Software resources not to forget about

This isn't meant to be a big list. The smaller the list, the more meaningful it is. That said, I'd love to hear from you about what is or would be on your list.

Architecture

• Simon Eskildsen's Napkin math numbers
• Designing Data Intensive Applications
• High Performance Browser Networking
• Jepsen consistency models
• Martin Kleppmann's Transaction isolation level tests across major databases

Testing

• Andrey Satarin's collection on testing distributed systems

Benchmarking

• Fair Benchmarking Considered Difficult: Common Pitfalls In Database Performance Testing