Cloud Elasticity of Microservices-based Applications: A Survey

Abstract

Elasticity is an essential treatment in Cloudenvironment employed in academic and industrial contexts. The main purpose of elasticity is to reduce thedeployment cost while optimizing computing resources.Multiple studies were conducted to tackle classic applications using monolithic architecture deployed withvirtual machines (VMs). However, with the spread ofmicroservice pattern, recent studies have been investigating this new trend using containers. This paperclassifies and discusses existing approaches dealing withcloud elasticity. It provides a novel taxonomy for elasticapproaches while focusing on microservices-based solutions. We additionally specify the strength and theshortcomings of each class of works. As a conclusion,we report the challenges for microservices-based applications elasticity and provide requirements for futureinvestigations.