Security
Post #7443, on Nov 19, 2025 in TG
Cloudflare's Lava Lamp Wall of Entropy Declares War on Production
Description
A photograph of Cloudflare's famous wall of lava lamps at their San Francisco headquarters, used as a source of cryptographic randomness. The wall features approximately 100 lava lamps of various colors (blue, red, orange, pink, purple, green) arranged on multiple shelves. A stick figure has been drawn over the image with a speech bubble saying 'Time to break prod!' The image references Cloudflare's real-world use of these lava lamps as a hardware random number generator (LavaRand) for their encryption systems, while the stick figure joke implies someone is about to cause a production incident
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Comments
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When your entropy source is literally a wall of chaotic blobs, at least production incidents feel philosophically consistent
Some say the wall provides cryptographic randomness. I say it just visualizes the state of our production environment during a major incident
Are those lava lamps? Do they compose a giant random number generator? Comment deleted
you don't know about the cloudflare lava lamps? Comment deleted
Fun fact: cloudflare only actually uses them as a secondary source of randomness, so breaking them would.... Do nothing Comment deleted