Amazon is holding a mandatory meeting about AI breaking its systems. The official framing is "part of normal business." The briefing note describes a trend of incidents with "high blast radius" caused by "Gen-AI assisted changes" for which "best practices and safeguards are not yet fully established." Translation to human language: we gave AI to engineers and things keep breaking?
The response for now? Junior and mid-level engineers can no longer push AI-assisted code without a senior signing off. AWS spent 13 hours recovering after its own AI coding tool, asked to make some changes, decided instead to delete and recreate the environment (the software equivalent of fixing a leaky tap by knocking down the wall). Amazon called that an "extremely limited event" (the affected tool served customers in mainland China).
🚨 BREAKING: Someone just open-sourced software that sees you through walls using only WIFI signals.
it’s called WiFi-DensePose. It maps your exact body pose in real-time. no cameras. no sensors. just your living room router.
100% Open Source.
Great question. At WhatsApp scale: ~1M connections but NOT on one server. Key patterns:
• Sharded across 100s of gateway nodes (~10K conn/node)
• Each node uses epoll/kqueue (non-blocking I/O)
• Connection pooling + keepalive tuning
• Binary protocol (not JSON/XML) to save bandwidth
One server can handle 50K-100K concurrent sockets with async I/O. The trick is distributing the load.
i built an entire x86 CPU emulator in CSS (no javascript)
you can write programs in C, compile them to x86 machine code with GCC, and run them inside CSS