On 25.09.2015 13:51, Andreas Stieger wrote:
> Hi,
>
> Nico Kadel-Garcia wrote:
>> On Fri, Sep 25, 2015 at 4:37 AM, Andreas Stieger <Andreas.Stieger_at_gmx.de> wrote:
>>> Nico Kadel-Garcia wrote:
>>>> On Thu, Sep 24, 2015 at 3:34 PM, Aaron Friesen <AFriesen_at_spirae.com> wrote:
>>>>> I have been tasked with setting up a mirror of several repositories with write-through back to the master.
>>>> What is your engineering time worth? Wandisco publishes a very nice
>>>> multi-master setup that does precisely this, at
>>> Not "precisely", it's synchronous replication with a variant of Paxos.
>> It's a more complete multi-master solution. The result is even better:
>> full high availability access with multiple Subversion servers,
>> synchronized write access to the core repository, and you don't have
>> to write the potentially fragile and split-brain prone hooks yourself.
> Yes. Synchronous replication. Paxos. Why repeat the definition?
Um. The Paxos algorithm is not the only way to do multi-master
synchronization.
Master-slave configurations do have their uses, although they're
theoretically less robust than a well-executed multi-master setup. On
the other hand, they're easier to implement correctly. However, when I
say "easier" I certainly do not mean "easy"; there are a *lot* of
opportunities for messing up.
That said, I'm rather bored by this plugging for WANdisco's solution by
someone who, by his own admission, has never used it.
-- Brane
Received on 2015-09-25 18:40:42 CEST