Low Level Design: Feature Flags System
4 min read A feature flag system enables runtime toggling of application features without deploying code. It decouples deployment from release and enables […] Read article
System Design
System Design
Low Level Design: System Design Interview Framework
6 min read System design interviews test your ability to think at scale, communicate trade-offs, and structure ambiguity into actionable plans. A repeatable Read article
System Design
Low Level Design: SOLID Principles in System Design
6 min read SOLID is an acronym for five object-oriented design principles introduced by Robert C. Martin (Uncle Bob). Originally articulated for class-level Read article
System Design
Low Level Design: Back-of-Envelope Calculations for System Design
4 min read Back-of-envelope calculations are a core skill in system design interviews. They let you quickly determine whether a single server suffices Read article
System Design
Low Level Design: Elasticsearch Internals
7 min read Elasticsearch as Distributed Lucene Elasticsearch is a distributed search and analytics engine built on top of Apache Lucene. Each shard Read article
System Design
Low Level Design: PostgreSQL Internals
8 min read Process Architecture PostgreSQL uses a multi-process architecture rather than threads. The postmaster is the root process: it listens for incoming Read article
System Design
Low Level Design: Redis Internals
7 min read Single-Threaded Event Loop Redis processes all client commands on a single main thread sequentially. This design eliminates the need for Read article
System Design
Low Level Design: Virtual Memory System
9 min read What Is a Virtual Memory System? Virtual memory is a foundational OS abstraction that gives each process the illusion of Read article
System Design
Low Level Design: CPU Cache Optimization
9 min read Why CPU Cache Optimization Matters Modern CPUs execute instructions in nanoseconds, but DRAM access takes ~80ns — roughly 200 CPU Read article
System Design
Low Level Design: Network Protocol Stack Internals
7 min read Overview of the Network Protocol Stack The network protocol stack is the layered software and hardware system responsible for transmitting Read article
System Design
Low Level Design: Migrating from Monolith to Microservices
7 min read Microservices migration is one of the most consequential architectural decisions an engineering organization makes. Done well, it unlocks team autonomy, Read article
System Design
Low Level Design: NoSQL Database Types Compared
9 min read Relational databases have been the default choice for decades, and for good reason — SQL is powerful, ACID transactions are Read article
System Design
Low Level Design: Concurrency Patterns
9 min read Concurrency is one of the hardest problems in systems design. Bugs are non-deterministic, hard to reproduce, and can corrupt data Read article
System Design
Low Level Design: Compression Algorithms
9 min read Compression is one of the highest-leverage primitives in systems design. It reduces storage cost, cuts network bandwidth, and often improves Read article
System Design
Low Level Design: Data Warehouse Architecture
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