Question
Wipro Ltd
IN
Last activity: 31 Jul 2019 9:48 EDT
How node level data page behave in multinode enviornment
I would like understand how the node level datapage behave in multi node environment. Assume there is a Node level data page D_Contacts, the data page is loaded into Node1.when the same data page is accessed in node2 or node 3, What would be the behavior ?
1. Will the datapage is get copied from Node1 and displayed or the system will load the data page in node2 freshly ? or
2. the datapage is getting copied to all nodes while it is loaded on Node1 ? Or
3. Any other behavior?
Coforge Technologies (Erstwhile Incessant Technologies)
GB
Node level data pages are loaded on all nodes simaltaneously, they have same data on all nodes. As per refresh strategy when the existing data page expires, all the nodes will get fresh data from data source.
Accenture
AU
I think the question was around whether the different dpages across nodes "talk" to each other. I think the answer is no, the dpages are running independently. I do not think they necessarily have the same data across nodes. When data expires, it is only reloaded when data is accessed again (not when it expires).
Pegasystems Inc.
IN
Data across nods does not necessarily have the same data across all the nodes. Assume the following set up.
Data Page Name: D_StatesList
Number of Nodes: 2
Number of users: 2
User 1 -> Node 1
User 2 -> Node 2
When User1 accesses Node1 and D_StatesList populates lets say there are 28 states.
After some time if User2 access Nodes and D_StatesList populates can have 29 states provided there is data added in the mean time.
Refresh strategy for node level can be time level where we can say reload for every day. And when the data is reloaded on the first name it is in sync with the one in Node 2.
Accenture
US
Assume there is a Node level data page D_Contacts, the data page is loaded into Node1.when the same data page is accessed in node2 or node 3, What would be the behavior ?
1. Will the datapage is get copied from Node1 and displayed or the system will load the data page in node2 freshly ? or
2. the datapage is getting copied to all nodes while it is loaded on Node1 ? Or
3. Any other behavior?
Assume there is a Node level data page D_Contacts, the data page is loaded into Node1.when the same data page is accessed in node2 or node 3, What would be the behavior ?
1. Will the datapage is get copied from Node1 and displayed or the system will load the data page in node2 freshly ? or
2. the datapage is getting copied to all nodes while it is loaded on Node1 ? Or
3. Any other behavior?
Answer: If D_Contacts got called only on node 1 then instance will be created only in that node 1 alone. When it gets referred again on node 2 and node 3, again respective DB or service calls will be called again and those respective copies will be created in those nodes.