⏱ 9 min read Compression is one of the highest-impact primitives in systems design. It reduces storage cost, cuts network bandwidth, and often improves […] Read article

⏱ 9 min read A data warehouse is a system optimized for analytical queries across large volumes of historical data. Unlike transactional databases, warehouses Read article

⏱ 10 min read An audit log is an immutable, chronological record of every significant action taken in a system — who did what Read article

⏱ 9 min read DNS (Domain Name System) is the internet’s distributed directory service — it translates human-readable hostnames like www.example.com into IP addresses Read article

⏱ 8 min read Idempotency is the property that an operation produces the same result whether it is applied once or multiple times. In Read article

⏱ 7 min read B-Tree Index Internals The B-tree (balanced tree) is the default index type in PostgreSQL, MySQL, and most relational databases. Understanding Read article

⏱ 8 min read The Three Pillars of Observability Observability is the ability to understand the internal state of a system from its external Read article

⏱ 7 min read Microservices decompose an application into independently deployable services. The communication layer between those services is where distributed systems complexity lives: Read article

⏱ 6 min read Dependency Injection (DI) is a design pattern and the practical application of the Dependency Inversion Principle (DIP). It removes hard-coded Read article

⏱ 7 min read Pipeline Types: Batch, Micro-Batch, and Streaming Data pipelines exist on a spectrum from latency to throughput: Batch ETL: Scheduled Spark Read article

⏱ 9 min read Why Graph Processing Is Hard A social network like Facebook or LinkedIn has billions of nodes (users) and hundreds of Read article

⏱ 9 min read What the Scheduler Does The Kubernetes scheduler is a control plane component with a single job: assign unscheduled pods to Read article

⏱ 5 min read Database replication copies data from one database server to one or more replicas. Replication underpins high availability, horizontal read scaling, Read article

⏱ 5 min read A distributed file system (DFS) stores data across multiple machines while presenting a unified namespace to clients. Google File System Read article

⏱ 6 min read The Consensus Problem Distributed systems need multiple nodes to agree on a single value — which server is the leader, Read article