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Nowadays enterprise software solutions must deal with ever-growing complexity and a multitude of business processes. The mainstream system design decomposes the system into small reusable services. While these services isolate certain system logic and address efficient elasticity towards growing user demands, there are multiple issues related to such a design, such as limitations to deal with restated...
Thespis is a middleware that innovatively leverages the Actor model to implement causal consistency over an industry-standard database, whilst abstracting complexities for application developers behind a REST open-protocol interface. Our evaluation considers correctness, performance and scalability aspects. We also run empirical experiments using YCSB to show the efficacy of the approach for a variety...
The vision of the Internet of Things enabled the development of a wide spectrum of services, applications and ecosystems, deemed infeasible not long ago. However, lack of standardization poses a number of questions still requiring proper addressing. Due to the need of supporting large number of users and significant data processing throughput, Internet of Things requires a specific approach towards...
RINA, the Recursive InterNetwork Architecture, is a novel “back to basics” type approach to networking. The recursive nature of RINA calls for radically different approaches to how networking is performed. It shows great potential in many aspects, e.g. by simplifying management and providing better security. However, RINA has not been explored for congestion control yet. In this paper, we take first...
When applying Software-Defined Networks (SDN) to WANs, the SDN flexibility enables the cross-domain control to achieve a better control scalability. However, the control consistence is required by all the cross-domain services, to ensure the data plane configured in consensus for different domains. Such consistence process is complicated by potential failure and errors of WANs. In this paper, we propose...
We present a transaction model which simultaneously supports different consistency levels, which include serial-izable transactions for strong consistency, and weaker consistency models such as causal snapshot isolation (CSI), CSI with commutative updates, and CSI with asynchronous updates. This model is useful in managing large-scale replicated data with different consistency guarantees to make suitable...
In this paper, a server architecture based on the TR-069 communication protocol is proposed. Server provides an efficient and adaptive way to remotely control and monitor customer devices. The proposed solution is a modular because provides extendable layers to connect various statistics modules, modules for analysis and diagnosis of customer devices or for graphical presentation applications, such...
Clouds are becoming the preferred platforms for large-scale applications. Currently, Cloud environments focus on high scalability and availability by relaxing consistency. Weak consistency's considered to be sufficient for most of the currently deployed applications in the Cloud. However, the Cloud is increasingly being promoted as environment for running a wide range of different types of applications...
Recently, Hadoop Distributed File System (HDFS) has been widely used to manage the large-scale data due to its high scalability. HDFS can natively support sequential queries, which are the most common queries in the applications. However, there still exist many applications that need to apply random queries of large-scale data. So the random queries in large-scale data are becoming more and more important...
Network management is facing new challenges with the definition of the future Internet. Among those challenges, the management of network's heterogeneity represents a highly complex problem. The most popular proposals addressing this problem following RFC 3139 guidelines, translate from mid-level independent representations to the network's services and devices heterogeneous management interfaces...
This paper studies the realization and scalability of release and protected release consistency models in Network-on-Chip (NoC) based Distributed Shared Memory (DSM) multi-core systems. The protected release consistency (PRC) model is proposed as an extension of the release consistency (RC) model and provides further relaxation in the shared memory operations. The realization schemes of RC and PRC...
Replication is a technique widely used for achieving qualities like scalability, high performance, high availability and fault tolerance in computer systems. Consistency of the system state is another quality that may also vary as a side effect of replication. There are various configurations of replication architecture and of replica control protocols that provide various levels of these system qualities...
This paper describes the scalability of linear algebra kernels based on remote memory access approach. The current approach differs from the other linear algebra algorithms by the explicit use of shared memory and remote memory access (RMA) communication rather than message passing. It is suitable for clusters and scalable shared memory systems. The experimental results on large scale systems (Linux-Infiniband...
New applications for wireless sensor networks (WSNs) that demand stricter quality of service guarantees may require high levels of scalability, robustness, life expectancy and response time. Unfortunately, most sensor network communication protocols often guarantee several of these requirements at the risk of others. Caching provides a doorway to a solution, however works reviewed thus far in WSN...
As networks become more and more heterogeneous, SNMP can not meet current management requirements for complex networks, especially those configuration management needs. NETCONF protocol is a next generation configuration protocol developed by IETF organization. In this paper, in the full considerations for architectures of NETCONF Agent we explicate the details of NETCONF protocol 'implements, especially...
The downsizing of transistor dimensions enabled in the future nanotechnologies will inevitably increase the number of faults in the complex ULSI chips. To maintain the production yield at acceptable level, several levels of protection mechanisms will have to be implemented to tolerate the permanent and transient faults occurring in the physical layers. In this paper, we study fault tolerance at the...
As a macro complex systematic engineering, the Digital Ocean project is an ongoing task in china. The mission of the Digital Ocean is to build an interactive network information system based on a three-dimensional globe. The Digital Ocean can help provide integrated information on historical, current and future states of ocean and coastal zone. This paper addresses the architecture of Digital Ocean,...
Accelerated by the rapid deployment of distributed systems and the Internet, online collaboration and information sharing are pervasive in enterprise computing environment. With regard to the requirements of online collaboration and information sharing, authentication information needs flexible manipulation to facilitate federation across trust domains. To achieve identity federation for federated...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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