What is the max number of participants assets and transactions

Question

I want to know if there is a restriction on the maximum no. of participants, assets, transaction that hyperledger can support? Is there a rollback system if the transaction fails?

Answer 1

Yes, there will be limits.. But the limits are high enough for practical purpose.. 
Participants can take several forms:

• Organizations with a separate identity and potentially with their own CA, MSP, orders, endorsers, and committers in any combination
• Roles in chaincodes
• Identities with a specific role in an organization

But you can set a small limit if you want.. 

And, there rollback (ACID compliant, example) if the submission of a transaction fails.
The rollback will only return a success or failure.. It does not make any changes of the failure on the ledger..

There are mainly two modes of failure:

1. Fail during endorsement
2. Fail during commit