Abstract: A system and method for facilitating client software access to messages, such as event messages, generated in a networked computing environment, such as a file-collaboration system. An example method uses a message bus and accompanying Application Programming Interfaces (APIs) to allow collaborators to employ client software to interface with highly scalable and organized message bus records, maintained via an underlying distributed database. The APIs and associated interface allow client software; not limited to collaboration software clients; to efficiently publish to, subscribe to, and obtain information about event records of the message bus. An embodiment allows selective load balancing and deferral of event message processing; efficient message offset handling and data center failover functionality, and so on.

Abstract: Techniques are disclosed for improving scalability in a system which incrementally updates remote clients with events that occurred in a cloud-enabled platform. In one embodiment, a method comprises, in response to an action from a user in the cloud-enabled platform, determining a list of events to update one or more collaborators of the user about the action. The method further comprises separating the list of events into a plurality of sub-lists of events such that each sub-list of events can be stored in a database within a designated amount of time, and further comprises storing the plurality of sub-lists of events into the database to be read by the one or more collaborators. Among other advantages, embodiments disclosed herein provide enhancement in scalability, robustness and availability for cloud-based collaboration platforms with large numbers of collaborators by incorporating mechanisms to divide-and-conquer the workload of event updates in such platforms.

Abstract: A system and method for facilitating client software access to messages, such as event messages, generated in a networked computing environment, such as a file-collaboration system. An example method uses a message bus and accompanying Application Programming Interfaces (APIs) to allow collaborators to employ client software to interface with highly scalable and organized message bus records, maintained via an underlying distributed database. The APIs and associated interface allow client software; not limited to collaboration software clients; to efficiently publish to, subscribe to, and obtain information about event records of the message bus. An embodiment allows selective load balancing and deferral of event message processing; efficient message offset handling and data center failover functionality, and so on.

Abstract: Embodiments in the present disclosure include systems and methods related to a high-availability architecture for a cloud-based concurrent-access collaboration platform. The disclosed technology relates to an active data center which includes multiple document server instances that handle user requests for concurrently accessing documents. Multiple document server instances are implemented on a single physical server. This architecture uses an instance assignment manager to assign documents to the document server instances, a primary repository to store backup snapshots of the documents, and a datastore to store all changes made to the documents. The disclosed technology also involves a backup data center that can be swapped with the active data center automatically.

Abstract: Techniques are disclosed for implementing repository redundancy in a system which incrementally updates remote clients with events that occurred in a cloud-enabled platform. In one embodiment, a method comprises comparing a local timestamp of an event with a remote timestamp of the event. The event is to be stored in a queue in a repository cluster to be read by a remote client. The method further comprises updating the local timestamp of the event if the comparing indicates that the remote timestamp is more recent than the local timestamp. Among other advantages, embodiments disclosed herein ensure that no event in an action log is missed or skipped by any of remote clients in a distributed action log framework system during a switchover from an active but failed server to a backup server, and require zero or minimal down time during the switchover, thereby providing robustness and serviceability to such system.

Abstract: Techniques are disclosed for race condition handling in a system which incrementally updates clients with what occurred in a cloud-enabled platform. In one embodiment, a method comprises, in response to an event received at a synchronization client which indicates a modification to an item, comparing a sequence identifier of the item in the event with a current sequence identifier of the item. The sequence identifier of the item can be numeric and can monotonically increase as a state of the item changes. The method further comprises, if the sequence identifier in the event is larger than the current sequence identifier of the item, determining a difference between the item's state as represented in the event and a current state of the item; and, based on the difference, generating at least one synchronization step to update the current state of the item to the item's state as represented in the event.

Abstract: A system for client-server web applications is disclosed. Operations commence upon opening a client-server session configurable to establish a full-duplex persistent network communications between a client device and a server, then receiving an indication to upload or download one or more files or objects over the full-duplex persistent network communications.

Abstract: A system for client-server web applications is disclosed. Operations commence upon opening a client-server session configurable to establish a full-duplex persistent network communications between a client device and a server, then receiving an indication to upload or download one or more files or objects over the full-duplex persistent network communications.

Abstract: System and method for managing updates at clients used by a user to access a cloud-based collaboration service are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, for storing a representation of the action to queues of clients associated with the user in a distributed database cluster based on an action type of an action performed by a collaborator of the user. The clients of the user are selected based on the client category and the action type of the action, to receive a notification as a result of the action or to perform a synchronization with changes that occurred as a result of the action.

Abstract: System and method for incrementally notifying a remote client of updates in a cloud-enabled platform for each remote client associated with a collaborator are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, for detecting an action in the cloud-enabled platform and effectuating a data change as a result of the action in a first database, creating an action log entry from the action, identifying the collaborator of the user's in the cloud-enabled platform, whose remote client is to be synchronized with the data change as an update, and/or writing the action represented by the action log entry to a second database into a queue to by read by the remote client of the collaborator.

Abstract: Embodiments in the present disclosure include systems and methods related to a high-availability architecture for a cloud-based concurrent-access collaboration platform. The disclosed technology relates to an active data center which includes multiple document server instances that handle user requests for concurrently accessing documents. Multiple document server instances are implemented on a single physical server. This architecture uses an instance assignment manager to assign documents to the document server instances, a primary repository to store backup snapshots of the documents, and a datastore to store all changes made to the documents. The disclosed technology also involves a backup data center that can be swapped with the active data center automatically.

Abstract: Techniques are disclosed for improving scalability in a system which incrementally updates remote clients with events that occurred in a cloud-enabled platform. In one embodiment, a method comprises, in response to an action from a user in the cloud-enabled platform, determining a list of events to update one or more collaborators of the user about the action. The method further comprises separating the list of events into a plurality of sub-lists of events such that each sub-list of events can be stored in a database within a designated amount of time, and further comprises storing the plurality of sub-lists of events into the database to be read by the one or more collaborators. Among other advantages, embodiments disclosed herein provide enhancement in scalability, robustness and availability for cloud-based collaboration platforms with large numbers of collaborators by incorporating mechanisms to divide-and-conquer the workload of event updates in such platforms.

Abstract: Techniques are disclosed for implementing repository redundancy in a system which incrementally updates remote clients with events that occurred in a cloud-enabled platform. In one embodiment, a method comprises comparing a local timestamp of an event with a remote timestamp of the event. The event is to be stored in a queue in a repository cluster to be read by a remote client. The method further comprises updating the local timestamp of the event if the comparing indicates that the remote timestamp is more recent than the local timestamp. Among other advantages, embodiments disclosed herein ensure that no event in an action log is missed or skipped by any of remote clients in a distributed action log framework system during a switchover from an active but failed server to a backup server, and require zero or minimal down time during the switchover, thereby providing robustness and serviceability to such system.

Abstract: Techniques are disclosed for race condition handling in a system which incrementally updates clients with what occurred in a cloud-enabled platform. In one embodiment, a method comprises, in response to an event received at a synchronization client which indicates a modification to an item, comparing a sequence identifier of the item in the event with a current sequence identifier of the item. The sequence identifier of the item can be numeric and can monotonically increase as a state of the item changes. The method further comprises, if the sequence identifier in the event is larger than the current sequence identifier of the item, determining a difference between the item's state as represented in the event and a current state of the item; and, based on the difference, generating at least one synchronization step to update the current state of the item to the item's state as represented in the event.

Abstract: System and method for managing updates at clients used by a user to access a cloud-based collaboration service are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, for storing a representation of the action to queues of clients associated with the user in a distributed database cluster based on an action type of an action performed by a collaborator of the user. The clients of the user are selected based on the client category and the action type of the action, to receive a notification as a result of the action or to perform a synchronization with changes that occurred as a result of the action.

Abstract: System and method for incrementally notifying a remote client of updates in a cloud-enabled platform for each remote client associated with a collaborator are disclosed. In one aspect, embodiments of the present disclosure include a method, which may be implemented on a system, for detecting an action in the cloud-enabled platform and effectuating a data change as a result of the action in a first database, creating an action log entry from the action, identifying the collaborator of the user's in the cloud-enabled platform, whose remote client is to be synchronized with the data change as an update, and/or writing the action represented by the action log entry to a second database into a queue to by read by the remote client of the collaborator.