Amazon Technologies, Inc.

Julien Ridoux

Alan Michael Judge

Joshua Benjamin Levinson

Erez Izenberg

Said Bshara

Nafea Bshara

Anthony Nicholas Liguori

Thomas Bradley Scholl

Harvo Reyzell Jones

Colin John Whittaker

James Paul Rivers

Robert Klein

Seyed Arash Sadrieh

Bobby Brown

Ali Khayam

Michael W Palladino

Eric Charles Briffa

Tahir Azim

Fiachra John Groarke

Joan Barcelo Llado

Kenan Yang

Rajat Chaudhary

Nikhil Ashok Arjunagi

Robert Louis Mosher

Technologies are disclosed for performing context-aware routing of traffic based on an application of a series of filters and/or selectors to determine an optimal group of interfaces for servicing traffic relating to a prefix. A traffic management control plane processes input data corresponding to aggregated telemetry data for a network by determining candidate groups of interfaces to service a network prefix and applies tunable filters and/or selectors to the candidate groups to determine a targeted group to use for servicing traffic corresponding to the prefix. The determined targeted group is mapped to the prefix in a mapping result, which is then provided to an actuator interface to control network devices to inject the new mapping into the network to control traffic according to the mapping.

Network traffic management

Systems and methods are provided for highly accurate synchronization of machine instances in a distributed, hosted computing environment to a reference timekeeper. In addition to a general communication network accessible to machine instances, the distributed environment includes a second network dedicated to carrying time information, such as a pulse-per-second (PPS) signal to isolated timing hardware within host computing devices. The isolated timing hardware can use the PPS signal, along with a reference time, to set a hardware clock. The isolated timing hardware can further provide an interface to machine instances that enables the instances to read the time of the hardware clock. This configuration enables many instances can share access to a single reference timekeeper, thus synchronizing those instances to a much higher accuracy than in traditional network-based time protocols.

Highly accurate time information in hosted machine instances using dedicated timing network

Virtualized hardware clocks for providing highly accurate time information in hosted machine instances

Various embodiments of apparatuses and methods for multi-cast, multiple unicast, and unicast distribution of messages with time synchronized delivery are described. In some embodiments, the disclosed system and methods include a reference timekeeper providing a reference clock to one or more host computing devices. The one or more host computing devices host compute instances, and also contain respective isolated timing hardware outside the control of the compute instances. The isolated timing hardware of the one or more host computing devices then receive respective packets, and obtain the same time to deliver the respective packets. Each isolated timing hardware provides either the packet, or information to access the packet, to its respective destination compute instance subsequent to determining that the same specified time to deliver the packet has occurred. Thus, the respective packets are delivered near simultaneously to the one or more destination compute instances.

Distribution of messages with guaranteed or synchronized time of delivery

Growing community of inventors

Seattle, WA, United States of America

Julien Ridoux