Use LRU Cache for static entity cache

Either in this issue or a follow-up, we should remove or modify MigrateExecutable::attemptMemoryReclaim()

alexpott → changed the visibility of the branch 3498154-use-lru-cache to hidden.

re: slot count:

From #1199866-84: Add an in-memory LRU cache → , the thought was that this should be a much higher number then 300. So it is nice to see a number of 1000. Do we know if smaller hosting, e.g. an entry level pantheon plan will hold 1000 entity slots for 5-6 fields on a node or paragraph?

@heddn well atm the moment the number of slots in your cache is infinite so this is not really making anything worse. 5-6 fields on node is not that much - I tried to get the amount of memory used by a node on a production site with a complex data model. I think it might in the realms of 0.2mb per node... so a 1000 of them is about 200mb which is well within what I would expect you to be running a migrate job with. I expect that most sites nodes would take up considerably less space.