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AI Cyberspace
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AI Cyberspace

AI, big data, cloud computing, and networking.

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Recent Articles

Latest from AI Cyberspace

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AI Cyberspace
AI Cyberspace
Apr 10, 2023 · Fundamentals

Mastering TCP: Header Structure, Handshake, Flow & Congestion Control Explained

This comprehensive guide delves into TCP’s core mechanisms—including header fields, segmentation and reassembly, the three‑way handshake and four‑step termination, sliding‑window flow and congestion control, retransmission strategies, and connection design patterns—providing a solid foundation for network engineers and developers.

Congestion ControlFlow ControlNetwork Protocol
0 likes · 26 min read
Mastering TCP: Header Structure, Handshake, Flow & Congestion Control Explained
AI Cyberspace
AI Cyberspace
Apr 9, 2023 · Fundamentals

Unlocking PCIe: From Bus Basics to Linux Device Enumeration

This article explains the fundamentals of computer bus systems, details the architecture, transmission rates, and components of PCIe, and guides readers through PCIe device enumeration, BDF numbering, BAR addressing, and Linux sysfs interfaces for PCIe devices.

BARBDFBus Architecture
0 likes · 15 min read
Unlocking PCIe: From Bus Basics to Linux Device Enumeration
AI Cyberspace
AI Cyberspace
Apr 6, 2023 · Fundamentals

Understanding IPv4: Header Structure, Fragmentation, and CIDR Explained

This article provides a comprehensive overview of IPv4, detailing the header fields, fragmentation and reassembly processes, MTU considerations, Path MTU Discovery, address formatting, classful and classless (CIDR) addressing, subnetting techniques, and network aggregation strategies.

CIDRFragmentationIP header
0 likes · 14 min read
Understanding IPv4: Header Structure, Fragmentation, and CIDR Explained
AI Cyberspace
AI Cyberspace
Apr 5, 2023 · Fundamentals

How ARP Resolves IP to MAC Addresses and Secures Your Network

This article explains the ARP protocol's role in translating IPv4 addresses to MAC addresses, details its packet structure, operation flow, security risks like spoofing and MAC conflicts, and provides Linux commands and configuration tips for managing ARP, Proxy ARP, ARP Probe, and Gratuitous ARP.

ARPAddress ResolutionLinux
0 likes · 19 min read
How ARP Resolves IP to MAC Addresses and Secures Your Network
AI Cyberspace
AI Cyberspace
Apr 4, 2023 · Fundamentals

Mastering Linux Socket I/O: Blocking, Non‑Blocking, and Epoll Explained

This article explains the two‑stage socket I/O process in Linux, compares blocking, non‑blocking, and I/O multiplexing techniques, details the select, poll, and epoll APIs with their advantages and drawbacks, and provides complete C code examples for a high‑performance TCP server and client.

BlockingCI/O
0 likes · 20 min read
Mastering Linux Socket I/O: Blocking, Non‑Blocking, and Epoll Explained
AI Cyberspace
AI Cyberspace
Apr 2, 2023 · Fundamentals

From ALOHA to Ethernet: How Early Wireless Protocols Shaped Modern Networks

Tracing the evolution from the pioneering 1968 ALOHA wireless network and its collision‑avoidance protocol to the birth and successive generations of Ethernet, this article details key milestones, technical innovations, and the lasting impact on today’s high‑speed wired networking standards.

ALOHACSMA/CDEthernet
0 likes · 16 min read
From ALOHA to Ethernet: How Early Wireless Protocols Shaped Modern Networks
AI Cyberspace
AI Cyberspace
Apr 1, 2023 · Fundamentals

From ARPANET to SDN: How the Internet Evolved Over 60 Years

This article traces the Internet’s evolution from Cold‑War‑era research projects like ARPA and ARPANET through the birth of TCP/IP, HTTP, REST, and the rise of SDN, OpenFlow, and P4, highlighting key milestones, standards, and the ongoing push toward fully programmable networks.

HTTPInternet HistoryNetworking
0 likes · 40 min read
From ARPANET to SDN: How the Internet Evolved Over 60 Years
AI Cyberspace
AI Cyberspace
Mar 29, 2023 · Fundamentals

Mastering POSIX Threads: From User Threads to Thread Pools in Linux

This article explains the concepts of user threads, the pthread library implementation, thread creation and termination functions, synchronization mechanisms like mutexes and condition variables, and demonstrates how to design and use a lightweight C thread‑pool with practical code examples.

C programmingLinuxThread Pool
0 likes · 21 min read
Mastering POSIX Threads: From User Threads to Thread Pools in Linux
AI Cyberspace
AI Cyberspace
Mar 28, 2023 · Fundamentals

Why NUMA Slows Multithreaded Apps and How to Optimize It

This article explains NUMA architecture, its multithreaded performance overheads such as remote memory access, cache synchronization, context and mode switches, interrupt handling, TLB misses, and memory copies, and then presents optimization techniques like NUMA and CPU affinity, IRQ tuning, and large‑page usage.

LinuxNUMAPerformance
0 likes · 20 min read
Why NUMA Slows Multithreaded Apps and How to Optimize It