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New version Memcache

Last Updated: Mar 14, 2018

Background

ApsaraDB for Memcache (original version) uses distributed cache architecture. It guarantees service reliability but does not guarantee data reliability. When a service node fails you must push the Memcache system in the event of data loss. Because, Memcache does not provide a data persistence policy, which can cause major problems.

To serve our customers better, the Alibaba Cloud ApsaraDB team upgraded ApsaraDB for Memcache (on May 10, 2017) with advanced features including dual-node hot standby, data persistence, and backup recovery. The new Memcache offers you with complete database solutions covering disaster tolerance, recovery, monitoring, migration, and so on, without affecting service reliability.

Product forms comparison

  Module   New Version Memcache  Earlier Version Memcache
Distributed architecture Supported Supported
Data persistence guarantee Supported Not supported
Dual-node hot standby architecture Supported Not supported
Memcache protocol compatibility Fully compatible Fully compatible

Sales model comparison

The new version has more flexible sales models, and supports both Subscription and Pay-As-You-Go.

  Module   Later Version Memcache   Earlier Version Memcache
Subscription new purchase Supported Not supported
Subscription upgrade Supported Not supported
Subscription renewal Supported Not supported
Subscription renewal and configuration change Supported Not supported
Subscription automatic renewal Supported Not supported
Pay-As-You-Go new purchase Supported Supported
Pay-As-You-Go configuration change Supported Supported
Release of Pay-As-You-Go instances Supported Supported
Changing Pay-As-You-Go to Subscription Supported Not supported
Supported regions

New Memcache supports a wider range of regions, including major international regions and all regions in China.

International regions list

Region   Zone New Version Memcache   Old Version Memcache
Asia Pacific (Singapore) Asia Pacific 1 Zone A Supported Not supported
Japan Japan Zone A Supported Not supported
Germany (Frankfurt) Germany Zone A Supported Not supported
Southeast Asia Pacific 2 (Sydney) Australia Zone A Supported Not supported
Hong Kong Hong Kong Zone C Supported Not supported
US East US East 1 Zone A Supported Not supported
US (Silicon Valley) US West 1 Zone B Supported Supported

Regions in China

  Region   Zone   New Version Memcache   Old Version Memcache
East China 1 East China 1 Zone B Supported Supported
East China 1 Zone D Supported Supported
East China 1 Zone E Supported Supported
East China 2 East China 2 Zone A Supported Supported
East China 2 Zone B Supported Supported
South China 1 South China 1 Zone A Supported Supported
South China 1 Zone B Supported Supported
North China 1 North China 1 Zone B Supported Supported
North China 2 North China 2 Zone A Supported Supported
North China 2 Zone B Supported Supported
North China 2 Zone C Supported Supported

Functional modules comparison

New Memcache supports more functions, most of which are advanced database functions.

  Categories   Functions   New Version Memcache   Old Version Memcache
Backup recovery Full backup Supported Not supported
Backup recovery Supported Not supported
Clone instance Supported Not supported
Data flow operation Supported Simple command lines
Monitoring alarms Resource monitoring Supported Supported
Resource alarms Supported Supported
Data security Whitelist Supported Not supported
VPC Supported Supported
Whitelist password-free access Supported Supported
Password-free for multiple Memcache instances Supported Not supported

How can I manage and change the configuration of the earlier version ApsaraDB for Memcache?

A: You can continue managing earlier version ApsaraDB for Memcache instances in Alibaba Cloud console. Activated earlier version instances can be managed, changed in configuration, and released normally.

How can I purchase another earlier version ApsaraDB for Memcache instance?

A: The earlier version ApsaraDB for Memcache no longer supports purchasing new instances. You may only purchase a later version ApsaraDB for Memcache product.

Alibaba Cloud launched single-node ApsaraDB for Memcache in August 2017. The single-node product has the same price as the earlier version ApsaraDB for Memcache does. You can flexibly choose single-node or dual-node product formats to meet diverse business needs.

How can I upgrade an earlier version ApsaraDB for Memcache instance to the new version?

A: Currently ApsaraDB for Memcache does not support one-click upgrade from the earlier version to the new version.

To upgrade Memcache to the new version, you must purchase a new version instance, push data manually, direct your apps to the domain name of the new instance, and then release the earlier version instance.

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