High Availability

[Niels Dettenbach]

Am Montag, 20. April 2015, 08:32:52 schrieb Lalot Dominique:
> I would like to know the status of cyrus and HA:
> This documentation seems to consider that replication is edge..
> http://cyrusimap.org/docs/cyrus-imapd/2.4.9/install-replication.php
> and it has been written in 2007
Cyrus is a product mainly developed for large scale / ISP / enterprise level 
applications and in "good old internet terms" anything is "edge" which is not 
deployed over many years in such high requesting environments with a lot of 
experince around. But very few commercial / proprietary solutions did really 
have more experience and productive "field" testing behind when called 
"stable" by their marketing...


> *Note that Cyrus replication is still relatively young in the grand scheme
> of things, and if you choose to deploy you are doing so at your own risk. *
> Is there somewhere a documentation, an howto for HA (proxies, murder and
> replication)
Only for HA you are not required to use the "new" cyrus internal technologies 
- there still are many large scale cyrus installations which realized their 
own HA infrastructure / logic by standard or less standard tools / techniques.

But yes, some of the docs are a bit "edgy", but in the last years the 
situation was changing step by step into a better situation. I.e. see for 
murder:

https://cyrusimap.org/docs/cyrus-imapd/2.4.6/install-murder.php
https://cyrusimap.org/mediawiki/index.php/Cyrus_Murder_Design

and even well know computer magazines wrote about setup details (sorry for the 
egrman versiuon, but it may exist in the english version of LM too):
http://www.linux-magazin.de/Ausgaben/2007/11/Mailvertreter

hth a bit
cheerioh,


Niels.

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 Niels Dettenbach
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