Redis cache should have a backup

Replicate Redis Cache server data to another Redis Cache server using geo replication. This feature is only available for Premium tier Redis Cache. From performance point of view, Microsoft recommends that both Redis Caches (Primary and the linked secondary) reside in the same region.

Risk Level: Low
Cloud Entity: Azure Redis Cache
CloudGuard Rule ID: D9.AZU.DR.01
Covered by Spectral: Yes
Category: Database


RedisCache should have linkedServers contain-any [ linkedRedisCacheServerRole='Secondary' ]


From Portal

  1. Go to Azure Cache for Redis.
  2. For each Redis Cache: make sure you have at least 2 Redis Caches in Premium tier.
  3. Click on 'Geo-replication' under 'settings'.
  4. Click Add cache replication link
  5. Click the name of the desired secondary cache from the Compatible caches list.
  6. Click the 3 dots on the right to open the context menu.
  7. Select Link as secondary.
  8. Select Save.

From TF
Set the 'replicas_per_master' argument under 'azurerm_redis_cache':

resource "azurerm_redis_cache" "example" {
	replicas_per_master = NUMBEROFREPLICAS

From Command Line

az redis create --location LOCATION --name REDISCACHENAME --resource-group RESOURCEGROUP --sku Premium --vm-size p1 --zones 1 2 --replicas-per-master NUMBEROFREPLICAS



Azure Redis Cache

Fully managed, open source���compatible in-memory data store to power fast, scalable application. Azure Redis Cache is based on the popular open-source Redis cache. It is typically used as a cache to improve the performance and scalability of systems that rely heavily on backend data-stores. Performance is improved by temporarily copying frequently accessed data to fast storage located close to the application. With Redis cache, this fast storage is located in-memory with Redis Cache instead of being loaded from disk by a dat

Compliance Frameworks

  • Azure CSA CCM v.3.0.1
  • Azure CSA CCM v.4.0.1
  • Azure CloudGuard Best Practices
  • Azure CloudGuard CheckUp
  • Azure CloudGuard SOC2 based on AICPA TSC 2017
  • Azure HIPAA
  • Azure ISO 27001:2013
  • Azure ITSG-33
  • Azure NIST 800-53 Rev 4
  • Azure NIST 800-53 Rev 5
  • Azure NIST CSF v1.1
  • Azure PCI-DSS 3.2
  • CloudGuard Azure All Rules Ruleset