International Journal For Multidisciplinary Research

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Designing with High Availability: Achieving Fault Tolerance in Software Engineering through AWS Multi-Region Architectures

Author(s) Sai Krishna Chirumamilla
Country United States
Abstract High availability and fault tolerance are important objectives in contemporary software engineering for continuous service delivery. This becomes even more so if companies depend on their software applications to provide constant availability to clients. One of the most helpful approaches to enhancing the use of high availability is multi-region architectures, especially with AWS. AWS has a strong foundation that offers many services to enable navigation between regions to ensurefailover and disaster recovery. This paper examines how AWS multi-region approaches and configurations can improve fault tolerance and system availability by distribution, auto-recovery, and replication.AWS flexibly enables systems to be run across multiple geographically disparate sites or zones known as regions which helps to reduce the chances of services being out of order by virtue of region downtimes. This configuration ensures that if one region has gone unavailable because of natural disasters, technical breakdown and security incidents, another region takes over, thereby reducing the impact. The solutions and services provided by AWS include Traffic-Scaling Service- Amazon Route 53, Global Traffic Acceleration - AWS Global Accelerator, cross-region data replication – Amazon RDS, and distributed storage – Amazon S3. All these services contribute to the realization of fault tolerance and high availability in the cloud.Multi-region architecture can, therefore, be valuable when an organization seeks better disaster recovery, or it wants to meet its geographic latency goals or data sovereignty requirements. The issues and ideas associated with designing such systems, such as cost and latency minimization while maximizing data synchronization reliability, are also considered in the paper. Additionally, this paper will provide case studies with organizations that adopted AWS multi-region architectures to demonstrate the advantages and limitations of the concept.The results have revealed that while AWS multi-region architecture possesses a list of benefits, this solution’s implementation is best done with an understanding of the positive and negative impacts on complexity, cost, and fault tolerance. If designed correctly, multi-region systems can provide availability and reliability while providing the infrastructure that is needed to ensure that critical applications run through major outages.
Field Engineering
Published In Volume 3, Issue 6, November-December 2021
Published On 2021-11-09
DOI https://doi.org/10.36948/ijfmr.2021.v03i06.40677
Short DOI https://doi.org/g9btgr
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