We’re launching Lyria 3.5 in Google Flow Music, with advances across musicality, lyrics, vocals, and creative control
deepmind.google·6d ago
AI Engineering
Hacker News·16d ago·5 min read
Clever hacker fits 537,000 domains in a $5 ESP32 ad-blocking dongle
TL;DR
A hacker has successfully integrated 537,000 domains into a compact $5 ESP32 ad-blocking dongle. Utilizing only about 50KB of RAM, the firmware can process blocked lookups in just 10 milliseconds.
✦ Why It Matters
Engineers can explore using ESP32 for cost-effective ad-blocking solutions in their projects today.
Key Takeaways
- Explore using ESP32-C3 for low-cost network solutions.
- Implement hashing techniques to optimize data storage.
- Consider backup systems for existing ad-blockers.
- Evaluate trade-offs between storage and functionality in microcontroller projects.
How It Works
ZedAxis's ad-blocking filter uses a hashing method to compress domain names into 40-bit values, allowing the storage of a large number of domains in limited flash memory. When a DNS query is received, the device hashes the requested domain and performs a binary search against the sorted hash table to determine if it should block the request.