Start/notes.ini Parameters/LDAP_Disable_QRCache

LDAP_Disable_QRCache

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Parameter: LDAP_Disable_QRCache
Short description: Disables the LDAP query result cache so directory changes become visible via LDAP immediately – at the cost of performance.

Profile

Parameter
LDAP_Disable_QRCache
Category
HTTP / Web
Component
Server
Available since
9.0.1
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
0 = cache active (default), 1 = cache off

Description

The LDAP task in Domino caches search results so repeated queries can be answered quickly. In environments where directory data is frequently changed via the Notes Client / Admin Client and external LDAP consumers (e.g. iNotes, external apps, IAM systems) need to see the new state immediately, the cache can get in the way. LDAP_Disable_QRCache=1 switches it off – each LDAP search hits the Domino Directory index structures directly. Result: a consistent view at a higher load.

Example configuration

LDAP_Disable_QRCache=1

Notes & pitfalls

  • Noticeable performance loss with many LDAP search requests (e.g. SSO backends, address book lookups).
  • Before enabling, check whether LDAP_Disable_QRCache_Time or similar provides a suitable middle ground.
  • Takes effect after a restart of the LDAP task (tell ldap quit / load ldap or restart task ldap).
  • In master / replica setups, disabling only causes immediate visibility locally – replication latency remains.