[Links of the Day] 10/04/2017 : Loopy , Distributed execution engine and Yet another distributed ledger algo

• Loopy : Fantastic tools for explaining and describing complex system interaction. It's easy to use and even easier to get the message across [github]
• Ray : experimental distributed execution engine replicating code across multiple workers. Written in python it leverages object store and distributed task execution to achieve parallelism. I really wonder if it wouldn't have been better to code Ray using AWS lambda and S3. 
• Algorand : yet another distributed ledger. The approach proposes to eliminate the segregation of actors in the ledger system. No more miners and users, everybody is an equal participant. Moreover, it relies on a new for of Byzantine agreement ( need a TLA+ proof to really feel comfortable with that) and cryptographic selection algorithm for selecting leader (verifier) of the ledger process execution. This is a rather interesting paper and I will try to produce a short summary of it if I find the time.