What Are Restrictions on Using AS?

Only applications that are stateless and can be horizontally scaled can run on instances in an AS group. AS automatically releases ECS instances. Therefore, the instances in AS groups cannot be used to save application status information (such as session statuses) and related data (such as database data and logs).

If the application status or related data must be saved, you can store the information on separate servers.

Table 1 lists the AS service resource quotas.

**Table 1** Quota list
Category	Description	Default Value
AS group	Maximum number of AS groups that you can create	10
AS configuration	Maximum number of AS configurations that you can create	100
AS policy	Maximum number of AS policies that can be added to an AS group	10
Instance	Maximum number of instances that can be added to an AS group	300
Bandwidth scaling policy	Maximum number of bandwidth scaling policies that you can create	10