Limits
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IoT Edge has limits on features for edge instances and scene orchestration in the rules engine.
Edge instance limits
| Limit | Description |
| Total edge instances ≤ 100,000 | You can create a maximum of 100,000 edge instances under a single Alibaba Cloud account. |
| Authorizations per edge instance ≤ 20 | An edge instance can be granted to a maximum of 20 users. |
| Gateways per edge instance = 1 | Each edge instance must have exactly one gateway. |
| Drivers per edge instance ≤ 30 | You can assign a maximum of 30 drivers to each edge instance. |
| Sub-devices per edge instance ≤ 1,000 | You can assign a maximum of 1,000 sub-devices to each edge instance. |
| A maximum of 30 rules per edge instance | You can assign a maximum of 30 scene orchestrations to each edge instance. |
| Function Compute instances per edge instance ≤ 30 | You can assign a maximum of 30 Function Compute instances to each edge instance. |
| Message routes per edge instance ≤ 30 | You can add a maximum of 30 message routes to each edge instance. |
Driver limits
| Limit | Description |
| Custom drivers ≤ 50 | For a single Alibaba Cloud account, you can create a maximum of 50 custom drivers in the IoT Platform console under . |
| Uploaded code package for a custom driver ≤ 50 MB | The size of each driver package cannot exceed 50 MB. |
| Driver versions ≤ 10 | A driver can have a maximum of 10 versions. |
| Key-value pairs in driver configuration ≤ 100 | You can add a maximum of 100 key-value pairs to a driver configuration. |
| JSON format in driver configuration ≤ 1 KB | The content in JSON format in a driver configuration cannot exceed 1 KB. |
| Configuration file in driver configuration ≤ 1 MB | The size of an uploaded configuration file for a driver cannot exceed 1 MB. |
| JSON format in device configuration ≤ 1 KB | The content of a device configuration in JSON format cannot exceed 1 KB. |
Scene orchestration limits
| Limit | Description |
| Total rules ≤ 100 | You can create a maximum of 100 rules for scene orchestration in the rules engine service. |
| Triggers per rule ≤ 10 | You can add a maximum of 10 triggers to each rule. |
| Filter conditions per rule ≤ 5 | You can add a maximum of 5 filter conditions to each rule. |
| Actions per rule ≤ 10 | You can add a maximum of 10 actions to each rule. |
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