Main public logs

Combined display of all available logs of JOHNWICK. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 04:48, 22 November 2025 PC talk contribs uploaded File:Rust in Production- The Day I Realized Safety.jpg
• 04:46, 22 November 2025 PC talk contribs created page 7 Times Rust Made My Python Code Run 100x Faster (Created page with "If one hot function costs your company thousands of dollars per month, rewrite that function now. 500px Short. Direct. High stakes. Read this if latency or cost matter in your product. Why this article exists Python is an excellent orchestrator. The ecosystem is vast. Most problems can be solved inside Python with great libraries. However, when a single hot function dominates latency or cost, a surgical migration to Rust c...")
• 04:43, 22 November 2025 PC talk contribs created page File:7 Times Rust Made My Python Code.jpg
• 04:43, 22 November 2025 PC talk contribs uploaded File:7 Times Rust Made My Python Code.jpg
• 04:42, 22 November 2025 PC talk contribs created page The Rust Borrow Checker Saved My Career: A Memory Leak Detective Story (Created page with "500px The borrow checker forces you to untangle memory relationships before your code compiles — a frustrating teacher that saves you from production nightmares. 02:14 AM, production server down. Again. I was three years into what I thought would be a legendary career building high-frequency trading systems in C++. The reality? I spent more time hunting phantom memory leaks than writing actual features. That nigh...")
• 04:40, 22 November 2025 PC talk contribs created page File:The Rust Borrow Checker Saved My Career.jpg
• 04:40, 22 November 2025 PC talk contribs uploaded File:The Rust Borrow Checker Saved My Career.jpg
• 04:39, 22 November 2025 PC talk contribs created page 5 Times the Rust Borrow Checker Saved Me From Disaster (Created page with "The borrow checker stopped a production crash during a mid night deploy. The code looked fine until it did not. 500px This article shows five real failures that the borrow checker prevented.
Each story contains a short problem description, minimal code that caused the issue, the change that fixed it, and a measurable result.
Read one story. Fix one component. Ship safer code. 1. Prevented use after free in a server handler P...")
• 04:36, 22 November 2025 PC talk contribs created page File:5 Times the Rust Borrow.jpg
• 04:36, 22 November 2025 PC talk contribs uploaded File:5 Times the Rust Borrow.jpg
• 04:34, 22 November 2025 PC talk contribs created page I Don’t Need to Rewrite Go into Rust to Save Cost — I Just Use JavaScript! (Created page with "500px golang — notblessy Let me clarify before the Rust zealots start sharpening their cargo build knives: When I say “save cost,” I don’t mean infrastructure cost — I mean my personal cost — my time, my mental bandwidth, and yes, my income. I don’t want to spend six months rewriting something in Rust just to make a server 10% faster when that 10% doesn’t pay my bills. Because, spoiler alert: performa...")
• 04:33, 22 November 2025 PC talk contribs created page File:I Don’t Need to Rewrite Go.jpg
• 04:33, 22 November 2025 PC talk contribs uploaded File:I Don’t Need to Rewrite Go.jpg
• 04:31, 22 November 2025 PC talk contribs created page Rust - How to use map err to Handle Result (Created page with "We can call the map_err method on any Result value. If the Result is Err, map_err applies the function to transform the error. If the Result is Ok, it does nothing. In other words, we use map_err to manipulate the value inside an Err. https://youtu.be/3ZiRLOd6gjY?si=RdGFxxFyNE08ZPBQ fn main() { let b = hello(11).map_err(|e|{ println!("error : {}", e); format!("The error is {}", e) } ); println!("b: {:?}", b); } fn hello(a :...")
• 04:29, 22 November 2025 PC talk contribs created page Python vs. Rust: The Speed War No One Asked For (Created page with "500px Once every now and then, some programming language comparison descends upon social media. 
“Rust crushes Python in benchmarks!”
“Python remains the lord of productivity!” 
And then the comments blow up with programmers defending the language they like best in the style sports team. But the reality is — comparing Python and Rust based solely on speed is comparing a rocket and a bicycle. Both are moving...")
• 04:27, 22 November 2025 PC talk contribs created page File:Python vs. Rust- The Speed War .jpg
• 04:27, 22 November 2025 PC talk contribs uploaded File:Python vs. Rust- The Speed War .jpg
• 04:26, 22 November 2025 PC talk contribs created page 7 Reasons Rust Ownership Isn’t as Scary as You Think (Created page with "Introduction / Hook: Ownership in Rust scares almost every new developer. I know — it frightened me too. But the truth is, it is the single most powerful feature Rust gives you for safe, high-performance code. 500px By understanding a few core principles, you can write faster, bug-free applications without wrestling with complex memory management. Reason 1 — Ownership Prevents Memory Leaks Naturally Problem: In many lan...")
• 04:24, 22 November 2025 PC talk contribs created page File:7 Reasons Rust Ownership.jpg
• 04:24, 22 November 2025 PC talk contribs uploaded File:7 Reasons Rust Ownership.jpg
• 03:50, 22 November 2025 PC talk contribs created page Rust for Humans: Safety Without the Pain (Created page with "500px Image by Gemini You’re staring at a compiler error for the third time. The borrow checker rejected your code again. You know what you’re trying to do is safe — you can see it — but Rust won’t let you pass. Your cursor blinks. The room hums. And somewhere in the back of your mind, a voice whispers: maybe this language isn’t for me. Here’s the truth no one says cleanly enough: that feeling isn’t failure. It’s the exact...")
• 03:50, 22 November 2025 PC talk contribs created page File:Rust for Humans.jpg
• 03:50, 22 November 2025 PC talk contribs uploaded File:Rust for Humans.jpg
• 03:47, 22 November 2025 PC talk contribs created page Deadlocks We Deserved: How Rust Retries and Postgres Locks Finally Agreed (Created page with "500px Rust felt bulletproof until Postgres fought back. Our system could not go a week without a deadlock on the busiest tables, even as our retry logic grew cleverer. Metrics looked fine, then fell off a cliff without warning. The bug reports stacked up. We knew our code was safe, yet Postgres held all the cards — and for a long time, we played the wrong hand. Here is how we finally brokered a truce. When Safe Rust Still Loses to t...")
• 03:46, 22 November 2025 PC talk contribs created page File:Deadlocks We Deserved.jpg
• 03:46, 22 November 2025 PC talk contribs uploaded File:Deadlocks We Deserved.jpg
• 03:45, 22 November 2025 PC talk contribs created page Why Big Tech Companies Are Adopting Rust ? (Created page with "500px ver the past few years, a quiet revolution has been unfolding in the software world. If you have been following the technology landscape, you have probably noticed headlines like “Rust joins the Linux kernel”, “Microsoft rewrites core components in Rust”, or “Amazon builds cloud infrastructure in Rust”. As an architect, I tend to look beyond the hype and ask: Why are so many large technology companies investing...")
• 03:44, 22 November 2025 PC talk contribs created page File:Why Big Tech Companies .jpg
• 03:44, 22 November 2025 PC talk contribs uploaded File:Why Big Tech Companies .jpg
• 03:43, 22 November 2025 PC talk contribs created page We Bet the Product on a Rust Rewrite. Here Is What Happened Next (Created page with "We were burning through cash and time.
Every fix broke something else.
Our API was on fire. Logs flooded faster than we could read them.
Memory leaks piled up like sandbags in a storm.
The deadline loomed, and customers were leaving. The team was exhausted.
Every meeting ended with the same phrase: “Maybe next sprint.” Then someone said it — half-joking, half-serious.
“Why not rewrite the hot path in Rust?” Silence.
Then nods.
That was the mome...")
• 03:43, 22 November 2025 PC talk contribs created page File:We Bet the Product on a Rust.jpg
• 03:43, 22 November 2025 PC talk contribs uploaded File:We Bet the Product on a Rust.jpg
• 03:40, 22 November 2025 PC talk contribs created page We Switched One Endpoint To Rust. p99 Fell 10×. Our Sprints Slowed 2×. Here’s The Fix (Created page with "500px I’ll keep this brief. Our graphs moved the way you hope. Latency fell hard. CPU and incidents fell with it. Then our sprint velocity slowed. This is what actually happened, what we changed, and the exact code at the center. The Night The Graphs Flipped Payments spiked at 8:42 p.m. IST. The legacy path sat near ~280 ms p99. The Rust path, same business logic and database, ran around ~28 ms p99. Throughput doubled on th...")
• 03:40, 22 November 2025 PC talk contribs created page File:We Switched One Endpoint.jpg
• 03:40, 22 November 2025 PC talk contribs uploaded File:We Switched One Endpoint.jpg
• 01:05, 22 November 2025 PC talk contribs created page The Secret Rust Design Patterns That Make Your Code Bulletproof (Created page with "Most Rust tutorials teach you the basics. But there are patterns experienced Rust developers use that never show up in beginner guides. 500px These aren’t fancy tricks. They’re battle-tested approaches that prevent entire categories of bugs. The Typestate Pattern Make invalid states unrepresentable. The compiler enforces your business rules. struct Locked; struct Unlocked; struct Door<State> { state: std::marker...")
• 01:02, 22 November 2025 PC talk contribs created page 6 Real Scenarios Where Unsafe Rust Was the Right Move (Created page with "500px This article shows six real scenarios where using unsafe produced measurable wins, why the tradeoffs were worth it, and how to keep the code maintainable and auditable. Why this matters now Rust offers a unique balance: memory safety without a garbage collector. However, safety checks carry cost in a few tight places. The job of a senior engineer is to choose the right tool for the job and to contain risk. Each example below fol...")
• 01:00, 22 November 2025 PC talk contribs created page File:6 Real Scenarios.jpg
• 01:00, 22 November 2025 PC talk contribs uploaded File:6 Real Scenarios.jpg
• 00:59, 22 November 2025 PC talk contribs created page Java 23 vs. Rust on the Hot Path: Where GC Still Wins (Created page with "500px We chased sub-millisecond p99. Rust beat Java — until we changed how we allocate.
A single tweak to object lifetimes put Java back in the lead and shaved 18% CPU.
On the hot path, the garbage collector wasn’t the villain. It was the secret weapon. The Hot Path That Started the Fight A request fan-out: parse 2–4 KB JSON, hit three caches, stitch a 1 KB response. At 420k req/s on 32 cores, Java 23’s p99 hovered at 5.2 ms;...")
• 00:57, 22 November 2025 PC talk contribs created page File:Java 23 vs. Rust.jpg
• 00:57, 22 November 2025 PC talk contribs uploaded File:Java 23 vs. Rust.jpg
• 00:56, 22 November 2025 PC talk contribs created page Inside Rust’s Codegen Units: How Parallel Compilation Actually Happens (Created page with "file:Inside_Rust’s_Codegen_Units.jpg If you’ve ever stared at your terminal wondering why your Rust build takes forever, you’re not alone. At some point, every Rust dev goes through the same five stages of grief: * cargo build * Wait. * Wait more. * Question life choices. * Google “why is Rust compilation so slow”. But under all that waiting, something pretty fascinating is happening. The Rust compiler isn’t just compiling your crate — it...")
• 00:54, 22 November 2025 PC talk contribs created page File:Inside Rust’s Codegen Units.jpg
• 00:54, 22 November 2025 PC talk contribs uploaded File:Inside Rust’s Codegen Units.jpg
• 00:53, 22 November 2025 PC talk contribs created page How the Rust Compiler Avoids Rebuilding the Universe (Most of the Time) (Created page with "500px If you’ve ever worked on a big Rust project, you’ve felt it:
that agonizing pause after you hit cargo build — watching your fans spin up as if you’ve just launched a space probe instead of a CLI tool. And then — a small change.
One line. 
A single println!. And Rust rebuilds everything. At least, it used to. Today, the Rust compiler (a.k.a. rustc) is far smarter — it avoids recompiling the universe ever...")
• 00:50, 22 November 2025 PC talk contribs created page File:How the Rust Compiler.jpg
• 00:50, 22 November 2025 PC talk contribs uploaded File:How the Rust Compiler.jpg
• 00:49, 22 November 2025 PC talk contribs created page Rust: Clap + Derive Makes our Command Line Life Easy (Created page with "In my previous article Rust: Take Our CLI to the Next Level with Clap (https://medium.com/@itsuki.enjoy/rust-take-your-cli-to-the-next-level-with-clap-a0f05875ef45), we have focused on using the Builder API of the Clap crate to process command line arguments. However, as the number of subcommands and arguments increases, try to define the clap::Command struct and retrieve all those clap::ArgMatches with Command::get_matches MANUALLY becomes a hell! And! That i...")
• 00:46, 22 November 2025 PC talk contribs created page Global Thinking: How Culture Shapes AI, Rust, and the Future of Problem Solving (Created page with "500px “If you want to build systems that work everywhere, you must first understand how people think everywhere.” Technology is the language of the world — but the grammar of thinking is written by culture.
Every algorithm, every system, every creative solution carries traces of human upbringing, emotion, and myth. In this global exploration, we’ll decode how AI, Rust, and problem solving are shaped by the world’s most cont...")