The organizational rate limit policy controls the number of times API consumers can invoke an API during a designated time period, for all the APIs in the organization that are managed by API Manager. You can't delete the rate limit rule, but you can change the default organizational rate limit for managed APIs and custom APIs.
The policy applies to all the APIs in the organization that don't have an API-specific rate limit policy or a group rate limit policy enabled. API-specific rate limit policies and API group policies override the organizational policy.
The organizational policy is defined by a rate limit tier. A tier is a logical entity that determines the number of times that users can invoke the API during a designated time period. You can update the organizational policy by editing the value of the default organizational rate limit policy tier or by selecting a different tier.
You assign the organizational rate limit policy tier to either be shared by all users or allocated per user. When you allocate the organizational tier to all users, the number of calls per time frame defined in the tier is divided between all users. When you allocate the tier per user, each user can make the defined number of calls within the defined time frame. You can also assign rate limit tiers to specific users in the organization.
The default rate limit for an API is 1,000 requests per minute. The maximal rate limit that you can define is 3,000 requests per minute.
Updating the organizational rate limit policy
Update the organizational rate limit policy on the Access tab of the Policies page.
1To change the tier that defines the organizational rate limit policy, on the Access tab of the Policies page, in the Rate Limit panel, select the tier.
2To edit the selected tier, perform the following steps:
aClick Tier Setup. The Tier Setup window opens.
bSelect the tier, click to open the Actions menu, and select Edit.
The Edit Tier window opens.
cEdit one or more of the following properties and then click Save:
▪ Number of calls.
▪ Number of seconds (Time Frame).
▪ Description (optional).
dClick Close.
3Select how to assign the organizational rate limit tier:
- Shared by all users. All users share the rate limit that you select.
- Allocated per user. Each user is allocated the rate limit that you select.
4To assign user-specific tiers, expand the User-specific Tiers area and perform the following steps:
aEnter a user name in the User Name field.
bSelect a rate limit tier from the Tier list and click Add.
cRepeat steps a and b to assign additional user-specific tiers as needed.