster architecture support imperceptible scaling. Redis embraces cloud-native architecture 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 instance	➖	❌	➖	➖	✔️	➖
Lifecycle management	Specify a custom number of read replicas	➖	➖	❌	➖	➖	✔️
Bandwidth management	Enable bandwidth auto scaling	✔️	✔️	✔️	❌	❌	❌
Extended features	Global Distributed Cache	✔️	✔️	✔️	❌	❌	❌

All features

Category	Feature	Local disk-based instance			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 an instance	✔️	✔️	✔️	✔️	✔️	✔️
	Change the billing method to subscription	✔️	✔️	✔️	✔️	✔️	✔️
	Change the billing method to pay-as-you-go	✔️	✔️	✔️	✔️	✔️	✔️
	Renewal	✔️	✔️	✔️	✔️	✔️	✔️
	Adjust the number of shards for an instance	➖	❌	➖	➖	✔️	➖
	Specify a custom number of read replicas	➖	➖	❌	➖	➖	✔️
	Upgrade the major version	✔️	✔️	✔️	✔️	✔️	✔️
	Update the minor version of an instance	✔️	✔️	✔️	✔️	✔️	✔️
	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	Manually increase the bandwidth of an 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	Configure instance parameters	✔️	✔️	✔️	✔️	✔️	✔️
Tag management	Create tags	✔️	✔️	✔️	✔️	✔️	✔️
Management of maintenance, migration, and data export	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 for an instance	✔️	✔️	✔️	✔️	✔️	✔️
Performance monitoring	View performance monitoring data	✔️	✔️	✔️	✔️	✔️	✔️
	Alert settings	✔️	✔️	✔️	✔️	✔️	✔️
	Performance trends	✔️	✔️	✔️	✔️	✔️	✔️
	View performance metrics in real time	✔️	✔️	✔️	✔️	✔️	✔️
	Manage 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	✔️	✔️	✔️	✔️	✔️	✔️
	Query 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 features	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	✔️	✔️	✔️	✔️	✔️	✔️

Supported instance series, engine versions, and architectures

Instance and its creation method	Supported instance edition and series type	Supported engine version	Supported architecture
Local disk-based instance Create a local disk-based instance	ApsaraDB for Redis Community Edition	5.0 4.0	Cluster architecture Standard architecture Read/write splitting architecture
	Enhanced Edition (Tair) DRAM-based instances	5.0	Cluster architecture Standard architecture Read/write splitting architecture
Cloud disk-based instance Create an ApsaraDB for Redis cloud disk-based instance	ApsaraDB for Redis Community Edition	7.0 6.0 5.0	Standard architecture Cluster architecture Read/write splitting architecture
	Enhanced Edition (Tair) DRAM-based instances	6.0 5.0	Standard architecture Cluster architecture Read/write splitting architecture
	Enhanced Edition (Tair) persistent memory-optimized instances	6.0	Standard architecture Cluster architecture Read/write splitting architecture
	Enhanced Edition (Tair) ESSD-based instances	4.0	Standard architecture