Satori Worldwide, LLC

Machine Zone Inc.

Fredrik Erik Linder

Lev Walkin

Bartlomiej Puzon

Francois Orsini

Igor Milyakov

Boaz Sedan

Anton Koinov

Oleg Khabinov

Nikhil Bojja

Pidong Wang

Younes Hafri

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for assigning channels in a messaging system. An example method includes: providing a plurality of channels, wherein each channel includes an ordered plurality of messages; assigning each channel to a channel bucket to form a plurality of channel buckets, wherein each channel bucket includes at least two channels from the plurality of channels; and assigning each channel bucket to a node selected from a plurality of nodes, wherein the node includes one or more buffers for storing messages according to the order from the channel buckets of the node.

Channel management in scalable messaging system

A publish-subscribe messaging systems and methods are described. A method may include retrieving, by one or more computer processors, messages for a particular one of a plurality of channels from one or more respective buffers allocated to the particular channel that have not expired and according to an order, wherein each buffer comprises a respective time-to-live. The method also includes sending, by the one or more computer processors, the messages retrieved for the particular channel to one or more subscriber clients that have subscribed to the particular channel.

Scalable, real-time messaging system

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, to allocate a first buffer on a first node of a plurality of nodes for storing messages associated with a channel, grant a first write request to a publisher to write one or more messages to the first buffer, and determine that the first buffer is not available for writing the one or more messages when the first buffer is full; and, in response, select a second node from the plurality of nodes based on a respective workload of nodes in the plurality of nodes, and allocate a second buffer on the second node for storing the one or more messages associated with the channel.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for implementing key-value store functionality within a real-time messaging system. An example method includes: providing a plurality of channels, wherein each channel comprises an ordered plurality of messages, wherein each channel represents a unique key, and wherein each message comprises one or more key-value pairs; receiving a function comprising a key for identifying one of the plurality of channels and processing instructions to be applied to a subset of the key-value pairs; and applying the processing instructions based at least in part on the unique key.

Data storage systems and methods using a real-time messaging system

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for balancing loads in a publish-subscribe system. An example method includes: selecting a first hosting node from a plurality of hosting nodes based, at least in part, on a load data selected from at least one of node-specific data representing loads on the plurality of hosting nodes and channel-specific data representing a load associated with a channel; sending a request to the first hosting node to temporarily host a portion of a channel; temporarily hosting the channel portion by the first hosting node by temporarily storing one or more messages published to the channel, and temporarily providing, to a plurality of subscribers to the channel, access to the one of more messages; receiving a request to access the channel portion; and granting permission to access the channel portion.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving from a plurality of publishers a plurality of messages, each of the messages being assigned to one of a plurality of distinct channels wherein each channel comprises an ordered plurality of messages, storing each message of each of the channels in a respective buffer, each buffer having a time-to-live, during the storing, removing one or more of the buffers having respective time-to-lives that have expired, and providing messages for one or more of the channels to one or more subscribers from a plurality of the remaining buffers according to the order.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for maintaining a plurality of channels, each channel comprising an ordered plurality of messages stored in one or more buffers, each buffer having a respective time-to-live and a plurality of copies residing on respective nodes, detecting failure of a first node of the plurality of nodes wherein the first node stores respective first copies of first buffers and at least one subscriber is subscribed to messages of one or more first channels, for a first buffer with a first copy residing on the first node, identifying any other of the plurality of nodes as a second node storing a second copy of the first buffer, redirecting the at least one subscriber from the first node to the second node, and retrieving messages stored in the second copy on the second node for the at least one subscriber.

Data replication in scalable messaging system

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving from a plurality of publisher clients a plurality of messages, assigning each of the messages to one of a plurality of distinct channels wherein each channel comprises an ordered plurality of messages, storing messages of each of the channels in one or more respective buffers according to the order, each buffer having a respective time-to-live, retrieving messages for one or more of the channels from respective buffers having time-to-lives that have not expired and according to the order, and sending the retrieved messages to a plurality of subscriber clients.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving a write request from a publisher comprising a channel name wherein the channel identified by the channel name comprises an ordered plurality of messages stored in buffers, each buffer having a predetermined time-to-live and being assigned to a respective node, identifying a first node and a first buffer stored on the first node based on the channel name of the request that has available storage for storing messages and wherein the first buffer has a time-to-live that has not expired, and sending a write grant to the publisher wherein the grant comprises identification of the first node and the first buffer, and wherein the publisher is configured to send messages to the first node for storage in the first buffer based on the grant until the first buffer is full or its time-to-live has expired.

Implementations of the present disclosure are directed to a method, a system, and a computer program storage device for detecting a language in a text message. A plurality of different language detection tests are performed on a message associated with a user. Each language detection test determines a set of scores representing a likelihood that the message is in one of a plurality of different languages. One or more combinations of the score sets are provided as input to one or more distinct classifiers. Output from each of the classifiers includes a respective indication that the message is in one of the different languages. The language in the message may be identified as being the indicated language from one of the classifiers, based on a confidence score and/or an identified linguistic domain.

Growing community of inventors

Dublin, CA, United States of America

Fredrik Erik Linder