Moin Philip, I don't run such setups, but I hope this might be helpful nevertheless:
> We currently running our moinmoin wiki on an Amazon instance in North > Virginia. We have people in China who are trying to access it and are > reporting very poor access performance. Can have many reasons. Slow local internet connection at the user's site. Slow regional network there. High latency / slow international connection. Even different system loads due to different typical usage hours. > I'm thinking that one way of > solving the problem would be to set up a second server in a location > nearer to China, e.g. Tokyo or Singapore. Sounds reasonable. But maybe ask some people in china if that really helps / do comparative speed/latency tests. > Off the top of my head, it would seem to be relatively straightforward > to set up the Asia instance as read-only and then use rsync to > replicate changes from the US instance to Asia. Yes, that would work. Do a maint cleancache and a moin process restart after rsyncing. If you run exactly same python version, cpu architecture and maybe also otherwise same-setup, you can maybe get away without cleancache. > I could then use > Amazon's geo technology to redirect users to the "nearest" server. Maybe don't. Just have the servers at different URLs, so that people can decide which one to use (read-only one for fast reading / searching, the master for editing). > 2. Ideally, both servers would be writeable and I'd be syncing in both > directions but there is the risk of a collision then with two > different people editing the same page at the same time. It would be a > small risk, but the risk is there. Right. Maybe the r/w master and r/o replica is simpler. A third theoretical option is to set up a web proxy (squid, varnish, ...) near/inside china. But as wiki contents can change any time, effectively caching them is non-trivial / not possible without risking strange effects. Cheers, Thomas ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Moin-user mailing list Moin-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/moin-user
