Slides: https://docs.google.com/presentation/d/1crh5m2aDdZPAL07Zo1FtuAliwwghW6FMOEtXviA_BZo/edit
Service Workers are a great way to persist data in the browser cache for offline usage & faster load times. I will give an introduction, point out what it tries to do better than previous solutions and show different ways of using it, depending on the type of data to serve.