Availability zones support in Azure Web PubSub Service
Azure Web PubSub Service uses Azure availability zones to provide high availability and fault tolerance within an Azure region.
Note
Zone redundancy is a Premium tier feature. It is implicitly enabled when you create or upgrade to a Premium tier resource. Standard tier resources can be upgraded to Premium tier without downtime.
Zone redundancy
Zone-enabled Azure regions (not all regions support availability zones) have a minimum of three availability zones. A zone is one or more datacenters, each with its own independent power and network connections. All the zones in a region are connected by a dedicated low-latency regional network. If a zone fails, Azure Web PubSub Service traffic running on the affected zone is routed to other zones in the region.
Azure Web PubSub Service uses availability zones in a zone-redundant manner. Zone redundancy means the service isn't constrained to run in a specific zone. Instead, total service is evenly distributed across multiple zones in a region. Zone redundancy reduces the potential for data loss and service interruption if one of the zones fails.
Next steps
- Learn more about regions that support availability zones.
- Learn more about designing for reliability in Azure.
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