Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, the method includes receiving a stream of messages at a client device, wherein the stream of messages comprises a message transfer rate. The method may also include determining, by one or more computer processors, a download rate for an application client of the client device, and providing, by the one or more computer processors, the stream of messages to the application client at the message transfer rate when the message transfer rate is less than or equal to the download rate. The method may also include storing, by the one or more computer processors, the stream of messages in a buffer on the client device when the message transfer rate is greater than the download rate.

Abstract: Methods, systems, and apparatus, including computer programs for identifying a first message in a first channel of a plurality of channels corresponding to a position in the first channel, wherein the first message is stored in a buffer having a time-to-live that has expired. The methods may also include sending, by one or more computer processors, a request for messages beginning at the position to one or more client devices that subscribe to the first channel and receiving, from at least one client device, a response message comprising one or more messages of the first channel that are at or after the position. The methods may further include retrieving messages for the first channel from one or more buffers of the first channel having time-to-lives that have not expired, and combining, by the one or more computer processors, the retrieved messages and the messages from the response message.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, a stream of messages is provided to a messaging application on a client device at a desired message feed rate. A message download rate of the stream of messages by the messaging application is monitored. A determination is made that the message download rate is less than the desired message feed rate. In response, the stream of messages is provided to a buffer on the client device at the desired message feed rate, and the stream of messages is sent from the buffer to the messaging application at the message download rate. A determination is made that the message download rate is greater than the desired message feed rate and, in response, a stored quantity of messages on the buffer is allowed to decrease.

Abstract: Methods, systems, and apparatus, including computer programs for receiving, from a first client device, a request for messages of a first channel of a plurality of channels starting at a position in the first channel, wherein each channel comprises a respective ordered plurality of messages stored in one or more respective buffers according to the order, each buffer having a respective time-to-live; receiving, from one of the second client devices, a response message comprising one or more messages of the first channel that are at or after the position in the order; and sending the messages to the first client device.

Abstract: Methods, systems, and apparatus, including computer programs for receiving, from a first client device, a request for messages of a first channel of a plurality of channels starting at a position in the first channel, wherein each channel comprises a respective ordered plurality of messages stored in one or more respective buffers according to the order, each buffer having a respective time-to-live; receiving, from one of the second client devices, a response message comprising one or more messages of the first channel that are at or after the position in the order; and sending the messages to the first client device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, a stream of messages is provided to a messaging application on a client device at a desired message feed rate. A message download rate of the stream of messages by the messaging application is monitored. A determination is made that the message download rate is less than the desired message feed rate. In response, the stream of messages is provided to a buffer on the client device at the desired message feed rate, and the stream of messages is sent from the buffer to the messaging application at the message download rate. A determination is made that the message download rate is greater than the desired message feed rate and, in response, a stored quantity of messages on the buffer is allowed to decrease.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, a stream of messages is provided to a messaging application on a client device at a desired message feed rate. A message download rate of the stream of messages by the messaging application is monitored. A determination is made that the message download rate is less than the desired message feed rate. In response, the stream of messages is provided to a buffer on the client device at the desired message feed rate, and the stream of messages is sent from the buffer to the messaging application at the message download rate. A determination is made that the message download rate is greater than the desired message feed rate and, in response, a stored quantity of messages on the buffer is allowed to decrease.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, a stream of messages is provided to a messaging application on a client device at a desired message feed rate. A message download rate of the stream of messages by the messaging application is monitored. A determination is made that the message download rate is less than the desired message feed rate. In response, the stream of messages is provided to a buffer on the client device at the desired message feed rate, and the stream of messages is sent from the buffer to the messaging application at the message download rate. A determination is made that the message download rate is greater than the desired message feed rate and, in response, a stored quantity of messages on the buffer is allowed to decrease.

Abstract: Methods, systems, and apparatus, including computer programs for receiving, from a first client device, a request for messages of a first channel of a plurality of channels starting at a position in the first channel, wherein each channel comprises a respective ordered plurality of messages stored in one or more respective buffers according to the order, each buffer having a respective time-to-live; receiving, from one of the second client devices, a response message comprising one or more messages of the first channel that are at or after the position in the order; and sending the messages to the first client device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are described for providing messages to client devices. In certain examples, a stream of messages is provided to a messaging application on a client device at a desired message feed rate. A message download rate of the stream of messages by the messaging application is monitored. A determination is made that the message download rate is less than the desired message feed rate. In response, the stream of messages is provided to a buffer on the client device at the desired message feed rate, and the stream of messages is sent from the buffer to the messaging application at the message download rate. A determination is made that the message download rate is greater than the desired message feed rate and, in response, a stored quantity of messages on the buffer is allowed to decrease.