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This note summarizes the key concepts of ACID properties (Atomicity, Consistency, Isolation, Durability) in database transactions and the definition of a transaction itself.

My detailed lecture notes on UDP, covering its fundamentals, how it compares with TCP, practical use cases, its advantages and limitations, and an overview of implementing a UDP server in Node.js and C.

A deep dive into the Internet Protocol (IP), covering IP packets, subnets, fragmentation, ICMP, and practical tools like ping and traceroute for backend systems.

A comprehensive review of the OSI model, networking layers, and communication fundamentals including session, presentation, transport layers, proxying, and execution in backend systems.

An in-depth look at backend communication protocols, including their properties, data formats, transfer modes, addressing, reliability, and error handling. This session explores classic and modern protocols such as TCP, UDP, HTTP, gRPC, and Homa.

A deep dive into backend communication patterns, protocols, and design tradeoffs. This weekly recap covers request-response models, synchronous vs asynchronous programming, real-time communication, and advanced patterns like Pub/Sub and sidecars.

A recap of the first week of backend communication fundamentals, covering Pub/Sub, Stateful vs Stateless Systems, Multiplexing, and the Sidecar Pattern.

Exploring real-time communication models and their tradeoffs in backend systems.