Amount of Data in the session

Hi,
I would like to know what is the max amount of data that can be kept in a session. How does it impact on the performance?
Thanks,
Simi.

Hi,
actually I believe, that if we are speaking about multiple users each with its own HttpSession, in case of two users accessing the same session attribute in their own session, the actually used cache keys will not be the same.
On the other hand, this is probably not what you would really like, you would possibly like to share that data among sessions.
You should probably consider using either read-through caching with the CacheLoader implementor doing the expensive data retrieval (if the data to be cached can be obtained outside of an HTTP container), or side caching with using Coherence locks or entry-processors for concurrency control on the data retrieval operations for the same key (take care of retries in this case).
Best regards,
Robert

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LuI wrote:
>
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Jan

user10601659 wrote:
Suppose I want to store an amount of data that is too large to store in memory only (serveral GB's or TB's). The data needs to be highly available and fault tolerant and a user would need to query the data based on some criteria. Coherence would fit these requirements perfectly except for the fact that you would need to keep all data in memory before being able to query it using the filter API.
As I see it, the only possible way to make this happen is to store all this data in a database via a write-behind schema and query the db instead of the cache. This would make the db the single source of data instead of the cache. However, this would also seriously diminish the usefullness of the cache as you would now need to make sure the db is replicated and fault tolerant. You wouldn't even need the cache anymore as it's only purpose would be to pass the data to the db via the write-behind schema.
Is there another way to query the data not using a db query but using the coherence filter API and still storing the data somewhere outside the JVM's memory?
Best regards
JanHi Jan,
three things come to my mind regarding your post:
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3. You can query only a single cache with a Coherence filter. Would this be sufficient for your querying needs?
Best regards,
Robert

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Am using remote object services.
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Hi All ,
In Case of reading huge amount of record from BPC Cube from BADI code , performing calculations and writing back huge amount of data into the cube , It takes lot of time . If there is any suggestion to read the data from Cube or writing data into the cube using some Parallel Processing methods , Then Please suggest .
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SHUBHAM

Hi Gersh ,
If we have a specific server say 10.10.10.10 (abc.co.in) on which we are working, Then under RZ12 we make the following entry as :
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10.1010.10
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SHUBHAM

Exchange 2010 DAG Replication - too much data crossing the wire

I’m replicating 3 Exchange databases from our production active Exchange 2010 server across the WAN to another passive Exchange 2010 server at our DR site.
The Exchange server at the DR site does not have any active databases, i.e. no users are hitting that server.
We are running Update Rollup 8 for Exchange Server 2010 SP1 on both these servers.
The two sites are connected via a 10Mb/s MPLS connection and all the databases are in sync and the replication is working fine.
I have setup a network sniffer at the primary site and see a sizable amount of data crossing the wire from the production Exchange server to the DR Exchange server.
When I query the production Exchange server using the Tracking Log explorer and only choose the EventID ‘RECEIVED’ that should show me the amount of data that has been committed to the database.
If I choose a date range that is the same exact range that I have used to capture the raw data with my sniffer the amount of data the sniffer shows crossing the wire is 10 fold compared to what the Tracking Log Explorer shows.
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I would like to know why the data crossing the wire far exceeds the amount of data that is truly being sent/received from the primary exchange server.
Perhaps I’m simply not getting a true view of the amount of data being committed to the exchange server using the Tracking Log Explorer.
Maybe there is a better way to report how much data is being committed to the exchange databases.
Any assistance would be appreciated…

Two things.
1 - you must update Exchange to SP3 and a recent RU. Willard has already provided the links, which point back to my blog if you want to see the lifecycle map for Exchange 2010. SP1 has been out of support since January 2013. Time to move
on pllease
2 - Looking at the tracking log is not sufficient. I would not expect that to show everything.
I want to know what traffic you see as excessive. What ports are you seeing used here?
My money is on content indexing. CI will use additional traffic over and above log repl traffic. Expect CI traffic to be roughly the same again. You can test this by disabling CI on the database or stopping the services on the DR server.
To disable the CI for the database:
Set-MailboxDatabase DBName -indexEnabled $False
Or stop the Exchange search services on the DR box to leave production unaffected.
Again - you need to update Exchange. You would be better to do that now rather than when something breaks and Microsoft support cannot fully assist you since you are not uptodate.    I'll leave discussion of the security issues resolved
in recent Exchange RUs aside.
Cheers,
Rhoderick
Microsoft Senior Exchange PFE
Blog:
http://blogs.technet.com/rmilne
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Amount of Data in the session

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