TCP proxy that also duplicates traffic to a secondary host
I built this because I needed a way to "tap" production traffic and shoot it at a new system to see how it handles load.

Some example accessing memcached from a shell using nc and echo

Tachyon is a fault tolerant distributed file system enabling reliable file sharing at memory-speed across cluster frameworks, such as Spark and MapReduce. It achieves its high performance by leveraging lineage information and using memory aggressively. Tachyon caches working set files in memory, and enables different jobs/queries and frameworks to access cached files at memory speed. Thus, Tachyon avoids going to disk to load datasets that are frequently read.