Fabric v3.1.0 introduced a new performance optimization that allows ledger reads and writes to be performed in batches. This feature is described in the Peer to Chaincode Communication Optimization RFC.

fabric-chaincode-go provides a reference implementation of this functionality, which should be replicated by the Java chaincode libraries.

Implementation is composed of these component parts:

• Configuration of batching based on peer capabilities when a connection is established
• Modifications to PutState (and PutPrivateData) API functions
• An accompanying WriteBatch implementation to collect batched writes.
• Modification of handleInit and handleTransaction to ensure that batched writes are sent at the end of a client invocation
• New Stub API functions:
  • StartWriteBatch
  • FinishWriteBatch
  • GetMultipleStates
  • GetMultiplePrivateData