| title | Azure Web PubSub limits table |
|---|---|
| description | Describes system limits for Azure Web PubSub Service. |
| services | azure-web-pubsub |
| author | jixin |
| manager | kenchen |
| ms.service | azure-web-pubsub |
| ms.topic | include |
| ms.date | 12/22/2023 |
| ms.author | JialinXin |
| Resource | Default limit | Maximum limit |
|---|---|---|
| Azure Web PubSub Service units per instance for Free tier | 1 | 1 |
| Azure Web PubSub Service units per instance for Standard/Premium_P1 tier | 100 | 100 |
| Azure Web PubSub Service units per instance for Premium_P2 tier | 100 - 1,000 | 100 - 1,000 |
| Azure Web PubSub Service units per subscription per region for Free tier | 5 | 5 |
| Total Azure Web PubSub Service unit counts per subscription per region | 150 | Unlimited |
| Concurrent connections per unit for Free tier | 20 | 20 |
| Concurrent connections per unit for Standard/Premium tier | 1,000 | 1,000 |
| Included messages per unit per day for Free tier | 20,000 | 20,000 |
| Additional messages per unit per day for Free tier | 0 | 0 |
| Included messages per unit per day for Standard/Premium tier | 1,000,000 | 1,000,000 |
| Additional messages per unit per day for Standard/Premium tier | Unlimited | Unlimited |
To request an update to your subscription's default limits, open a support ticket.
For more information about how connections and messages are counted in billing, see Billing model in Azure Web PubSub Service.
If your requirements exceed the limits, scale up from Free tier to Standard/Premium tier or scale out units. For more information, see How to scale an Azure Web PubSub Service instance.
If your requirements exceed the limits of a single instance, add instances. For more information, see How to use Geo-Replication in Azure Web PubSub.