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Cost-Effective Data Feeds to Blockchains via Workload-Adaptive Data Replication [article]

Kai Li, Yuzhe Tang, Jiaqi Chen, Zhehu Yuan, Cheng Xu, Jianliang Xu
2020 arXiv   pre-print
This work presents GRuB, a cost-effective data feed that dynamically replicates data between the blockchain and an off-chain cloud storage.  ...  GRuB's data replication is workload-adaptive by monitoring the current workload and making online decisions w.r.t. data replication.  ...  Present GRuB, a Gas-efficient data feed by dynamically replicating data between the hybrid data storage on and off the blockchain.  ... 
arXiv:1911.04078v3 fatcat:jx6se5mti5cgdepyglxyr2v25q

iBatch: Saving Ethereum Fees via Secure and Cost-Effective Batching of Smart-Contract Invocations [article]

Yibo Wang and Qi Zhang and Kai Li and Yuzhe Tang and Xiapu Luo and Ting Chen
2021 pre-print
The iBatch mechanism supports a variety of policies, ranging from conservative to aggressive batching, and can be configured adaptively to the current workloads. iBatch automatically rewrites smart contracts  ...  With a functional prototype of iBatch, we conduct extensive cost evaluations, which shows iBatch saves 14.6%∼59.1% Gas cost per invocation with a moderate 2-minute delay and 19.06%∼31.52% Ether cost per  ...  For Gas efficiency, it employs a novel technique that replicates data feeds adaptively to the workload. IBATCH can complement GRuB's adaptive data-feed to achieve higher level of Gas efficiency.  ... 
doi:10.1145/3468264.3468568 arXiv:2106.08554v1 fatcat:yz2txx2iszgolnxefnukiyk6yq