VI · Distributed-systems pioneers
Pat Helland
1955–
Tandem · Microsoft · Amazon · Salesforce
Gave us
"Life Beyond Distributed Transactions" (2007), "Idempotence Is Not a Medical Condition" (2012), "Building on Quicksand" (2009). The most quotable systems essayist of his generation.
The story
Worked on every major distributed database of the last 40 years. His essays about why exactly-once delivery doesn't exist, why conflict resolution must be application-specific, and why "eventual consistency" needs better marketing are still cited in design docs at every company you've heard of.