--- title: Configuring size limits description: You can configure size limits, which include values in the IdP Session Registry, the SP Session Registry, the Inter-Request State management service, and others. component: pingfederate version: 13.1 page_id: pingfederate:administrators_reference_guide:pf_config_size_limits canonical_url: https://docs.pingidentity.com/pingfederate/13.1/administrators_reference_guide/pf_config_size_limits.html llms_txt: https://docs.pingidentity.com/pingfederate/llms.txt docs_for_agents: https://developer.pingidentity.com/build-with-ai/docs-for-agents.md revdate: July 5, 2022 section_ids: steps: Steps --- # Configuring size limits You can configure size limits, which include values in the IdP Session Registry, the SP Session Registry, the Inter-Request State management service, and others. ## Steps 1. To configure a size limit, edit the `/pingfederate/server/default/conf/size-limits.conf` file. 2. Modify the applicable settings. The setting are described in the following table. | Setting | Description | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | The IdP Session Registry stores SLO-related session information for IdP adapters, as well as for IdP and SP connections that a user has interacted with. It also stores sessions for PingFederate's Authentication Sessions feature. | | | IdpSessionRegistryMapImpl.max.sessions | This setting controls the maximum number of user sessions (for SLO or Authentication Sessions) kept in memory. When this limit is reached, sessions are removed on a least-recently-used basis.The default setting is 10000. | | IdpSessionRegistryMapImpl.max.individual.sessions | This setting controls the maximum number of IdP adapter or IdP connection sessions per user session. When this limit is reached, sessions are removed on a first-in first-out basis.The default setting is 500. | | IdpSessionRegistryMapImpl.max.partner.sessions | This setting controls the maximum number of SP connection sessions per IdP adapter or IdP connection session. When this limit is reached, sessions are removed on a first-in first-out basis.The default setting is 500. | | IdpSessionRegistryMapImpl.max.user.keys | This setting defines the maximum number of unique user keys that can be tracked. When this limit is reached, user keys are removed on a least-recently-used basis.The default setting is 50000. | | IdpSessionRegistryMapImpl.max.user.key.sris | This setting defines the maximum number of SRIs (browser sessions) that can be tracked for a given unique user key. When this limit is reached, SRIs are removed and revoked on a least-recently-used basis.The default setting is 100. | | IdpSessionRegistryMapImpl.expiry.mins | This setting defines the expiry period for user sessions in minutes. If no activity has been seen for a given user session for this period, it will be removed.The default setting is 1440 | | The SP Session Registry stores SLO-related session information for SP adapters and IdP connections that a user has interacted with. | | | SpSessionRegistryMapImpl.max.sessions | This setting controls the maximum number of user sessions kept in memory. When this limit is reached, sessions are removed on a least-recently-used basis.The default setting is 10000. | | SpSessionRegistryMapImpl.max.individual.sessions | This setting controls the maximum number of SP adapter sessions per user session. When this limit is reached, sessions are removed on a first-in first-out basis.The default setting is 500. | | SpSessionRegistryMapImpl.expiry.mins | This setting defines the expiry period for user sessions in minutes. If no activity has been seen for a given user session for this period, it will be removed.The default setting is 1440. | | The Inter-Request State Management service has two maps. The 'state' map is used to store short-lived state information between requests within an SSO or SLO transaction. The 'attr' map is used by adapters (such as the HTML form adapter) to store user session attributes. | | | InterReqStateMgmtMapImpl.max.size.state.map | This setting controls the maximum number of user sessions in the state map. When this limit is reached, sessions are removed on a least-recently-used basis.The default setting is 10000. | | InterReqStateMgmtMapImpl.expiry.mins.state.map | This setting controls the expiry period for user sessions in the state map. If no activity has been seen for a given user session for this period, it will be removed.The default setting is 30. | | InterReqStateMgmtMapImpl.max.size.attr.map | This setting controls the maximum number of user sessions in the attribute map. When this limit is reached, sessions are removed on a least-recently-used basis.The default setting is 10000. | | InterReqStateMgmtMapImpl.expiry.mins.attr.map | This setting controls the expiry period for user sessions in the attribute map. If no activity has been seen for a given user session for this period, it will be removed.The default setting is 1440. | | InterReqStateMgmtMapImpl.max.session.attrs | This setting controls the maximum number of attributes stored in the attribute map for a given user session.The default setting is 500. | | SessionRevocationServiceMapImpl.max.revoked.sris | This setting controls the maximum number of revoked session identifiers kept in memory. When this limit is reached, revoked identifiers are removed on a first-in first-out basis.The default setting is 50000. | | MetadataDirectory.max.size.idp.conn.map | This setting controls the maximum number of IdP connections kept in memory. When this limit is reached, connections are removed on a least-recently-used basis.The default setting is 10000. | | MetadataDirectory.max.size.sp.conn.map | This setting controls the maximum number of SP connections kept in memory. When this limit is reached, connections are removed on a least-recently-used basis.The default setting is 10000. | | ClientManagerXmlFileImpl.max.size.clients.map | This setting controls the maximum number of OAuth clients kept in memory. When this limit is reached, clients are removed on a least-recently-used basis.The default setting is 10000. | 3. Restart PingFederate.