Page Comparison

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Intent	Endpoint	Destination Module	Sample Response Time (ms)	Sample Response Time of Token Check (ms)
Initial request				99
Fetch user (making the request)	GET /users/{id}	mod-users	6
Fetch permissions	GET /perms/users?query=userId=={id}	mod-permissions	16
Generate downstream token			12
Fetch user (patron) by barcode	GET /users?query=barcode=={userBarcode}	mod-users	13	86
Fetch manual blocks	GET /manualblocks?query=userId=={userId}	mod-feesfines	133 a)	7
Fetch automated blocks	GET /automated-patron-blocks/{userId}	mod-patron-blocks	546*	27
Fetch item by barcode	GET /item-storage/items?query=barcode=={itemBarcode}	mod-inventory-storage	163**	10
Fetch holdings	GET /holdings-storage/holdings/{id}	mod-inventory-storage	57 d)	9
Fetch instance	GET /instance-storage/instances/{id}	mod-inventory-storage	22	7
Fetch location	GET /locations/{id}	mod-inventory-storage	9	13
Fetch library	GET /location/units/libraries/{id}	mod-inventory-storage	10	7
Fetch campus	GET /location/units/campuses/{id}	mod-inventory-storage	10	7
Fetch institution	GET /location/units/institutions/{id}	mod-inventory-storage	11	7
Fetch service point	GET /service-points/{id}	mod-inventory-storage	9	8
Fetch material type	GET /material-types/{id}	mod-inventory-storage	8	7
Fetch loan type	GET /loan-types/{id}	mod-inventory-storage	22	8
Fetch existing loans	GET /loan-storage/loans?query=status.name=="Open" and itemId=={itemId}	mod-circulation-storage	9	17
Fetch requests	GET /request-storage/requests?query=itemId=={itemId} and status==("Open - Not yet filled" or "Open - Awaiting pickup" or "Open - In transit" or "Open - Awaiting delivery") sortBy position/sort.ascending	mod-circulation-storage	10	9
Fetch circulation rules	GET /circulation/rules	mod-circulation-storage	18	18
Fetch loan policy	GET /loan-policy-storage/loan-policies/{id}	mod-circulation-storage	10	8
Fetch tenant locale	GET /configurations/entries?query=module=="ORG" and configName=="localeSettings"	mod-configuration	16	10
Fetch overdue fines policies	GET /overdue-fines-policies/{id}	mod-feesfines	19	8
Fetch lost item fees policies	GET /lost-item-fees-policies/{id}	mod-feesfines	11	10
Fetch opening days	GET /calendar/periods/7068e104-aa14-4f30-a8bf-71f71cc15e07/calculateopening?requestedDate={{dueDate}}	mod-calendar	12	8
Fetch user (patron) groups	GET /groups?query=id=={groupId}	mod-users	17	7
Update item status	PUT /item-storage/items/{id}	mod-inventory-storage	194	13
Create loan	POST /loan-storage/loan	mod-circulation-storage	16	8
Update patron action session	POST /patron-action-session-storage/patron-action-sessions	mod-circulation-storage	10	7
Fetch user	GET /users/{id}	mod-users	6	15
Fetch patron notice policy	GET /patron-notice-policy-storage/patron-notice-policies/1a821238-0cd9-48d9-a71a-057d33df0154	mod-circulation-storage	6	7

a) Now <= 22 ms because MODFEE-169 added an index, available since mod-feesfines v15.10.0 and >= v16.0.0, shipped with R1-2021-GA.

* The Vega team have already done some work to improve this

** The Core Platform team have already done work to improve thisd) I cannot confirm the 57 ms reported for GET /holdings-storage/holdings/{id}, the performance is the same as for GET /instance-storage/instances/{id} (<= 22 ms) because it uses a primary key lookup.
And the Core Platform team have already done MODINVSTOR-773 to improve this.