Progressive Web Apps Development and Analysis with Angular Framework and Service Worker for E-Commerce System

E-commerce is a small, medium, and large business that sells and buys products online. In Indonesia, e-commerce has become one of the drivers of the nation's economic development. On the other hand, the development of information technology is growing rapidly. Many technologies have claimed to be reliable in developing web systems. In this research, reliable information technology has been implemented by using Progressive Web Apps (PWA). This technology combines the Angular framework as a user interface development, the Angularfire library as a link to the server, and a Service Worker to support the website in various network conditions. The process of performance testing and analysis of the system has been carried out with two types of systems, with Service Worker and without Service Worker, including the response time, throughput, and latency. Base on the results, it shows that this technology is fast and reliable, and it is suitable for the implementation of e-commerce systems.