We have load balancing setup between two Ubuntu 18 servers running Odoo v13 CE. We have an issue with serialize and database cache signaling:
[login to view URL]: could not serialize access due to concurrent update - - -
2021-05-01 00:26:19,260 10753 INFO odoo [login to view URL]: Invalidating all model caches after database signaling.
The other issue is that loading the site, products, etc on the slave/replica server is slow, where as the master is fast. If we switch which server is the master, it follows. Meaning whichever server is the replica, its slow. Speed between servers is great, so we think its an Odoo database issue.
I'd be happy to pay hourly or fixed rate for this.