At 250 billion DNS cache entries, one wasted byte costs 250 GB of RAM. Five Rust optimizations later: 100 TB freed, inserts 43% faster, lookups 19% faster. We didn't trade speed for space. https://cfl.re/4wOegyp

How we saved 100 terabytes of memory by optimizing 1.1.1.1’s DNS cache

Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.

blog.cloudflare.com

@larchuk.bsky.social did you reach out to me on twitter? dm?

ssh ssh.mahdiyusuf.com check it out.

ssh ssh.mahdiyusuf.com check it out.

@softwaredoug.bsky.social can I buy some of your old courses still or enroll in them and get the content now? It’s inconvenient to have to wait for course dates.

www.mahdiyusuf.com/looping-casi...

Looping Casino

Autonomous coding loops excel at search, not judgment. They can optimize toward a goal, but they can’t reliably tell when the goal is wrong. Engineering is still more than iteration speed.

mahdiyusuf.com

iddqd, or the hardest kind of unsafe Rust. My first post for the @oxide.computer blog! Goes deep into the pitfalls of unsafe Rust and how to reason about it. A lot of labor went into the post -- please have a read! oxide.computer/blog/iddqd-u...

iddqd, or the hardest kind of unsafe Rust | Oxide Computer Company

How our Rust collections library defends against adversarial trait implementations.

oxide.computer

Speed Tax www.mahdiyusuf.com/the-speed-tax/

The Speed Tax

Speed is seductive, but unchecked velocity creates hidden risk. When building gets cheaper, scrutiny disappears—leading to security gaps, product bloat, and cultures that reward shipping over thinking...

mahdiyusuf.com

So what do people think about sliced tomatoes on a pizza?

@rickypadil.la sup

America outsourced manufacturing, then the skills to design what gets manufactured. Software is next. mahdiyusuf.com/the-journey-...

The journey was the point

America outsourced manufacturing, then the skills to design what gets manufactured. Software is next.

mahdiyusuf.com

America outsourced manufacturing, then the skills to design what gets manufactured. Software is next. mahdiyusuf.com/the-journey-...

The journey was the point

America outsourced manufacturing, then the skills to design what gets manufactured. Software is next.

mahdiyusuf.com

I built more with AI agents in two months than the previous year. I used almost none of it. The real productivity gain isn't building—it's using. mahdiyusuf.com/your-agent-i...

Your agent is building things you'll never use

I built more with AI agents in two months than the previous year. I used almost none of it. The real productivity gain isn't building—it's using.

mahdiyusuf.com

Why your coding agent keeps undoing your architecture mahdiyusuf.com/why-your-cod...

Why your coding agent keeps undoing your architecture

Think of your codebase as a state machine. The code is the current state. The architectural decisions are the transitions.

mahdiyusuf.com

Why your coding agent keeps undoing your architecture mahdiyusuf.com/why-your-cod...

Why your coding agent keeps undoing your architecture

Think of your codebase as a state machine. The code is the current state. The architectural decisions are the transitions.

mahdiyusuf.com

Wrote something about the importance of the code generation and library use in the context of agents. mahdiyusuf.com/agents-didnt...

Agents didn't kill libraries—they just changed the math

I've been writing software long enough to remember when "don't reinvent the wheel" was gospel. Find a library. Import it. Move on. The assumption was clear: someone else's maintained code beats your o...

mahdiyusuf.com

Sparking up the blog again and decided to write some inference into the blog. There a few other spots where you can see it in action as well. Check it out.

Experimenting with a Touch ID wrist rest 👀 Early prototype, lots to refine—but the idea feels right.

MCPs give me the same energy as GraphQL: works just well enough that people adopt it, just poorly enough that you inherit a new class of problems. Both exist because building proper context and tooling takes effort. Most would rather reach for something "good enough."

MCPs give me the same energy as GraphQL: works just well enough that people adopt it, just poorly enough that you inherit a new class of problems. Both exist because building proper context and tooling takes effort. Most would rather reach for something "good enough."

Playwright MCP is too token heavy what else people using?

First custom keyboard build ✅ Split layout, fully custom case + PCB — designed from scratch and 3D-printed. Still a work in progress, but seeing it come together is fun. Firmware next.

Anyone have a cool set up for iPadOS for running terminals for using Claude code?

First custom keyboard build ✅ Split layout, fully custom case + PCB — designed from scratch and 3D-printed. Still a work in progress, but seeing it come together is fun. Firmware next.

Has anyone set up a self hosted ghost instance using 6.0 and manage to get up with new built in activity pub integration?

anyone know of any good image generation LLMs that are good with icons or generation extension logos. I am surprised this isn't an area of focus.

I was looking for ways to vibe with llms using voice to text in rooms with others. this product did not disappoint.

OH: Does CI really need to run on every merge? Can't it reasonably be once a day or something?

This industry gives me a headache sometimes.

I wonder which happens first, we start building tools for agents to use to get better context or agents can hook in. I am surprised the things they do everyday to get context they need.