Search functionality not working so well at the momen

Hi,

the search functionality on the website is not working well at the moment, e.g.:

https://www.postgresql.org/search/?u=%2Fdocs%2F13%2F&q=pgbench

gives, not always, but frequently:

Error 503 Backend fetch failed
Backend fetch failed
Guru Meditation:
XID: 20253421

The same happens when searching the archives.

Regards
Daniel