XOX Fabric: A hybrid approach to blockchain transaction execution

Gorenflo, Christian; Golab, Lukasz; Keshav, Srinivasan

doi:10.1109/icbc48266.2020.9169478

Cited by 33 publications

(13 citation statements)

References 11 publications

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“…The orderexecute (OX) and the order-parallel execute (OXII) architectures follow the pessimistic approach while the execute-order-validate (XOV) architecture follows the optimistic approach. We show how Tendermint [38], ParBlocckhain [10], Hyperledger Fabric [15], Fast Fabric [28], Fabric++ [54], FabricSharp [52], and XOX Fabric [27] address the performance challenge of permissioned blockchain systems. Pessimistic approaches.…”

Section: Performancementioning

confidence: 99%

“…This happens because Fabric executes transactions in the first step and validates them in the last step, hence, if there is any read-write dependencies between transactions of the same block, it is not detected until the last step. Different techniques have been proposed to improve the performance of Fabric while still following its XOV architecture [27] FastFabric [28] uses different data structures and caching techniques, and parallelizes the transaction validation pipeline to increase Fabric's throughput for conflict-free transaction workloads. Fabric++ [54] employs concurrency control techniques from databases to early abort transactions or reorder them after the order phase to reconcile the potential conflicts.…”

Section: Performancementioning

confidence: 99%

“…FabricSharp [52] goes one step further and presents an algorithm to early filter out transactions that can never be reordered and also presents a reordering technique that eliminates unnecessary aborts (resulting from strong serializability guarantees of Fabric++ while Fabric requires serializability guarantees). Finally, XOX Fabric [27] model consists of a pre-order and a post-order execution step where the post-order execution is added after the validation step to re-execute transactions that are invalidated due to read-write conflicts. Discussion.…”

Section: Performancementioning

confidence: 99%

See 2 more Smart Citations

Permissioned Blockchains: Properties, Techniques and Applications

Amiri

Agrawal

Abbadi

2021

Proceedings of the 2021 International Conference on Management of Data

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The unique features of blockchains such as immutability, transparency, provenance, and authenticity have been used by many large-scale data management systems to deploy a wide range of distributed applications including supply chain management, healthcare, and crowdworking in permissioned settings. Unlike permissionless settings, e.g., Bitcoin, where the network is public, and anyone can participate without a specific identity, a permissioned blockchain system consists of a set of known, identified nodes that might not fully trust each other. While the characteristics of permissioned blockchains are appealing to a wide range of largescale data management systems, these systems, have to satisfy four main requirements: confidentiality, verifiability, performance, and scalability. Various approaches have been developed in industry and academia to satisfy these requirements with varying assumptions and costs. The focus of this tutorial is on presenting many of these techniques while highlighting the trade-offs among them. We demonstrate the practicality of such techniques in real-life by presenting three different applications, i.e., supply chain management, large-scale databases, and multi-platform crowdworking environments, and show how those techniques can be utilized to meet the requirements of such applications.

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Section: Performancementioning

confidence: 99%

Section: Performancementioning

confidence: 99%

Section: Performancementioning

confidence: 99%

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Permissioned Blockchains: Properties, Techniques and Applications

Amiri

Agrawal

Abbadi

2021

Proceedings of the 2021 International Conference on Management of Data

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“…Hyperledger Fabric [7], as a permissioned blockchain, introduces the execute-order-validate (XOV) architecture and leverages parallelism by executing the transactions of different applications simultaneously. Several recent permissioned blockchains, e.g., blockchain relational Database [48], ParBlockchain [4], Fast Fabric [27], XOX Fabric [26],…”

Section: Related Workmentioning

confidence: 99%

Saguaro: Efficient Processing of Transactions in Wide Area Networks using a Hierarchical Permissioned Blockchain

Amiri¹,

Lai²,

Patel³

et al. 2021

Preprint

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The next frontier for the Internet leading by innovations in mobile computing, in particular, 5G, together with blockchains' transparency, immutability, provenance, and authenticity, indicates the potentials of running a new generation of applications on the mobile internet. A 5G-enabled blockchain system is structured as a hierarchy and needs to deal with different challenges such as maintaining blockchain ledger at different spatial domains and various levels of the networks, efficient processing of cross-domain transactions, establishing consensus among heterogeneous nodes, and supporting delay-tolerant mobile transactions. In this paper, we present Saguaro, a hierarchical permissioned blockchain designed specifically for Internet-scale mobile networks. Saguaro benefits from the hierarchical structure of mobile network infrastructure to address the aforementioned challenges. Our extensive experimental results demonstrate the high potential of Saguaro being the first 5G-enabled permissioned blockchain system in the community.

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“…Applications have been proposed for various use cases, for example, banking, 5 transparency for personal data handling, 6 global trading, 7 Internet of Things, 8 and Community Mesh Networks 9 . Furthermore, there are research papers on the performance of the framework, 10 possible performance improvements, 11‐13 risks related to the implementation of a smart contract, 14 the mitigation of attacks by a malicious peer, 15 etc. This enterprise framework provides a so‐called permissioned blockchain, which is a shared ledger where the writers of the system, that is, the consensus participants, are formed by a restricted set of members.…”

Section: Related Workmentioning

confidence: 99%

Trustful ad hoc cross‐organizational data exchanges based on the Hyperledger Fabric framework

et al. 2020

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Organizations share data in a cross-organizational context when they have the goal to derive additional knowledge by aggregating different data sources. The collaborations considered in this article are short-lived and ad hoc, that is, they should be set up in a few minutes at most (e.g., in emergency scenarios). The data sources are located in different domains and are not publicly accessible. When a collaboration is finished, it is however unclear which exchanges happened. This could lead to possible disputes when dishonest organizations are present. The receipt of requests/responses could be falsely denied or their content could be point of discussion. In order to prevent such disputes afterwards, a logging mechanism is needed which generates a replicated irrefutable proof of which exchanges have happened during a single collaboration. Distributed database solutions can be taken from third parties to store the generated logs, but it can be difficult to find a party which is trusted by all participating organizations. Permissioned blockchains provide a solution for this as each organization can act as a consensus participant. Although the consensus mechanism

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XOX Fabric: A hybrid approach to blockchain transaction execution

Cited by 33 publications

References 11 publications

Permissioned Blockchains: Properties, Techniques and Applications

Permissioned Blockchains: Properties, Techniques and Applications

Saguaro: Efficient Processing of Transactions in Wide Area Networks using a Hierarchical Permissioned Blockchain

Trustful ad hoc cross‐organizational data exchanges based on the Hyperledger Fabric framework

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