RedisAvailabilityZones (#101)

docs/content/services/database/redis-cache/_index.md

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+title = "Redis Cache"
+description = "Best practices and resiliency recommendations for Redis Cache and associated resources and settings."
+date = "10/2/23"
+author = "ejhenry"
+msAuthor = "ejhenry"
+draft = false
++++
+
+The presented resiliency recommendations in this guidance include Redis Cache and associated resources and settings.
+
+## Summary of Recommendations
+
+{{< table style="table-striped" >}}
+| Recommendation                                    |  Category                                                               |  Impact         |  State            | ARG Query Available |
+| :------------------------------------------------ | :---------------------------------------------------------------------: | :------:        | :------:          | :-----------------: |
+| [REDIS-1 - Enable zone redundancy for Azure Cache for Redis](#redis-1---enable-zone-redundancy-for-azure-cache-for-redis) | High Availability | High | Preview  |         Yes         |
+{{< /table >}}
+
+{{< alert style="info" >}}
+
+Definitions of states can be found [here]({{< ref "../../../_index.md#definitions-of-terms-used-in-aprl">}})
+
+{{< /alert >}}
+
+## Recommendations Details
+
+### REDIS-1 - Enable zone redundancy for Azure Cache for Redis
+
+**Category: Availability**
+
+**Impact: High**
+
+**Recommendation/Guidance**
+
+Azure Cache for Redis supports zone redundancy in its Premium and Enterprise tiers. A zone-redundant cache runs on VMs spread across multiple Availability Zones. Zone redundancy provides higher resilience and availability.
+
+**Resources**
+
+- [Enable zone redundancy for Azure Cache for Redis](https://learn.microsoft.com/azure/azure-cache-for-redis/cache-how-to-zone-redundancy)
+
+**Resource Graph Query/Scripts**
+
+{{< collapse title="Show/Hide Query/Script" >}}
+
+{{< code lang="sql" file="code/redis-1/redis-1.kql" >}} {{< /code >}}
+
+{{< /collapse >}}
+
+<br><br>

docs/content/services/database/redis-cache/code/redis-1/redis-1.azcli

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+:: under-development

docs/content/services/database/redis-cache/code/redis-1/redis-1.kql

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+// Azure Resource Graph Query
+// Find Cache for Redis instances with one or no Zones selected
+resources
+| where type == "microsoft.cache/redis"
+| where array_length(zones) <= 1 or isnull(zones)
+| project recommendationId = "redis-1", name, id, param1 = "AvailabilityZones: Single Zone"
+| order by id asc

docs/content/services/database/redis-cache/code/redis-1/redis-1.ps1

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+# under-development