Understanding Cryptocurrency
This is an introductional slides on understanding cryptocurrency.
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- Blockchain | Systems | Systems 101 | Tutorial
What is BTC SegWit and Its Impact on Transaction Fees
ByEric MaSegregated Witness (SegWit) is a protocol upgrade for Bitcoin that enhances its scalability and transaction efficiency. Introduced in 2017, SegWit addresses several limitations of the original Bitcoin protocol, including transaction malleability and block size constraints. Understanding SegWit What is SegWit? SegWit stands for “Segregated Witness,” referring to the separation of signature data from transaction data….
Understanding the Paxos Consensus Algorithm
ByEric MaThe Paxos consensus algorithm is a fundamental concept in distributed computing that ensures a group of distributed systems can agree on a single value, even in the presence of failures. Developed by Leslie Lamport, Paxos is widely used in systems where consistency and fault tolerance are critical, such as databases and distributed ledgers. Consensus Problem…
Data Consistency Models of Public Cloud Storage Services: Amazon S3, Google Cloud Storage and Windows Azure Storage
ByEric MaThe public cloud storage services like Amazon S3, Google Cloud Storage and Windows Azure Storage replicate the data to ensure high availability. On the other hand, with data being replicated, the storage services exhibits certain data consistency models. Different cloud service providers employ different data consistency models nowadays. In this post, we survey the data…
How to deactivate a LVM logical volume on Linux?
ByEric MaHow to deactivate a LVM logical volume activated by #vgchange -aay on Linux You may need to make a LVM volume group inactive and thus unknown to the kernel. To deactivate a volume group, use the -a (–activate) argument of the vgchange command. To deactivates the volume group vg, use this command # vgchange -a…
Decentralized Exchanges (DEX) vs. Centralized Exchanges (CEX): A Technical Comparison
Cryptocurrency exchanges have revolutionized the way we trade digital assets, with two main types of exchanges dominating the market: decentralized exchanges (DEX) and centralized exchanges (CEX). In this article, we’ll compare the DEX and CEX from a technical perspective. Decentralized Exchanges (DEX) DEX operate on a decentralized blockchain network, such as Ethereum, and are built…
Understanding the Raft Consensus Protocol
ByEric MaThe Raft consensus protocol is a distributed consensus algorithm designed to be more understandable than other consensus algorithms like Paxos. It ensures that a cluster of servers can agree on the state of a system even in the presence of failures. Key Concepts Raft divides the consensus problem into three relatively independent subproblems: Leader Election:…