TLA+ is a language for formally modeling and verifying the correctness of programs, especially concurrent and distributed ones. We discuss how it could be used to improve the practice of software engineering and what it would take for formal methods to gain more popularity.

Links/Resources:

• TLA+ Homepage https://lamport.azurewebsites.net/tla/tla.html
• https://learntla.com/introduction/
• https://lamport.azurewebsites.net/video/videos.html
• https://lamport.azurewebsites.net/tla/tutorial/contents.html
• https://lamport.azurewebsites.net/tla/industrial-use.html
• https://cacm.acm.org/magazines/2015/4/184701-how-amazon-web-services-uses-formal-methods/fulltext

Chapters:

0:00 Intros

2:14 What is TLA+?

5:10 Bugs in Concurrent and Distributed Programming

12:58 What's it like to use?

19:09 Global State Machine

20:34 Testimonials of Industrial Use Cases

24:56 Why is it not more popular?

27:32 How do we currently design our programs?

37:16 Everyone is a distributed systems programmer now

41:29 Thick client app management

49:47 Can haz use for Security?

53:08 TLA+ is for the design, not implementation

59:35 TLA+ all the things

1:02:55 Formal methods in Crypto?

1:08:19 Intrigued with Formal Methods

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