Shop Public Relations System in The Cafeteria on Android Operating System

Abstract

This research project is aimed at developing a mobile application for promoting food outlets in university cafeterias on Android smartphones. The case study was conducted at Rajamangala University of Technology Krungthep with the objectives of promoting the sale of food items from various outlets in the cafeteria and providing convenience for users by offering decision-making information regarding cafeteria services, such as displaying the open/closed status of outlets, daily menu listings, saving favorite menu items, and allowing users to provide feedback on menu items. The research was developed based on system development principles, with the target population being cafeteria users. A sample group for assessing user satisfaction was selected using purposive sampling methods. The system was developed using Node.js, with data stored in Google Firebase. Performance testing was conducted using Apache JMeter, and user satisfaction was assessed using a 5-point Likert scale questionnaire. The research findings revealed that: 1) System performance testing showed an average response time of 10 seconds per transaction when 150 users accessed the system simultaneously, and 2) User satisfaction assessment yielded an average score of 4.60, indicating a high level of satisfaction, with a standard deviation of 0.61.