| = Gerrit Code Review - Quota | 
 |  | 
 | Gerrit does not provide out of the box quota enforcement. However, it does | 
 | support an extension mechanism for plugins to hook into to provide this | 
 | functionality. The most prominent plugin is the | 
 | link:https://gerrit.googlesource.com/plugins/quota/[Quota Plugin]. | 
 |  | 
 | This documentation is intended to be read by plugin developers. It contains all | 
 | quota requests implemented in Gerrit-core as well as the metadata that they have | 
 | associated. | 
 |  | 
 | == Quota Groups | 
 |  | 
 | The following quota groups are defined in core Gerrit: | 
 |  | 
 | === REST API | 
 | [[rest-api]] | 
 |  | 
 | The REST API enforces quota after the resource was parsed (if applicable) and before the | 
 | endpoint's logic is executed. This enables quota enforcer implementations to throttle calls | 
 | to specific endpoints while knowing the general context (user and top-level entity such as | 
 | change, project or account). | 
 |  | 
 | If the quota enforcer wants to throttle HTTP requests, they should use | 
 | link:quota.html#http-requests[HTTP Requests] instead. | 
 |  | 
 | The quota groups used for checking follow the exact definition of the endoint in the REST | 
 | API, but remove all IDs. The schema is: | 
 |  | 
 | /restapi/<ENDPOINT>:<HTTP-METHOD> | 
 |  | 
 | Examples: | 
 |  | 
 | [options="header",cols="1,6"] | 
 | |======================= | 
 | |HTTP call                                 |Quota Group                    |Metadata | 
 | |GET /a/changes/1/revisions/current/detail |/changes/revisions/detail:GET  |CurrentUser, Change.Id, Project.NameKey | 
 | |POST /a/changes/                          |/changes/:POST                 |CurrentUser | 
 | |GET /a/accounts/self/detail               |/accounts/detail:GET           |CurrentUser, Account.Id | 
 | |======================= | 
 |  | 
 | The user provided in the check's metadata is always the calling user (having the | 
 | impersonation bit and real user set in case the user is impersonating another user). | 
 |  | 
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