Re: [Blockchain-interop] Gatweay Crash Recovery Discussion #1

[Thomas Hardjono <[e-mail]>]

Thanks Rafael.

Inline:

>>> > -- Which mode (self-healing mode, or primary-backup mode) do you
>>> >>> > recommend?  (Which one would be the simplest approach for now, and
>>> > what assumptions would we need to make).
>>> 
>>> The self-healing mode is simpler, as the same machine eventually
>>> recovers, continuing its operations since the latest log entry. It does
>>> not require, in principle, to read from the log storage API. However, we
>>> are assuming it eventually recovers, and while this happens the system
>>> is down, prejudicing availability.

For this scenario, there may need to be some assumptions about the gateway node.  

For example, (i) the gateway recovers to 100% without any internal losses (e.g. loss of private-keys); (ii) that the SSL connection has a longer life-time than the duration of crash (unavailability); etc.

For short-duration unavailabilities, would the gateway pick-up (restart) from the last message before crash, or does it start from the beginning of the Phase?

Best


-- thomas --




> ________________________________________
> From: Blockchain-interop [[e-mail]] on
> behalf of Rafael Belchior
> [rafael.belchior=[e-mail]]
> Sent: Monday, November 30, 2020 11:49 AM
> To: [e-mail]
> Subject: [Blockchain-interop] Gatweay Crash Recovery Discussion #1
>
> Dear All,
> Attached, the slides of the first discussion on the crash recovery
> mechanism for gateways, that took place during the last meeting.
>
>
> Cheers,
>
> --
> Rafael Belchior
> Ph.D. student in Computer Science and Engineering, Blockchain - Técnico
> Lisboa
> https://rafaelapb.github.io/
> https://www.linkedin.com/in/rafaelpbelchior/

--
Rafael Belchior
Ph.D. student in Computer Science and Engineering, Blockchain - Técnico
Lisboa
https://rafaelapb.github.io/
https://www.linkedin.com/in/rafaelpbelchior/