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IT Services Circle

Delivering cutting-edge internet insights and practical learning resources. We're a passionate and principled IT media platform.

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Latest from IT Services Circle

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IT Services Circle
IT Services Circle
Jul 12, 2026 · Backend Development

select, poll, and epoll: What’s the real difference? A deep dive into I/O multiplexing

This article explains the concepts of synchronous vs. asynchronous and blocking vs. non‑blocking I/O, outlines the five Unix I/O models, and then compares select, poll, and epoll—including their internal mechanisms, performance trade‑offs, edge‑ and level‑triggered modes, and why epoll is considered the solution to the C10K problem.

I/O multiplexingLinuxedge-triggered
0 likes · 17 min read
select, poll, and epoll: What’s the real difference? A deep dive into I/O multiplexing
IT Services Circle
IT Services Circle
Jul 12, 2026 · Operations

Why Facebook and Google Abandoned Git for Custom Version‑Control Systems

The article traces how a 2005 BitKeeper licensing dispute sparked the creation of Git, how Facebook’s massive monorepo crippled Git’s performance and led it to adopt and heavily extend Mercurial into Sapling, and how Google’s even larger codebase forced a clean‑room rebuild of a new VCS called Piper.

FacebookGitGoogle
0 likes · 10 min read
Why Facebook and Google Abandoned Git for Custom Version‑Control Systems
IT Services Circle
IT Services Circle
Jul 11, 2026 · Industry Insights

Why Does AI‑Generated Code Still Leave Enterprise R&D Efficiency Stagnant?

Although AI can produce up to 60% of the code, the article explains that coding is only a small part of the software development lifecycle, and the real bottlenecks—requirements gathering, design, testing, and maintenance—prevent AI from dramatically boosting overall R&D efficiency.

AI code generationGitHub studySoftware development process
0 likes · 6 min read
Why Does AI‑Generated Code Still Leave Enterprise R&D Efficiency Stagnant?
IT Services Circle
IT Services Circle
Jul 10, 2026 · Fundamentals

7 Essential Python Libraries for Robust Production Code

The article examines seven Python libraries—tenacity, attrs, structlog, DeepDiff, diskcache, watchdog, and msgspec—explaining when to adopt each, how they solve real‑world reliability, data‑modeling, logging, diffing, caching, file‑watching, and serialization problems, and when to replace them with heavier solutions.

CachingLibrariesPython
0 likes · 19 min read
7 Essential Python Libraries for Robust Production Code
IT Services Circle
IT Services Circle
Jul 10, 2026 · Artificial Intelligence

Which OS Is Best for Learning AI: macOS, Windows (WSL2) or Linux?

The article compares macOS, Windows (with WSL2), and Linux for AI development, highlighting macOS’s Unix foundation, unified memory architecture, low power consumption, and mature Docker support, while noting Windows + WSL2 as a viable option and Linux’s suitability for heavy model training.

AI DevelopmentApple SiliconDocker
0 likes · 6 min read
Which OS Is Best for Learning AI: macOS, Windows (WSL2) or Linux?
IT Services Circle
IT Services Circle
Jul 10, 2026 · Artificial Intelligence

GPT‑5.6: A Critical Look Beyond the Hype

The article reviews OpenAI’s GPT‑5.6 launch—Sol, Terra, Luna—detailing new Max/Ultra modes, official benchmarks that rank Sol first in coding agents but slightly behind Fable 5 in overall intelligence, cost advantages, SWE‑Bench shortcomings, and the author’s own Terra‑Ultra tests that reveal speed and stability concerns.

AI benchmarkingGPT-5.6SWE-bench
0 likes · 10 min read
GPT‑5.6: A Critical Look Beyond the Hype
IT Services Circle
IT Services Circle
Jul 9, 2026 · Artificial Intelligence

Musk Unveils Grok 4.5: First Benchmarks Reveal Its Strengths and Limits

SpaceXAI's Grok 4.5 arrives ahead of OpenAI's GPT‑5.6 Sol, delivering terminal‑bench scores of 83.3% and multilingual code‑fixing at 78.0%, while offering a striking $2/$6 per‑million‑token price and 80 TPS inference speed, yet still lagging behind top rivals on the hardest SWE‑Bench Pro tasks.

AI coding agentGrok 4.5SWE-bench
0 likes · 6 min read
Musk Unveils Grok 4.5: First Benchmarks Reveal Its Strengths and Limits