Web Workers give front-end developers the freedom to offload heavy processsing tasks to separate threads. Service Workers take Web Workers even further by providing native application caching, which enables PWAs to run more efficiently and even offline!

In this talk, Michael Cole gives a solid introductory talk on the power of web workers, service workers, and how they enable Progressive Web Apps (PWAs).

You can watch the video on the PDX Node YouTube channel (22 minute watch).