A systematic overview of TCP congestion control algorithms: from classic Tahoe/Reno/NewReno to SACK and HSTCP, through BIC and CUBIC for high-performance networks, and a deep dive into delay-based approaches like Vegas and BBR, with comprehensive comparisons.
An in-depth analysis of TCP's retransmission mechanisms: from classic RTO estimation algorithms (Karn and Jacobson) to the Linux kernel's practical implementation, and optimization techniques like fast retransmit and selective acknowledgment (SACK).
Starting from formal language theory, this article explores the complete implementation of a regular expression engine: finite automata (NFA/DFA), Thompson's construction algorithm, subset construction, and Hopcroft's minimization algorithm — building an efficient regex engine from scratch.
A comprehensive guide to awk — a programming language hidden in the command line. Covers its working principle, built-in variables, pattern matching, control flow, and string functions with practical examples for text processing and data analysis.