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relates #3283
Internal performance update to how translations are fetched.
Motivation
Email template transformations take quite a bit of time when large-ish number of emails are produced. For example
application.event/decided
creates 1 email for each workflow handler:event-to-emails, disabled cache
(using 2019 Macbook Pro with 2,3 GHz 8-Core Intel Core i9)
Caching dictionary for tempura function reduces mean time by almost 100x. For same event, but using cached translation function:
event-to-emails, cache
Checklist for author
Remove items that aren't applicable, check items that are done.
Reviewability
Documentation
Testing
Follow-up