Performance Evaluation of Permissioned-based Personal Data Vault Implemented Using Hyperledger Fabric v2.x

Blockchain is a fundamental technology that can decentralize how we organize, share, and preserve data and information. This paper evaluates and improves the performance of our Personal Data Vault (our ongoing framework) by focusing on Hyperledger Fabric (HLF) version 2.x (v2.x), one of the most popular open source and highly scalable permissioned blockchains, particularly taking advantage of their new chaincode lifecycle. We conducted several experiments using the Hyperledger Caliper Benchmark version 0.4.2 (v0.4.2), a performance measuring tool. First, we observed changes in performance by varying network parameters (e.g., block size, endorsement policy (EP), number of clients). Then, for further evaluation, we selected sets of network parameters that showed the best performance for a given number of clients. A first selected set of network parameters showed significant improvements in throughput and average latency compared to the parameters that were not selected. And, a second selected set of network parameters out-performed the first in almost every way. These improvements were obtained by using a faster smart contracts lifecycle.