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The purpose of this paper is to provide a comprehensive literature review on the application of information technology (IT) in Halal tourism. Halal tourism is a segment of the tourism business catering to Muslims in accordance with Islamic law, which has significant potential for economic growth and is an important export market for the global tourism industry.

Following the guidelines of Kitchenham, this study developed four research questions to achieve its objective. A systematic literature review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology, collecting and assessing 163 English-language publications published between 2016 and 2022, resulting in 18 relevant documents.

The review identified nine key research topics related to IT in Halal tourism, which are organized into three major themes: technology-enhanced Halal tourism, digital marketing and communications in Halal tourism and quality and satisfaction in Halal tourism.

This paper fills a gap in the existing literature by synthesizing the current research on the use of IT in Halal tourism. It also proposes potential areas for future research, such as developing artificial intelligence-powered applications for Halal tourism through the creation of a domain-specific knowledge graph.

Internet users and Web-based applications continue to grow every day. The response time on a Web application really determines the convenience of its users. Caching Web content is one strategy that can be used to speed up response time. This strategy is divided into three main techniques, namely, Web caching, Web prefetching and application-level caching. The purpose of this paper is to put forward a literature review of caching strategy research that can be used in Web-based applications.

The methods used in this paper were as follows: determined the review method, conducted a review process, pros and cons analysis and explained conclusions. The review method is carried out by searching literature from leading journals and conferences. The first search process starts by determining keywords related to caching strategies. To limit the latest literature in accordance with current developments in website technology, search results are limited to the past 10 years, in English only and related to computer science only.

Note in advance that Web caching and Web prefetching are slightly overlapping techniques because they have the same goal of reducing latency on the user’s side. But actually, the two techniques are motivated by different basic mechanisms. Web caching uses the basic mechanism of cache replacement or the algorithm to change cache objects in memory when the cache capacity is full, whereas Web prefetching uses the basic mechanism of predicting cache objects that can be accessed in the future. This paper also contributes practical guidelines for choosing the appropriate caching strategy for Web-based applications.

This paper conducts a state-of-the art review of caching strategies that can be used in Web applications. Exclusively, this paper presents taxonomy, pros and cons of selected research and discusses data sets that are often used in caching strategy research. This paper also provides another contribution, namely, practical instructions for Web developers to decide the caching strategy.