MIT distributed system course recommended: Paper to read

Spanner: Google’s Globally-Distributed Database
https://pdos.csail.mit.edu/6.824/papers/spanner.pdf  

No compromises: distributed transactions with consistency, availability, and performance

https://pdos.csail.mit.edu/6.824/papers/farm-2015.pdf   

Resilient Distributed Datasets: A Fault-Tolerant Abstraction for In-Memory Cluster Computing

https://pdos.csail.mit.edu/6.824/papers/zaharia-spark.pdf  

Scaling Memcache at Facebook

https://pdos.csail.mit.edu/6.824/papers/memcache-fb.pdf  

Secure untrusted data repository

https://pdos.csail.mit.edu/6.824/papers/li-sundr.pdf

BitCoin

https://pdos.csail.mit.edu/6.824/papers/bitcoin.pdf

blockChain

https://pdos.csail.mit.edu/6.824/papers/blockstack-atc16.pdf