Question
PRPC Server Architecture
Few questions on the PRPC topology:
1. Does PRPC Architecture support different Web And App Servers in a load balanced configuration ( Load Balancer --> Web Server (say A-1)--> App Server (say A-2)
a) If yes, is Apache- Tomcat relationship supported (both servers being different)
b) IBM HTTP- WAS relationship supported (both Servers being different)
Is there any affinity between a Web Server (say IHS) and a JVM, as in, even if there is one IHS for 2 JVM's, if a session has been established with the first JVM, would future requests always go to that JVM only?
2. What is the maximum number of JVM's a server can support ?
3. What is maximum memory which can be allocated to a JVM (is it 8GB)
The article doesnt actually provide an answer to my question. My question is more pertaining to the relationship between Web Server and App Server.
I am afraid, we do not have such article for PRPC 6.3.x.
Regarding a) and b) combinations, I believe, these are Software industry standard combinations which Pega too supports.
Also, can Web Servers have a 1 to Many Relation with an App Server. If yes, is Load Balancer model supported in this Architecture.
Yes, it is...
This is standard setup and Server administrators should help you in this.
1. Does PRPC Architecture support different Web And App Servers in a load balanced configuration ( Load Balancer --> Web Server (say A-1)--> App Server (say A-2)
a) If yes, is Apache- Tomcat relationship supported (both servers being different)
b) IBM HTTP- WAS relationship supported (both Servers being different)
Is there any affinity between a Web Server (say IHS) and a JVM, as in, even if there is one IHS for 2 JVM's, if a session has been established with the first JVM, would future requests always go to that JVM only?
Ans:- You can have cross platforms if your infra team recommends this.
Apache IHS as LB --> Weblogic or WebSpehere as App Server. OR Vice Versa
2. What is the maximum number of JVM's a server can support ?
Ans:- Didn't get the query. Wchih server are you referring. Is it Linux? or LB?
3. What is maximum memory which can be allocated to a JVM (is it 8GB)
Ans:- There is no limit on XMX, you can have the limit which ever it supports 64bit JVMs.
This has to be decided based on application tuning. (Users, Hit Ratio, Usage of Applications, etc..)
Hi,
Did you go through High availability admin guide? Following is URL to find this guide:
https://pdn.pega.com/documents/pega-722-high-availability-administration-guide
Hope this helps you in finding your answers pertaining to Pega Server Topology.
Regarding max memory, it depends upon network topology, depends upon if server is 32 bit or 64 , user load etc.