Create a password reset link that will expiry after 30 mins in tha url

 To create a password reset link that will expire after 30 minutes in the URL, you can use a combination of a unique token (e.g. a randomly generated string) and a timestamp. When a user requests a password reset, you can generate a token and attach it to a URL along with the current timestamp. When the user clicks on the link, you can check the timestamp to see if 30 minutes have passed. If so, the link is expired and the user will need to request a new password reset.

Here's an example of what the URL might look like:

https://example.com/resetpassword?token=abcdefghijklmnopqrstuvwxyz&timestamp=1613792400

In this example, "abcdefghijklmnopqrstuvwxyz" is the token and "1613792400" is the timestamp (in Unix time format).

When the user clicks the link, your server can check the current timestamp and compare it to the timestamp included in the URL. If the difference is greater than 30 minutes, the link is expired and the password reset process should be halted.

Please note that this is a simple example, in real production environment, you should use more secure way of creating token and handling timestamp and also consider various security measures to protect your user's account.