Re: Session and Multi Server Architecture

Stut wrote: >> There's no question of locking users to particular machines, nor of >> uneven distribution. LVS will distribute evenly or according to >> weights. > > Indeed, but you must see that making the decision of which server to > use per request will result in a more even distribution than deciding > once per session. You might see a somewhat uneven distribution if you only have a small number of machines, but the resources you're saving by not having memcached replicate objects will now be available for that slightly less even distribution. > Having said that I don't see a problem with depending on a particular > piece of software as a dependency of the application. Your app already > requires PHP, and most likely requires a bunch of extensions to be > present so I don't see a major problem in adding memcache to that > list, especially if it means you can use it much more efficiently by > assuming it's available. My personal choice would be not to have my application deal directly with caching, but that's mostly a matter of choice. /Per Jessen, Zürich