Använda metoder från Progressive Web Application för att lösa specifika problem i en webapplikation

Sammanfattning: Computers and similar units are taking a larger part in our lives and we expect ourwork tools to operate the same way the applications in our private units do. Qpick is awarehouse management software in the shape of a web application that is used onhandheld units with the operating system Android, and desktops with the operatingsystem Windows. The purpose of this thesis is to test and examine which well knowntechnical solutions can be used to solve specific problems in a web application.The study is a case study focusing on the software Qpick. To answer the thesis´ tworesearch questions, two Qpick users were interviewed and observed during a shift.Qpicks´ product owner and a Qpick technician were interviewed. The application wasexamined and underwent performance testing, before and after the implementation oftechnical solutions.The result proved that implementing a service worker is a solution to handle lack ofinternet access. Caching of resources is a solution to lower the load on the web serveras well as speeding up the application and making it more responsive. AJAX is asolution to keep the application up to date without having to update the wholeapplication, and not send or receive more information than necessary. localStorage isa solution to store data in the browser.