[OSM-talk] advertising, Money: for which purpose and how much?

Tom Hughes tom at compton.nu
Tue Jul 3 18:13:40 BST 2007

In message <468A82AC.6050803 at remote.org>
          Frederik Ramm <frederik at remote.org> wrote:

> Oh yes, definitely, I'd expect delays in the sub-second range. (Google
> has even put out a patch against MySQL 4 whereby you get "live"
> replication as opposed to the default "lazy" replication, i.e. a
> transaction will only be confirmed by the server if it has been
> replicated to at least one slave. But that would be defying our purpose
> I believe.)

Well we'd have to have an environment with functioning transactions
anyway, which we don't as some tables are MyISAM.

> But even if we'd opt for a replication technology that would create
> longer delays, say a few minutes, I'd still say that's enough for us.
> About 80% of write requests that reach the central server are done with
> JOSM, and this means that they will usually be based on data that was
> read half an hour ago, or even older data. Five minutes more or less
> don't hurt there I'd say.

Well if people were doing updates and resolving conflicts before
uploading then that wouldn't be true ;-)


Tom Hughes (tom at compton.nu)

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