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Showing 1 to 12 of 12 for “"sharding"”.
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Uma análise sistemática das soluções de sharding Blockchain
… a escalabilidade foi criado o conceito de sharding. Este trabalho propõe apresentar alguns modelos de sharding destacando suas particularidades e soluções de segurança
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An Arithmetic-Based Deterministic Centroid Initialization Method for the k-Means Clustering Algorithm
… collection of methods, referred to herein as the sharding centroid initialization algorithm family, often outperforms random initialization in terms of the required number of iterations for convergence and overall time-related metrics and is competitive or better in terms of the reported mean sum …
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Efficient parallel processing and fault tolerance in a streaming join system
… an end-to-end distributed system, specifically sharding and fault tolerance. In particular, we are able to leverage RiverJoin's automatic parallelization mechanism to provide a data stream sharding interface that allows for close-to linear speedup in stream joins, allowing arbitrarily fast …
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Scaling Privacy Perserving Payments
… privacy. However, as we analyze, conventional sharding methods pose privacy risks, prompting introduction of a ’tree of sharded trees’ design that preserves privacy at a modest increase of latency. We describe, implement and evaluate all three designs, and find that unmodified Tornado Cash …
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Vault : fast bootstrapping for cryptocurrencies
… delete old account state. Second, Vault allows sharding state across participants in a way that preserves strong security guarantees. Finally, Vault introduces the notion of stamping certificates that allow a new client to catch up securely and efficiently in a proof-of-stake system without …
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Understanding scalability in distributed ledger technology
… tps. Ethereum 2.0, known as Serenity, introduces sharding, proof of stake (Casper), plasma and state channels in and effort to scale the system. EOS uses a delegated proof of stake (DPoS) protocol, where 21 super-nodes, termed ‘block producers' (BPs), facilitate consensus, bringing about …
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The novel Proof of Efficiency (PoEf) Consensus Mechanism: improved efficiency and cybersecurity for Blockchain-based Supply Chain Management Systems.
… Fault Tolerance (PBFT) system. PoEf integrates sharding and a reputation-level score to enhance scalability and security. This mechanism dynamically adjusts the reputation of nodes based on their performance, ensuring high throughput, low latency, and scalability. Simulation results using …
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PUBLIC BLOCKCHAIN SCALABILITY: ADVANCEMENTS, CHALLENGES AND THE FUTURE
… solutions including Segregated Witness (Segwit), Sharding, and two-way pegged sidechains. Although these proposals are innovative, they still suffer from the blockchain trilemma of scalability, security, and decentralization. Moreover, at this time, little is known or discussed regarding factors …
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Mitigating the Cost, Performance, and Power Overheads Induced by Load Variations in Multicore Cloud Servers
… of data popularity variations in cloud servers. Sharding is a common technique to partition data among scale-out servers. Unfortunately, skewed popularity of data-elements can cause significant load imbalance among shard servers, leading to response time degradation. I design an augmented variant …
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Security and Privacy for Internet of Things: Authentication and Blockchain
… based system exploits a method, called Sharding, in which devices are grouped into smaller subsets to provide a scalable system. In addition to solving the scalability problem in blockchain, the proposed system is secured against the 51% attack in which a malicious node tries to gain …
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Resolving blockchain trilemmas
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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ON SCALABILITY OF BLOCKCHAIN TECHNOLOGIES
In this dissertation, we explore how to improve scalability of blockchains while maintaining their fundamental premise of decentralization. Scalable blockchains are capable of delivering a target throughput and latency in the presence of increasing workload. To this end, first we present …