Abstract: A method and apparatus for a mechanism of disaster recovery and instance refresh in an event recordation system are described. A first request for events associated with a first topic is received. A first set of events associated with the first topic are retrieved from a primary event recordation system. Each event from the first set of events includes a first commit identifier indicating the order with which each event is stored in the primary event recordation system. For each event from the first set of events a first replay identifier is determined based on the first commit identifier and a first value of a low commit identifier. The first replay identifier is exposed to event consumers for identifying the event. In response to the first request each event from the first set of events is transmitted with the replay identifier.

Abstract: A method and apparatus for a mechanism of disaster recovery and instance refresh in an event recordation system are described. A first request for events associated with a first topic is received. A first set of events associated with the first topic are retrieved from a primary event recordation system. Each event from the first set of events includes a first commit identifier indicating the order with which each event is stored in the primary event recordation system. For each event from the first set of events a first replay identifier is determined based on the first commit identifier and a first value of a low commit identifier. The first replay identifier is exposed to event consumers for identifying the event. In response to the first request each event from the first set of events is transmitted with the replay identifier.

Abstract: Disclosed are methods, apparatus, systems, and computer-readable storage media for modifying permission sets and validating permission set assignments to users. In some implementations, a computing device receives a request to create a permission set containing one or more permissions and assign the permission set to a first user. The first user is associated with a first user constraint that defines a first group of permissions available to the first user. The computing device may determine that the permission set to be assigned to the first user does not violate the first user constraint, and may assign the permission set to the first user.

Abstract: Disclosed are methods, apparatus, systems, and computer-readable storage media for modifying permission sets and validating permission set assignments to users. In some implementations, a computing device receives a request to create a permission set containing one or more permissions and assign the permission set to a first user. The first user is associated with a first user constraint that defines a first group of permissions available to the first user. The computing device may determine that the permission set to be assigned to the first user does not violate the first user constraint, and may assign the permission set to the first user.