What is the difference between service workers and web workers?

What is the difference between service workers and web workers?

Service workers are scripts that run in the background, separate from a web page, enabling features like push notifications and offline capabilities. Web workers, on the other hand, are used to run scripts in the background to avoid blocking the main thread, allowing for parallel processing.

Can you give me an example of when to use each?

Sure! Use a service worker when you want to cache resources for offline access or handle push notifications. Use a web worker when you need to perform heavy computations without freezing the user interface.

Are there any limitations to using service workers?

Yes, service workers can only be registered over HTTPS and have a lifecycle that includes installation, activation, and updates. They also cannot access the DOM directly.

What about web workers? Do they have limitations too?

Yes, web workers cannot access the DOM, and they communicate with the main thread via message passing. They also have a limited set of APIs available.