Nasdaq Technology AB

Example embodiments relate to a method of, and device for facilitating, resilient peer-to-peer application message routing. The method comprises storing a network routing table comprising destination addresses of applications hosted on peer nodes of a network, and providing the peer nodes with a copy of the routing table via which routing table an application message from any one of the peer nodes is routed to a destination address designating a destination application hosted by a destination peer node. Further, the method comprises providing, when the destination application hosted by the destination peer node is inactivated, all peer nodes with a copy of an updated routing table taking into account the inactivation of said application, wherein a further application message addressed from any one of the peer nodes to the destination address associated with the inactivated application is routed via the updated routing table, to an alternative destination application having the same destination address as the inactivated application.

A computer system that interfaces with a blockchain is provided. The computer system receives match data for a match between a first data transaction request that is associated with a first identifier and a second data transaction request that is associated with a second identifier. A first blockchain transaction is generated based on the match data and stored to a blockchain. At least one further blockchain transaction is generates that splits the match into two different transactions—one between the first identifier and an intermediary and the second between the intermediary. These are recorded to the blockchain via the further blockchain transactions.

An asynchronous distributed computing system with a plurality of computing nodes is provided. One of the computing nodes includes a sequencer service that receives updates from the plurality of computing nodes. The sequencer service maintains or annotates messages added to the global state of the system. Updates to the global state are published to the plurality of computing nodes. Monitoring services on the other computing nodes write the updates into a locally maintained copy of the global state that exists in shared memory on each one of the nodes. Client computer processes on the nodes may then subscribe to have updates “delivered” to the respective client computer processes.

Apparatus and methods for managing messages in a computer system are described. A plurality of order/quote messages is received via an input mechanism, and the order/quote messages are ranked based on the at least one ranking value parameter at a first ranking unit. At least one top ranked order/quote message is sent from the first ranking unit to a matching unit, and the top ranked order/quote messages are matched at the matching unit.

The technology is suitable for any kind of distributed networks having different data rates on different connections and a computer system where the data to distribute is created. The system comprises one or more supersets of data to be distributed to client computers by extracting subsets of data from the superset(s) of data. Thereafter, the subsets of data are distributed to selected groups of clients based on information about the network architecture. This provides an efficient way of distributing data without having to duplicate distributed data. In example implementations, subsets may be distributed to clients based on a counter performance or a data rate of a client's connection to the computer system.

A screen sharing presentation system includes a presenter client system that leads a presentation and listener client systems that follow the presentation. A server facilitates communication between the presenter client system and the listener client systems. Users of the client systems may provide annotation information for the presentation. The annotation data is not visible to other users of other client systems, but is displayed on the respective user's personal views of the presentation. The presenter client system and the listener client systems are synchronized by communicating a current document location or other status indications.

Data transaction request message information associated with a user, a first limit parameter associated with the user, and a second limit parameter associated with the user are stored in memory. A processing system calculates, at a first time, data transaction requests associated with the user and a transactional rate parameter associated with the user based on a relationship between the data transaction requests associated with the user and the second limit amount parameter. Data transaction request messages received from the user between the first time and a second later time are monitored. The transactional rate parameter is adjusted based on data transaction requests associated with the user received between the first and second times. A transactional limit parameter is calculated using the data transaction requests associated with the user, the transactional rate parameter, and the first limit parameter. When the transactional limit parameter is exceeded, execution of further data transactions of a first type requested by the user between the first time and the second later time is suspended.

Control circuitry controls the operations of a central processing unit, CPU, which is associated with a nominal clock frequency. The CPU is further coupled to an I/O range and configured to deliver input to an application. The control circuitry controls the CPU to poll the I/O range for input to the application. The control circuitry also monitors whether or not each poll results in input to the application and adjusts a clock frequency at which the CPU operates to a clock frequency lower than the nominal clock frequency if a pre-defined number of polls resulting in no input is detected. Methods and a central computer server of an automated exchange system are also provided.

A derivative trade order at a home marketplace is routed to an away market place having a better price for a counter position to the order where it is executed. The executed order triggers creation of a “balance derivative trade” at the home marketplace to balance at a home clearing house the away trade. The home clearing house uses the balance derivative trade to create derivative positions of the balance derivative trade and informs a balancing clearing entity which manages the balance derivative trade obligations. The balance derivative trade order account permits netting and reduced margin benefits for the trading participant. A dual derivative exercise operation allows balance derivative positions to be performed in one day to reduce overnight risk for the clearing entity.

A screen sharing presentation system includes a presenter client system that leads a presentation and listener client systems that follow the presentation. A server facilitates communication between the presenter client system and the listener client systems. Users of the client systems may provide annotation information for the presentation. The annotation data is not visible to other users of other client systems, but is displayed on the respective user's personal views of the presentation. The presenter client system and the listener client systems are synchronized by communicating a current document location or other status indications.