Our production push ssl certificate is going to expire soon. If I generate a new certificate, will the other certificate remain valid until it is set to expire (at which point it must be replaced with the new certificate)?
Will both certificates work at the same time?
Just concerned about the timing. For our app, we host a push server and so do a few of our customers. I want to make sure creating a new certificate and updating our push server with the new certificate doesn't mess up our customers' push servers that will, for a time, still have the old certificate installed.
It seems like you don't invalidate the old certificate...
"You can generate a new certificate without revoking the old one, and use them simultaneously to ensure they are working before revoking the old one."
来源：https://stackoverflow.com/questions/9265815/renewing-production-push-ssl-certificate-apple-apns