Elijah Hampton

🇺🇸🇨🇴 Engineer - de derecha | Ingeniero - Conservative

[Immanuel @immanuel_vibe]

most devs think eBPF is "that networking thing cloudflare uses"

it's this:
you can run your own code inside the linux kernel, safely, with no module, no patch, no reboot, on a box that's serving traffic right now

a verifier proves your program can't crash the kernel or loop forever. then it's JIT'd to native speed. that's the whole trick

what eBPF actually buys you:

- see every exec, every file open, every TCP connect on the host. no agent inside the app, no code change, no restart

- read TLS traffic before it's encrypted. uprobe on SSL_write. plaintext requests out of a binary you don't own and can't rebuild

- drop millions of packets/sec at the driver, before the kernel allocates an sk_buff. that's XDP. that's how DDoS mitigation works now

- delete iptables. cilium does k8s service routing in BPF hash maps instead of walking a linear rule chain that grows with your cluster

- continuous profiling of every process on the box, every language, zero instrumentation, single-digit percent overhead. parca, pyroscope

- block the syscall, not the alert. tetragon and falco don't just detect, they can kill the process at the hook

- swap the CPU scheduler at runtime. sched_ext landed in 6.12. valve wrote one for the steam deck

the mental model: your kernel now has event listeners. syscalls, kernel functions, packets, cgroups. attach, filter, aggregate into a map, read from userspace

the part nobody puts on the landing page: the verifier will reject perfectly correct code and hand you a 400-line register state dump as the explanation. it's like arguing with a compiler that has decided it hates you personally

worth it anyway. observability stops being a thing you build into your app and becomes a thing you point at it

what's the most cursed thing you've done with it?

[trish @TrisH0x2A]

SHA-256, the algorithm behind Bitcoin and countless TLS certificates, fits into roughly 100 lines of standard C

the implementation is just bitwise rotations, Ch, Maj, round constants, and 32-bit arithmetic

it pads the message, expands 16 words into a 64-word schedule, runs 64 rounds, and produces the NIST-verified digest

[Elijah Hampton @elijahampton]

@thepileate @Polymarket Happy this is the top comment

[Elijah Hampton @elijahampton]

Si señor

[Elías @EliasZamoranoCL]

Dime la verdad ¿Alcanzaste a usar uno de estos?

[Elijah Hampton @elijahampton]

It’s more explicit.

[Elijah Hampton @elijahampton]

I truly believe Rust’s biggest advantage over Go is the ownership model.

Rust makes memory ownership and concurrency part of the language’s structure and makes stronger guarantees.

[Elijah Hampton @elijahampton]

@liss2229 Esto si es verdad

[Liseth Rojas @liss2229]

No tener ingresos es lo más duro que un ser humano puede experimentar

[Paula. @thetwoalways]

Bendecido lunes 🤍🙏🏼

[Germán Rodríguez @GermanRSenador]

Me dicen que la estructura de Iván Mordisco la está pasando mal, ojalá le den muchos regalos desde el aire.
El cáncer no se trata al cáncer se extirpa.
GLORIA A MIS FUERZAS MILITARES Y POLICÍA. 🇨🇴🇨🇴🇨🇴🇨🇴

[Elijah Hampton @elijahampton]

The Network School is the modern evolution of the YC model. Talent, capital, education, and community are in one place and inspired by a culture of innovation and experimentation.

[Balaji @balajis]

Network School is back.

We’re up and running in the beautiful country of Kazakhstan, which combines high tech, low cost, brilliant people, a competent state, and plenty of space to build.

So: if you want to build a techno-optimist society with us, apply to Network School.

[Vicky Dávila @VickyDavilaH]

Presidente De La Espriella endurece discurso de seguridad desde Barranquilla: “Nunca más serán arrodillados ante el crimen”

https://t.co/QZjPn8vU0p

[Elijah Hampton @elijahampton]

Thanks for sharing. This looks like an interesting paper.

[Vivek Galatage @vivekgalatage]

Adding this to my reading list: "Understanding the Limitations of Pubsub Systems" by Atul Adya, Phil Bogle, and Colin Meek (Databricks) - Adya's a prominent name in distributed systems, so curious to dig into this one.

https://t.co/U8K14lHJPY

If you've already read this, what are your thoughts?

[Elijah Hampton @elijahampton]

Ending the night with Rust

[LA TORRES. 🇨🇴 @karenTorrezX]

pueden berriar, patalear y echar espuma por la jeta, pero Abelardo ha demostrado en tiempo récord que es un presidente de verdad: firme, sin miedo que está trabajando duro por Colombia. 🇨🇴

[Bryan Villafranca @bryanescritos]

Tener la madre viva es un privilegio 🙌🏾

[Elijah Hampton @elijahampton]

@primoecosta Que respuesta

[María Elvira Salazar 🇺🇸 @MaElviraSalazar]

¡Es un honor ser una vez más su candidata republicana al Congreso por el Distrito 27 de Florida! 🇺🇸🗳️

Gracias a los republicanos de nuestro distrito por elegir resultados por encima de la retórica, una voz independiente por encima de los jefes de partido y la libertad por encima del socialismo.

En el Congreso, seguiré votando por lo que sea mejor para ustedes, mis constituyentes, y no por lo que exijan los de siempre en Washington.

Seguiré luchando para bajar los impuestos, encontrar soluciones a nuestra crisis de vivienda, construir apoyo bipartidista para arreglar nuestro quebrado sistema de inmigración y enfrentar con firmeza a los socialistas demócratas que han tomado el control del Partido Demócrata.

La lucha para mantener al Distrito 27 ROJO y a Florida LIBRE continúa. Y, si Dios quiere, ¡en noviembre derrotaremos a la izquierda radical! 🇺🇸

[Kathy Lambis @KathyLambis]

Mood: no tengo tiempo para gente sin pensamiento crítico.