物件導向軟體之架構(Object-Oriented Software Construction)探討

[서평]「Component Software」 - Beyond Object-Oriented Programming -

A new class of models, formalisms and mechanisms has recently evolved for describing concurrent and distributed computations based on the concept of ``coordination''''. The purpose of a coordination model and associated language is to provide a means of integrating a number of possibly heterogeneous components together, by interfacing with each component in such a way that the collective set forms a single application that can execute on and take advantage of parallel and distributed systems. In this chapter we initially define and present in sufficient detail the fundamental concepts of what constitutes a coordination model or language. We then go on to classify these models and languages as either ``data-driven'''' or ``control-driven'''' (also called ``process-'''' or ``task-oriented''''). Next, the main existing coordination models and languages are described in sufficient detail to let the reader appreciate their features and put them into perspective with respect to each other. The chapter ends with a discussion comparing the various models and some conclusions.

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Coordination models and languages

A super-peer is a node in a peer-to-peer network that operates both as a server to a set of clients, and as an equal in a network of super-peers. Super-peer networks strike a balance between the efficiency of centralized search, and the autonomy, load balancing and robustness to attacks provided by distributed search. Furthermore, they take advantage of the heterogeneity of capabilities (e.g., bandwidth, processing power) across peers, which recent studies have shown to be enormous. Hence, new and old P2P systems like KaZaA and Gnutella are adopting super-peers in their design. Despite their growing popularity, the behavior of super-peer networks is not well understood. For example, what are the potential drawbacks of super-peer networks? How can super-peers be made more reliable? How many clients should a super-peer take on to maximize efficiency? we examine super-peer networks in detail, gaming an understanding of their fundamental characteristics and performance tradeoffs. We also present practical guidelines and a general procedure for the design of an efficient super-peer network.

Designing an Super-Peer Network

All one needs to know about fog computing and related edge computing paradigms: A complete survey

: Designing, implementing, and operating microservices is known to be complex and costly, mainly due to the multitude of heterogeneous software services forming a microservice-based application. Such tasks can be simpler if a speciﬁcation of the microservice-based architecture (MSA) of an application is available. At the same time, due to the number of services and service interactions in a MSA, manually generating a speciﬁcation of such MSA is complex and costly. For this reason, in this paper we present a novel technique for automatically mining the speciﬁcation of a MSA from its Kubernetes deployment. The obtained MSA speciﬁcation is in µ TOSCA, a microservice-oriented proﬁle of the human- and machine-readable OASIS standard TOSCA. We also present a prototype implementation of our technique, which we use to assess it by means of case studies based on third-party applications.

Offline Mining of Microservice-based Architectures

Corrigendum to “Lightweight self-organising distributed monitoring of Fog infrastructures” [Future Gener. Comput. Syst. 114 (2020) 605–618]

Data-Aware Service Placement in the Cloud-IoT Continuum

Dynamic composition of parameterised logic modules

Deploying and managing in an efficient and adaptive way complex service-based applications across multiple heterogeneous clouds is one of the problems that have emerged with the cloud revolution The current lack of universally accepted standards supporting cloud interoperability is severely affecting the portability of cloud-based applications across different platforms The objective of the workshop was to provide a forum to discuss problems, solutions and perspectives of ongoing research activities aimed at enabling an efficient and adaptive management of service-based applications across multiple clouds

Antonio Brogi

Papers

Offline Mining of Microservice-based Architectures

Corrigendum to “Lightweight self-organising distributed monitoring of Fog infrastructures” [Future Gener. Comput. Syst. 114 (2020) 605–618]

Data-Aware Service Placement in the Cloud-IoT Continuum

Dynamic composition of parameterised logic modules

Workshop on Seamless Adaptive Multi-cloud Management of Service-Based Applications (SeaCloudS): Preface