Improve performance by caching user requests count and decreasing stu… #724

Job	Run time
combine-environments	10s
pre-commit	12s
unit-tests (3.11)	3m 14s
type-check	35s
docs-build	24s
integration-tests (3.11, -integration)	1m 4s
distribution	0s
upload-to-pypi	0s
	5m 39s

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