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Newsgroups: comp.lang.ada
Date: Thu, 28 Feb 2019 12:18:37 -0800 (PST)
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Subject: Re: ? Are there LDPC error code lib in Ada ? thanks.
From: Daniel Norte Moraes <danielcheagle@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:55721
Date: 2019-02-28T12:18:37-08:00
List-Id: <comp.lang.ada>

Em s=C3=A1bado, 23 de fevereiro de 2019 04:49:41 UTC-3, Dmitry A. Kazakov  =
escreveu:
> On 2019-02-22 23:22, Daniel Norte Moraes wrote:
>=20
> >    Main objective is "forward error recover" e.g:
> >    1) try automatic recover data in engine of distributed database befo=
re
> > need to ask for retransmission data from nodes
>=20
> If transmission errors occur they do not manifest themselves as=20
> corrupted data, because the transports already correct these. They do as=
=20
> undelivered data, dropped connections, missed deadlines, lost integrity e=
tc.
>=20
> >    2) and auto-recover for data received.
>=20
> There is no recovery from non-delivery. You can improve situation using=
=20
> redundant nodes and some sort of consensus in the scenario when some=20
> nodes might go offline. Error correcting codes is no help at this level=
=20
> of abstraction (application's OSI).
>=20
> --=20
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de

  Hi! :-)

  Just to heal my doubt: =20
  Is Better double the data and verify crc and if one is corrupted (and the=
 other is ok) substitute the corrupted with the good one ?
  It is ok for me, too. I remmenber CouchDb use this aproach. this will sim=
plifly my code, too. :-)

 []'s Grateful, Dani. :-)=20