What are Firebase security rules and how do I implement them?

What are Firebase security rules and how do I implement them?

Firebase security rules are a way to control access to your Firebase database. They allow you to define who can read or write data.

Can you give me an example of a simple security rule?

Sure! A simple rule could be: { "rules": { ".read": "auth != null", ".write": "auth != null" } } which allows only authenticated users to read and write.

How do I test these rules before deploying?

You can use the Firebase Emulator Suite to test your security rules locally before deploying them to production.

What happens if I set my rules too restrictively?

If your rules are too restrictive, legitimate users may be unable to access the data they need, which can lead to a poor user experience.