8 min read Object storage is the foundation of modern cloud infrastructure. Amazon S3, Google Cloud Storage, and Azure Blob Storage store trillions […] Read article
8 min read Backtracking is the go-to technique for problems that require exploring all possible solutions: generating permutations, finding combinations, solving puzzles, and […] Read article
8 min read Designing a ride-sharing application like Uber or Lyft is one of the most comprehensive system design questions. It combines real-time […] Read article
7 min read A web crawler systematically browses the internet to download web pages for indexing, archiving, or data extraction. Google, Bing, and […] 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
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
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 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 Distributed consensus is the foundation that makes distributed systems reliable. Every replicated database, every coordination service, and every distributed lock […] Read article