Production Recommendations

The following are some recommendations that you need to follow in a production environment:

Database
PPaaS is shipped with the H2 DB. However, in a production environment it is recommend to setup an external DB. For more information, see Configuring PPaaS with External Databases.
Health Statistic Monitoring
By default, PPaaS is shipped with an embedded WSO2 Complex Event Processor (CEP) for cartridge health statistic monitoring. It is recommended to use the embedded CEP only for testing purposes and to configure CEP externally in a production environment. Furthermore, the compatible CEP versions differ based on whether the CEP is internal or external. WSO2 CEP 3.0.0 is embedded into PPaaS. However, PPaaS uses CEP 3.1.0 when working with CEP externally. For more information, see Configuring WSO2 Complex Event Processor with PPaaS.

When using the external CEP, you need to disable the CEP that is embedded in PPaaS to avoid any errors that would arise whilst running PPaaS with the externally configured CEP. Disabling the internal CEP can be done at the time of starting the PPaaS server as follows:
```
sh <PRIVATE_PAAS_HOME>/bin/wso2server.sh start -Dprofile=cep-excluded
```
Metering and Monitoring
It is recommend to configure WSO2 Data Analytics Server (DAS) externally to handle the monitoring and metering aspect related to PPaaS in a production environment. For more information, see Configuring WSO2 Data Analytics Server with PPaaS.