James Clark

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[How Python's type hints deal with covariance/contravariance ](https://www.python.org/dev/peps/pep-0484/#covariance-and-contravariance)

Do we have an issue about variance for varargs (since array types are covariant)?

> Another idea to prevent the issue: comparing the clocks directly after receiving a timestamp event I implemented this approach in my project and I can confirm that it works...

An argument in favour of this is that with included record parameters (which is sort of the named equivalent of rest parameters), we allow the parameter for the record to...

Please also add any good references on workflow that will help me understand the space better.

From @sanjiva: https://www.academia.edu/4269223/ADoc-Oriented_Programming

Look at Amazon Simple Workflow Service: https://aws.amazon.com/swf/

@sameerajayasoma I am wondering what is feasible in terms of suspend/resume on top of jBallerina.

Other things to look at from Frank: 1. https://netflix.github.io/conductor/ 2. https://cloudacademy.com/blog/aws-step-functions-a-serverless-orchestrator/ 3. https://github.com/ibm-functions/composer/tree/master/docs 4. https://github.com/ing-bank/baker

@vinok88 Do you think the checkpointing can be made to work on top of jBallerina?