Facebook recently deployed Facebook Messages, its first ever user-facing application built on the Apache Hadoop platform. Apache HBase is a database-like layer built on Hadoop designed to support billions of messages per day. This paper describes the reasons why Facebook chose Hadoop and HBase over other systems such as Apache Cassandra and Voldemort and discusses the applicationBs requirements for consistency, availability, partition tolerance, data model and scalability. I explore the enhancements made to Hadoop to make it a more effective realtime system, the tradeoffs we made while configuring the system, and how this solution has significant advantages over the sharded MySQL database scheme used in other applications at Facebook and many other web-scalecompanies. I discuss the motivations behind my design choices, the challenges that we face in day-to-day operations, and future capabilities and improvements still under development.I offer these observations on the deployment as a model for other companies who are contemplating a Hadoop-based solution over traditional sharded RDBMS deployments.

/pdf/apache-hadoop-goes-realtime-at-facebook-25mf7o9ess.pdf

Apache Hadoop Goes Realtime at Facebook

McCabe's cyclomatic complexity metric (1976) is widely cited as a useful predictor of various software attributes such as reliability and development effort This critique demonstrates that it is based upon poor theoretical foundations and an inadequate model of software development The argument that the metric provides the developer with a useful engineering approximation is not borne out by the empirical evidence Furthermore, it would appear that for a large class of software it is no more than a proxy for, and in many cases is outperformed by, lines of code<
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A critique of cyclomatic complexity as a software metric

Windows Azure被认为是Windows NT之后的16年来微软最重要的产品,微软计划将80%的资源和研发力量投入到云计算项目中。这种俨然押上未来的豪赌,是IT业的新潮流迫使微软做出了妥协,还是微软主动寻求新的霸主地位而酝酿的云计算新变革？

Windows Azure：微软押上未来

The Internet of Things (IoT) revitalizes the world with tremendous capabilities and potential to be utilized in vehicular networks. The Smart Transport Infrastructure (STI) era depends mainly on the IoT. Advanced machine learning (ML) techniques are being used to strengthen the STI smartness further. However, some decisions are very challenging due to the vast number of STI components and big data generated from STIs. Computation cost, communication overheads, and privacy issues are significant concerns for wide-scale ML adoption within STI. These issues can be addressed using Federated Learning (FL) and blockchain. FL can be used to address the issues of privacy preservation and handling big data generated in STI management and control. Blockchain is a distributed ledger that can store data while providing trust and integrity assurance. Blockchain can be a solution to data integrity and can add more security to the STI. This survey initially explores the vehicular network and STI in detail and sheds light on the blockchain and FL with real-world implementations. Then, FL and blockchain applications in the Vehicular Ad Hoc Network (VANET) environment from security and privacy perspectives are discussed in detail. In the end, the paper focuses on the current research challenges and future research directions related to integrating FL and blockchain for vehicular networks.

/pdf/integration-of-blockchain-technology-and-federated-learning-4d2x72cp.pdf

Integration of Blockchain Technology and Federated Learning in Vehicular (IoT) Networks: A Comprehensive Survey

A survey on forensic investigation of operating system logs

5G (The Fifth generation) is the state-of-the-art technology, which has the potential to create new interfaces for the daily used devices and networking components. To communicate with devices, wireless technologies are generally used and also 5G plays a major role in connecting larger number of users to provide smarter and faster communications. This is majorly designed for achieving better coverage, bandwidth, reliability & latency, which can grow faster across the globe. Basically, the concept behind the 5G and wireless technology is to reduce the load & stabilize the technical solutions to enable applications for better mobile communication and utilized with latest applications in the business area. The current 4G network i.e long term evolution advanced (LTE - A) is not as good as 5G for meeting the demands of multiple unified communication devices that requires a very high data speed , low latency quality of service (QoS) , higher bandwidth and negligence interference. Henceforth, IoT (Internet of Things) & 5G plays a major role in mobile applications & network for e.g. health applications, smart watches, smart cities, smart cards, beacons, etc. The concept of 5G & IoT along with its implementation, specifications, potential challenges and other similar parameters related to the modern 5G technology are discussed in this paper.

Future Trends and Challenges in Next Generation Smart Application of 5G-IoT

Cloud computing is a new operation model providing utility services over a shared virtualized resources It is visualized that in future, Cloud can offer everything as a service (EAAS) Cloud Service Provider (CSP) makes infrastructure, platform and software services available over the Internet with greater flexibility at a lower cost Cloud computing paradigm enables users to access computing resources placed at a remote location The users also need not necessarily own these physical infrastructures As more and more service providers and users are getting added to the cloud environment, it has become an significant field attracting more attackers to perform malicious activities for financial gains Several approaches of security are being considered in order to resolve these threats and provide protection for the resources so that the potential of cloud computing can be exploited to the maximum Cloud forensics is an approach that attempts to investigate and analyze cloud security threats It will ensure that attackers will be more cautious to avoid prosecution for their illegal actions It acts as a deterrent, reducing network crime rate and improving security The paper aims to provide a better awareness of cloud forensics, understand some of the proposed frameworks and identify the research gaps and challenges The significance of this work is that it presents the state-of-the-art in cloud forensics, which will be very much useful for security practitioners and researchers

Cloud Forensics: State-of-the-Art and Research Challenges

5G is a modern technology that allows all end-user devices and network modules to provide new interfaces 5G can link higher user numbers concurrently using wireless technology to communicate with devices and have smarter, quicker predecessors 5G Network Infrastructure is planned to actively expand around the globe with varying latency, reliability, and coverage and bandwidth requirements But 5G isn't just a higher mobile broadband bandwidth that works on a different portion of the radio spectrum The definition of 5G technology in the sense of tons of wireless technologies allows the technological solution to be reworked to allow use cases outside conventional mobile connectivity, enabling new applications to be used in several sectors of the enterprise Current LTE-A (Long Term Evolution Advanced) 4G is inadequate to connect high data speeds, greater bandwidth, low service latency performance (QoS) and lower interference with different unified communication system requirements 5G aims to offer quicker download rates lower latency, greater capacity and more to address these obstacles The Internet of Things (IoT) solves these problems effectively and is used to restructure the globe in such a way that new devices have to be incorporated and linked without user intervention through a seamless connection

Advance Applications and Future Challenges of 5G IoT

Vehicular Ad hoc Networks (VANET) is an emerging and promising technology that provides real-time assistance to automobiles. An increasing rate of accidents on road has shown a need for an Intelligent Transportation System (ITS) which can generate signals and can intimate nearby automobiles. In such a dynamic environment, authenticity is a major challenge. Various authentication schemes already prevailing are discussed with their implementation.

Security Challenges, Applications and Vehicular Authentication Methods in VANET For Smart Traffic Management

Internet of Things might appear to be relatively a new term, but it came back in the year 1999. The considerable survey has been conducted regarding various aspects associated with the Internet of Things in last decade. Most of these are literature reviews, targeting research challenges, applications, and architecture of Internet of Things. In this paper, we present a comprehensive multi-facet study and report of the paradigm Internet of Things. This paper focuses on components of Internet of Things. It also discusses how other Emerging Paradigms correlate with Internet of Things. Internet of Things and its Enabling Technologies, supported IoT platforms, are also deliberated. Finally, the work is concluded on applicability and open issues of research in the field of Internet of Things. Our paper would help the beginners to understand the paradigm of Internet of Things and also motivate the practitioners to further identify the appealing field for future perspectives.

https://ieeexplore.ieee.org/iel7/8168800/8229760/08229999.pdf

Priya Matta

Papers

Future Trends and Challenges in Next Generation Smart Application of 5G-IoT

Cloud Forensics: State-of-the-Art and Research Challenges

Advance Applications and Future Challenges of 5G IoT

Security Challenges, Applications and Vehicular Authentication Methods in VANET For Smart Traffic Management

All you want to know about Internet of Things (IoT)