Examples

Simulating Elevators in TLA+ is a fun exercise. https://github.com/tlaplus/Examples/blob/master/specificatio... Another interesting, and underrated one: hotel keys.

From the link above, I also found Leslie Lamport's Home page[1], The original developer of TLA+. Leslie's home page contains an incredible amount of info about TLA. There's a published Book with pdf available. There are video courses and talks. There are also git repos of examples[2] and tools[3] Thanks for the link, _doctor_love [1] https://lamport.azurewebsites.net/ [2] https://github.com/tlaplus/Examples [3] https://github.com/tlaplus/tlaplus/

Hillel Wayne's "Practical TLA+" book and the TLA+ examples repository (https://github.com/tlaplus/Examples) both contain excellent worked examples ranging from simple algorithms to complex distributed systems.

The TLA Plus examples repository is very good: https://github.com/tlaplus/Examples . I would recommend starting with something simple like the DieHard problem.

I've been learning TLA+ for the past two months, hoping I could use it as a formal language for software design generally and not just for concurrent systems. I'm enamored with the idea of using math formalisms to describe a state machine. But now that I've gone through Lamport's (very charming) video tutorials at OP's link and studied some of the specifications at https://github.com/tlaplus/Examples/tree/master/specificatio... I'm less sure now that I can. I'll keep plugging away, but if anyone here has any suggestions or offers any alternatives, I'm all ears.

Part 3 has examples of two sorting algorithms. There are also examples in these links: https://learntla.com/models/example/ https://www.hillelwayne.com/post/modeling-deployments/ https://www.linkedin.com/pulse/lamports-tla-spec-testing-why... https://github.com/tlaplus/Examples/tree/master/specificatio... https://github.com/tlaplus/Examples/tree/master/specificatio...

There's a few I can think of! First, the TLA+ GitHub repo has a bunch of examples[0]. The best one to start with is the Die Hard puzzle[1], where the heroes must obtain four gallons of water given only three and five gallon jugs. In the spec[2] we set up the system and specify all possible actions; then we model-check the system to see whether it can spit out an execution trace of actions to reach a state where we have four gallons of water in a jug. The Wikipedia article also has some good example specs[3]. For your own first specification, I personally cut my teeth on a river-crossing puzzle with a farmer, wolf, and sheep. [0] https://github.com/tlaplus/Examples/tree/master/specificatio... [1] https://www.youtube.com/watch?v=6cAbgAaEOVE [2] https://github.com/tlaplus/Examples/blob/master/specificatio... [3]https://en.wikipedia.org/wiki/

Paxos-based means what exactly? How much of the specification does it implement? [0] [0] https://github.com/tlaplus/Examples/tree/master/specificatio...