Varnish bug in Firebase leads to my website disappearing from the Google Index

user_9604699 0
Viewed 499

There seem to be a nasty bug in Firebase Hosting or Cloud Function that prevents Googlebot from crawling pages. As a result, 80% of my website has disappeared on google search.

The error is: 

Error 503 first byte timeout
Guru Mediation
Details: cache-yvrl...
Varnish cache server

I have recorded a short video explaining the issue here

Does this ring a bell??

googlebot firebase varnish hosting
1 Answers

From a Varnish-Software blog post

first_byte_timeout (default: 60s) limits how long the processing time of the
backend may be. The first byte of the response must come down the TCP 
connection within this timeout.

Check varnishlog and check if Varnish can connect to your backend, sometimes it may be as simple as disabling a firewall

user_88332480
Related