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Vertex-Centric Computation The Pregel model, introduced by Google in 2010, reimagines distributed graph computation around the vertex as the unit […]

Chunked Upload Protocol Uploading large files over HTTP without chunking is fragile. A 4GB video file uploaded in a single

Distributed locks appear deceptively simple — acquire a lock, do some work, release it — but implementing them correctly in

DNS Hierarchy: Root, TLD, and Authoritative Nameservers The Domain Name System is a globally distributed hierarchical database organized as an

Introduction Zero trust replaces implicit perimeter-based trust with continuous verification. The core principle is: never trust, always verify. Every request

Introduction Consistent hashing assigns keys to nodes such that adding or removing a node remaps only K/N keys on average,

Introduction Kubernetes orchestrates containerized workloads across a cluster, managing scheduling, scaling, self-healing, and networking. The control plane manages desired state

Introduction Blockchain is an append-only distributed ledger where each block cryptographically links to the previous one. Immutability is guaranteed by

Introduction Infrastructure as Code (IaC) manages infrastructure via version-controlled declarative configuration, enabling reproducible, auditable, and automated infrastructure provisioning. Changes go

Introduction Serving large language models (GPT-4, Llama) requires specialized infrastructure for low latency, high throughput, and GPU memory management. The

Introduction RAG (Retrieval-Augmented Generation) grounds LLM responses in retrieved external knowledge. By injecting relevant retrieved context into the prompt, RAG

Introduction Geospatial indexing enables efficient proximity queries — find all restaurants within 2km — over large datasets of lat/lng coordinates.

Introduction Time-series databases (TSDB) are optimized for append-heavy workloads of (metric, timestamp, value) triples. Metrics monitoring, IoT telemetry, and financial

Introduction Consensus algorithms allow a cluster of nodes to agree on a sequence of values despite node failures. They are

Introduction Authentication services verify who the user is; authorization services control what they can do. A centralized auth service handles