Rate limits are specified in terms of both a human-readable wild-card URI and a machine-processable regular expression. The regular expression boundary matcher '^' takes effect after the root URI path. For example, the regular expression ^/v1.0/instances would match the bolded portion of the following URI: https://ord.databases.api.rackspacecloud.com/v1.0/instances.
The following table specifies the default rate limits for all API operations for all GET, POST, PUT, and DELETE calls for databases and database instances:
| Verb | URI | RegEx | Default | ||
| GET changes-since | */instances/* | ^/vd+.d+/instances.* | 3/minute | ||
| POST | */instances/* | ^/vd+.d+/instances.* | 10/minute | ||
| POST instances | */instances/* | ^/vd+.d+/instances.* | 50/day | ||
| PUT | */instances/* | ^/vd+.d+/instances.* | 10/minute | ||
| DELETE | */instances/* | ^/vd+.d+/instances.* | 100/minute | ||
Rate limits are applied in order relative to the verb, going from least to most specific. For example, although the threshold for POST to /v1.0/* is 10 per minute, one cannot POST to /v1.0/* more than 50 times within a single day.
If you exceed the thresholds established for
your account, a 413 (Rate
Control) HTTP response will be
returned with a Retry-After header to
notify the client when it can attempt to try
again.
