⏱ 6 min read Rate limiting protects APIs from abuse, prevents resource exhaustion, and ensures fair usage across clients. Designing a rate limiter is […] Read article

⏱ 7 min read Design a URL shortener is the most frequently asked system design interview question. It appears simple but covers core system Read article

⏱ 7 min read Database replication copies data across multiple servers to achieve high availability, fault tolerance, and read scalability. Understanding replication strategies — Read article

⏱ 8 min read A notification system delivers timely information to users through multiple channels — push notifications, email, SMS, and in-app messages. Companies Read article

⏱ 7 min read Multi-region architecture distributes your application across multiple geographic regions to achieve low latency for global users, high availability during regional Read article

⏱ 7 min read Infrastructure as Code (IaC) manages cloud infrastructure through declarative configuration files rather than manual console clicks. IaC enables version control, Read article

⏱ 8 min read Full-text search is a core feature of most applications — from e-commerce product search to log analysis to knowledge base Read article

⏱ 6 min read Capacity planning and back-of-envelope estimation are essential skills for system design interviews. Every design decision — whether to use a Read article

⏱ 7 min read Data serialization determines how structured data is encoded for storage and transmission. The choice between JSON, Protocol Buffers, Avro, and Read article

⏱ 8 min read Probabilistic data structures trade perfect accuracy for dramatic space savings. A Bloom filter can test membership in a set of Read article

⏱ 8 min read Continuous Integration and Continuous Delivery (CI/CD) pipelines automate the path from code commit to production deployment. A well-designed CI/CD pipeline Read article

⏱ 9 min read Understanding network protocols is fundamental to designing performant distributed systems. Every API call, database query, and cache lookup traverses the Read article

⏱ 9 min read Message queues are the backbone of asynchronous communication in distributed systems. Choosing the right message queue and understanding its guarantees Read article