In decentralized networks like Bitcoin and Ethereum, temporary forks are an inevitable part of consensus. They happen when two miners or validators produce valid blocks at nearly the same time. The sequence looks like this: Simultaneous Discovery: Miner A and Miner B both find a valid Block 100 independently Network Propagation: Some nodes receive Miner…
Cloud storage systems face a fundamental trade-off: you can’t have everything at once. The consistency model you choose directly impacts latency, availability, and how complex your application logic needs to be. Here’s what you actually need to know to pick the right one. Strong Consistency Guarantees that any read returns the most recent write. After…
A Byzantine Fault occurs when a component in a distributed system behaves unpredictably or maliciously—sending contradictory information to different parts of the system, corrupting data, or deviating entirely from the protocol. The result is potential inconsistency across the network, making consensus impossible without proper safeguards. The term originates from the Byzantine Generals Problem, a thought…
In distributed systems like blockchains, consensus is the mechanism by which all nodes agree on a single version of the ledger state. Without it, a decentralized network falls apart—you’d have conflicting transaction histories, double-spending, and no way to determine which version is authoritative. Consensus algorithms solve this by providing cryptographic or economic guarantees that make…
Proof of Stake is a consensus mechanism that secures blockchain networks by having validators lock up cryptocurrency as collateral. Instead of the energy-intensive mining required by Proof of Work, PoS creates economic incentives: validators earn rewards for honest participation, and lose staked funds if they misbehave or go offline. This “slashing” mechanism makes attacking the…
A blockchain is a distributed, immutable ledger that records transactions across a network of computers. Each participant maintains a complete copy of the ledger. Once data is written, it cannot be altered or deleted without the modification becoming immediately visible to the entire network. Unlike traditional databases managed by a single authority (a bank, corporation,…
This post covers .NET Core 2.1, which released in May 2018. Some of the predicted features below didn’t materialize as described; we’ll clarify what actually landed versus what was speculated. What is .NET Core? .NET Core is Microsoft’s open-source, cross-platform runtime for building applications in C#, F#, and Visual Basic. Unlike the monolithic .NET Framework…
Cosmos is Microsoft’s internal petabyte-scale distributed data storage and query system, built to handle massive analytical workloads across their infrastructure. While Microsoft hasn’t published formal technical papers on Cosmos, information has surfaced through conference talks and engineering blogs over the years. Architecture and Scale Cosmos operates at truly massive scale: Storage capacity: Approximately 62 physical…