verylegit.link - A URL shortener, but it makes the URLs look extremely dodgy instead

Interesting, sharding a DB down to the CPU level, such that inter-CPU comms is functionally the same as inter-server, and is thus massively parallelizable, at the expense of per thread scheduling complexity.

Was an inline web security proxy/load balancer startup that accidentally turned into CDN (due to tremendous optimization and and anycast edge caching techniques) and discovered some tricks to fiddle with client content to hide it from spambot trawling (like inline replacement of email addresses with a short javascript string, or adding third party services such as Google Analytics to content without modifying the origin content, or even inline feeding of third party widgets via keepalive session extension). They handle double digit amounts of world web traffic apparently.