8 min read Concurrency questions test your understanding of parallel execution, synchronization, and the subtle bugs that arise when multiple threads share state. […] Read article
9 min read Web security is a core competency for every backend and full-stack engineer. Security vulnerabilities are consistently the most expensive bugs 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
9 min read SQL query optimization is a critical skill for backend engineers and appears frequently in database-focused interviews. Understanding how the query Read article
9 min read Containers are the building blocks of modern cloud-native applications. Understanding how Docker works internally — Linux namespaces, cgroups, layered filesystems, Read article
8 min read Generating unique identifiers in a distributed system is a surprisingly complex problem. A simple auto-incrementing integer does not work when Read article
9 min read Load balancers distribute incoming traffic across multiple servers to ensure no single server becomes a bottleneck. They are a fundamental Read article
9 min read Object-oriented design questions test your ability to model real-world systems using classes, interfaces, and design patterns. These questions appear frequently Read article
10 min read Caching is the single most impactful performance optimization in distributed systems. A well-designed caching layer can reduce database load by Read article
9 min read Behavioral interviews evaluate how you have handled real-world situations in the past. Companies like Amazon, Google, and Meta use behavioral Read article
8 min read The system design interview evaluates your ability to design large-scale systems under ambiguity. Unlike coding interviews with a single correct Read article
9 min read Consistent hashing is a foundational algorithm in distributed systems that enables even data distribution with minimal disruption when nodes are Read article
9 min read How microservices communicate with each other determines the reliability, latency, and coupling of the overall system. This guide covers the Read article
9 min read Event-driven architecture (EDA) is the backbone of modern distributed systems. Instead of services calling each other synchronously, they communicate by Read article
