Server

About: Server is a research topic. Over the lifetime, 79518 publications have been published within this topic receiving 1442029 citations.

A Lock-Free Solution for Load Balancing in Multi-Core Environment

Abstract: Load balancing device is an important part of cloud platform. One of the most common applications of load balancing is to provide a single powerful virtual machine from multiple servers. In multi-core environment, the load balancing device can run multiple physically parallel load-balancing processes to increase overall performance. An important issue when operating a load-balanced service is how to send all requests in a user session consistently to the same backend server, i.e. session maintaining. Most of multiprocessing load balancing solutions use shared memory and lock when manage session. By modifying Linux kernel, we avoid using shared memory and implement a lock-free multiprocessing load balancing solution.

Effective resource control strategies using OpenFlow in cloud data center

Abstract: The increasing popularity of cloud computing applications and the advances in virtualization software technologies (i.e., Virtual Machine deployment) have driven Data Center infrastructures toward a greater complexity and workload dynamicity. Thus, a unified control and management of computing and network resources would be required for assuring proper traffic performances in high volatile virtual machine deployments. This paper introduces a novel resource control platform for virtualized DC environments aimed at optimizing virtual machine placement on physical servers also considering traffic load across links in order to limit oversubscription-related problems. To this purpose OpenFlow statistics are elaborated for their distinguished features that well suit virtualized environments. Two novel algorithms have been conceived and compared by simulations for evaluating the effectiveness of proposed traffic-aware VM placement strategies.

Protected data transfer across disparate networks

Abstract: An electronic marketplace system that protects data transfers across disparate servers or networks can include communication devices that couple system users to a mesh network of public key identity servers and/or link contract servers that are interconnected. The public key identity servers collectively contain a global last-closed ledger of public encryption keys for system users, and verify users using the public keys by accessing local ledgers or asking other identity servers for the public keys. A link contract server provides a link contract regarding the allowed use of the transferred protected data, and provides for a data transfer between the parties after all have agreed thereto. The link contract can be in JSON format in an HTTP or HTTPS header. Users can submit requests to link contract servers, and requests can be searched by vendors prior to proposing a link contract.

Encrypting units of work based on a trust level

Abstract: A method, apparatus, system, and signal-bearing medium that, in an embodiment, determine a cipher strength based on a trust level associated with a request, create a unit of work based on the request, encrypt the unit of work into a message based on the cipher strength, and send the message to grid servers. In various embodiments, the trust level may be determined based on a security token associated with the request or based on a zone from which the request originates. In various embodiments, the request originates from a client that belongs to the zone or originates from one of the grid servers that belongs to the zone. In an embodiment, a request from a grid server may be associated with a response to a previous unit of work that the grid server executed.