the delivery of computing services, including servers
and storage, as services over the internet.
Fundamental concepts such as virtualization as
elucidated by (Jain & Choudhary, 2016) and resource
pooling (Wang et al., 2014) underpin this model,
enabling flexible scalability and pay-per-use pricing
options. This section examines the principles and
architecture of cloud computing to establish a
foundation for subsequent discussions on algorithms.
The core principles of cloud computing can be
distilled into several key points: Firstly, users can
access required computing, storage, and network
resources from the cloud on-demand, without the
necessity of prior hardware acquisition and
configuration. Secondly, the cloud computing
platform encapsulates these resources into an
independent virtual resource pool, serving multiple
users through a multi-tenant model. This resource
pooling mechanism facilitates efficient resource
utilization, mitigating waste. Thirdly, the platform
dynamically adjusts resource allocation based on user
requirements, enabling elastic resource expansion.
When user demand increases, the platform
automatically augments resources; conversely, it
releases excess resources when demand diminishes,
thereby optimizing user costs. Fourthly, virtualization,
a core technology in cloud computing, enables
dynamic allocation and flexible management of
resources by encapsulating computing, storage, and
network resources into independent virtual
environments. This allows users to access required
computing resources and services through software
interfaces without direct interaction with physical
hardware. Cloud computing services are typically
stratified into three tiers: Infrastructure as a Service
(IaaS), Platform as a Service (PaaS), and Software as
a Service (SaaS).
These three service layers provide users with
comprehensive support, ranging from fundamental
resources to higher-level applications. They
implementation of cloud computing relies on several
key technologies, including as following.
Virtualization technology encapsulates computing,
storage, and network resources into independent
virtual environments, facilitating dynamic resource
allocation and flexible management. Distributed
computing approach utilizes multiple computers
working in concert to execute complex computational
tasks, enhancing overall computing efficiency. Data
management technology encompasses big data
processing, data storage, and data security
technologies, ensuring efficient data processing and
secure storage.To illustrate, a large financial
institution might employ cloud computing
technology to achieve rapid deployment and elastic
expansion of its business systems. Through cloud
services, banks can flexibly respond to business peaks
caused by holidays or emergencies, enhance system
stability and security, and reduce operational and
maintenance costs
3 ALGORITHMS FOR
DISTRIBUTED CLOUD
COMPUTING
Distributed cloud computing algorithms play a
crucial role in partitioning tasks across multiple nodes
while ensuring efficient execution and inter-node
communication. Recent literature published since
2020 by researchers demonstrates advancements in
frameworks akin to MapReduce and Directed Acyclic
Graph (DAG)-based systems like Apache Spark (e.g.,
Verbraeken et al., 2020; Ageed et al., 2020; Xu et al.,
2023). These studies elucidate the process of task
decomposition into components, their distribution to
nodes for processing, and subsequent aggregation to
produce final results. Moreover, they emphasize the
analysis of communication protocols that prioritize
data locality and mitigate network congestion. The
distributed computing paradigm involves dividing
computational tasks into subtasks, executing them
concurrently on multiple compute nodes, and
synthesizing the results. This approach offers several
advantages, including the ability to dynamically scale
compute resources based on demand and maintain
system functionality even in the event of node failures.
MapReduce, a seminal distributed computing model
proposed by Google, comprises two primary phases:
the Map phase, which partitions and processes input
data, and the Reduce phase, which aggregates the
Map phase outputs. The model's strengths lie in its
simplicity and robust fault tolerance.
Apache Spark, a DAG-based distributed
computing framework, enhances performance
through in-memory computing. Compared to
MapReduce, Spark's ability to reuse data across
multiple iterative computations significantly
accelerates processing speeds.Beyond MapReduce
and Spark, the distributed computing landscape
encompasses other significant algorithms, such as
distributed deep learning algorithms and graph
computing frameworks (e.g., Apache Flink). These
algorithms optimize data processing for specific use
cases. In distributed computing, communication
efficiency is a critical factor influencing overall
performance. Researchers have proposed various