Systems and methods for improving database system performance are described. In one embodiment, a database system includes a master database, a replica database, a shared memory, and a multiplexer coupled to the master database, replica database, and shared memory. The multiplexer is configured to receive a request from a client computing system which includes a database query. Based on a lookup in the shared memory, the multiplexer determines that the database query can be satisfied by the replica database. In response, the database query is routed to the replica database for execution.

In one embodiment, a method includes receiving a first user input from a first user, wherein the first user input comprises a partial request, presenting one or more suggested intent auto-completions corresponding to the partial request, receiving a selection by the first user of a first suggested intent auto-completion of the suggested intent auto-completions and a second user input, presenting one or more suggested slot auto-completions corresponding to one or more candidate slot-hypotheses corresponding to the second user input, respectively, wherein each of the candidate slot-hypotheses comprise a slot-suggestion, and wherein each suggested slot auto-completion comprises the second user input and the corresponding candidate slot-hypothesis, receiving a selection by the first user of a first suggested slot auto-completion of the suggested slot auto-completions, and presenting execution results of one or more tasks corresponding to the first suggested intent auto-completion and the first suggested slot auto-completion.

In one embodiment, a method includes by a client system associated with a user, receiving, at the client system associated with the user, a user input, parsing the user input to identify an n-gram associated with a wake word from a plurality of wake words corresponding to a plurality of assistant systems associated with the client system, wherein each assistant system provides a particular set of functions, determining that the wake word corresponds to a first assistant system of the plurality of assistant systems, wherein the first assistant system provides a first set of functions, sending, to the first assistant system, a request to set an assistant xbot of the first assistant system into a listening mode, and receiving, from the first assistant system, an indication that the assistant xbot is in listening mode responsive to a determination that the user has permission to access the first assistant system.

In one embodiment, a method includes receiving an instruction to add an assistant xbot as a participant in a conversation thread from a first user of a plurality of users participating in the conversation thread, monitoring the conversation thread including user inputs by one or more users of the plurality of users via the assistant xbot, analyzing the user inputs to identify intents based on a natural-language understanding module, sending instructions for prompting one or more users of the plurality of users to provide information for completing tasks associated with the intents via the assistant xbot within the conversation thread, executing the tasks based on the information provided by one or more agents, and sending instructions for presenting information associated with one or more of the executed tasks via the assistant xbot within the conversation thread.

In one embodiment, a method includes receiving a user request for a summarization of a particular type of content objects from a client system associated with a first user, determining one or more modalities associated with the user request, selecting a plurality of content objects of the particular type based on a user profile of the first user, wherein the user profile comprises one or more confidence scores associated with one or more subjects associated with the first user, respectively, and wherein the plurality of content objects are selected based on the one or more confidence scores, generating a summary of each content object based on the user profile and the determined modalities, and sending, to the client system in response to the user request, instructions for presenting the summaries of the plurality of content objects, wherein the summaries are presented via one or more of the determined modalities.

In one embodiment, a method includes receiving from a client system associated with a first user a user input based on one or more modalities, at least one of which is a visual modality, identifying one or more subjects associated with the user input based on the visual modality based on one or more machine-learning models, determining one or more attributes associated with the one or more subjects respectively based on the one or more machine-learning models, resolving one or more entities corresponding to the one or more subjects based on the determined one or more attributes, executing one or more tasks associated with the one or more resolved entities, and sending instructions for presenting a communication content including information associated with the executed one or more tasks responsive to user input to the client system associated with the first user.

In one embodiment, a method includes receiving a user request from a first user from a client system associated with a first user, wherein the user request comprise a gesture-input from the first user and a speech-input from the first user, determining an intent corresponding to the user request based on the gesture-input by a personalized gesture-classification model associated with the first user, executing one or more tasks based on the determined intent and the speech-input, and sending instructions for presenting execution results of the one or more tasks to the client system responsive the user request.

A method for smart preloading of content resources on client devices is provided. The method includes operations for presenting an interface running on a client device that includes a plurality of content indicators associated with a plurality of content items. The method includes an operation for selectively preloading into a cache of the client device a resource associated with a content item if the content item has a level of engagement that is greater than that of other content items. According to this embodiment, the level of engagement is a measurement of interaction to the content items by other users associated with the user by, for example, a social network. The method further includes retrieving and using the resource for presenting the content item via the interface such that the content item is presented in less time than if the resource were not preloaded to the cache based on the level of engagement.

In one embodiment, a method includes, by a client system, receiving, by an assistant xbot of the client system, a request from a first user for a summary of user content from a first content source, retrieving, from the first content source, a plurality of content items corresponding to the request, generating a personalized summary of the retrieved content items, wherein the personalization of the summary is based on a user profile of the first user, and presenting, by the assistant xbot, the personalized summary responsive to the request within a separate communication interface between the assistant xbot and the first user, wherein the personalized summary is interactable by the first user to react to one or more of the plurality of content items.

In one embodiment, a method includes receiving a request to access a first record in a plurality of records, where the first record describes a first set of attributes of a first entity, determining the first record is linked to a globally unique entity identifier, identifying one or more second records linked to the unique entity identifier, where the one or more second records describe one or more second sets of attributes of the first entity, generating a fused record comprising descriptions of attributes of the first entity from the first set and second sets of attributes, where the fused record is generated by deduping the plurality of records to associated the first record and the one or more second record with the unique entity identifier and compiling the first set and one or more second sets of attributes, and sending, in response responsive to the request to access the first record, instructions for presenting the fused record.