OptionalbudgetCap on retained node values, in bytes — [PND-PROCCACHE]. Unbounded when omitted, which is the behaviour every existing caller has.
Bytes rather than entries because entries are not the unit anyone
has a limit in: one node over 1M rows outweighs fifty over 5,000.
Enforced after each run, LRU, skipping any node whose consumer
still holds its outlet.
OptionalunitsConsumer-supplied units per raw column. A joined binding keys them
by qualified name — { 'AAPL:close': 'USD' }.
Options shared by both forms of bind.