Updated default dynamic system setting for requestor pools
Valid from Pega Version 8.4
Clients can now enable or disable requestor pools for processing service requests using a new dynamic system setting called EnableRequestorPools with Pega-IntegrationEngine as the owning rulest. Previously, all deployments utilized requestor pools to improve service processing response efficiency; requestor pools eliminated overhead by automatically returning a requestor to the pool after it fulfills a service request. Starting in Pega Platform 8.4, requestor pools are disabled in Client-managed cloud deployments, since these deployments use autoscaling to handle service request traffic. Enabling requestor pools in Kubernetes environments is not recommended, because they can inhibit the default autoscaling settings in the environment.
Requestor pools remain enabled by default in Pega Cloud and on-premises environments.
To help clients navigate this change, Pega has updated its best practice guidance for configuring requestor pools. For an overview, see Requestor pooling for services. For guidance on the use of requestor pools in your application, see the EnableRequestorPools entry in Dynamic system settings data instances.
Upgrade impact
Requestor pools are disabled by default in Pega Platform 8.4 in client-managed cloud deployments. Clients who deployed previous versions of Pega Platform on a Kubernetes environment and who upgrade to Pega Platform 8.4 could see that their services behave differently.
What steps are required to update the application to be compatible with this change?
If clients that are deployed in a Client-managed cloud environment need to configure their services to use requestor pools and they understand how to configure requestor pools for their optimized use, these clients can re-enable requestor pools. Clients should review the best practice for configuring requestor pools before they re-enable requestor pools. To re-enable requestor pools, you modify the EnableRequestorPools setting in the Pega-IntegrationEngine Owning ruleset from “disabled” to Enabled [no value]. For details, see Editing a dynamic system setting.
Optimized data schema upgrade
Valid from Pega Version 8.5
Several improvements have been made to optimize the speed of the data schema upgrade to help you experience minimal downtime during upgrade to Pega Platform 8.5™. The data schema upgrade process optimizations include the following improvements:
- Optimized database index creation during upgrade
- Optimized synchronization process to detect duplicate rules during the application import process
- A new upgrade setting for Pega Cloud® Services operators that reduces the time to upgrade clients that run large Pega applications, such as the CRM Suite
For more information, see Limit upgrade downtime with data schema upgrade improvements (8.5).