There are some limits on the number of metrics and events per application (that is, per instrumentation key). Limits depend on the pricing plan that you choose.
| Resource | Default limit | Note |
|---|---|---|
| Total data per day | 500 GB | You can reduce data by setting a cap. If you need more, mail [email protected]. |
| Free data per month (Basic price plan) |
1 GB | Additional data is charged per gigabyte. |
| Throttling | 32 k events/second | The limit is measured over a minute. |
| Data retention | 90 days | This resource is for Search, Analytics, and Metrics Explorer. |
| Availability multi-step test detailed results retention | 90 days | This resource provides detailed results of each step. |
| Maximum event size | 64 K | |
| Property and metric name length | 150 | see comment below for more informaiton |
| Property value string length | 8,192 | see comment below for more informaiton |
| Trace and exception message length | 10 k | see comment below for more informaiton |
| Availability tests count per app | 10 |
For more information, see About pricing and quotas in Application Insights.
For more informaiton on data fields limits see per type schemas