by Petr Škoda.
Cron, external in transaction or failed events are passed to cron via DB table, we also store execution status in database table, the event data may be pretty big, it needs to be revalidated after reading in cron, db writes are anything but fast. Cron processing is a bottleneck already, we can not add more there. The current events were kind of designed by a comittee and overnegineered in my opinion, I have put everything I learned from it into the new spec.
I will add a new section explaining the record caching.
I will add a new section explaining the record caching.