http://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660I should send you a patch for that? ;) http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment7http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment7Fri, 28 Aug 2009 22:17:19 GMTStephen, I think that you drastically underestimate the effort required. By seven orders of magnitude, at least http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment6http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment6Fri, 28 Aug 2009 21:25:37 GMTI understand, but lets say you could express the delete in memory surely the cache could be made to be quite sophisticated and handle deletes more sql for example. http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment5http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment5Fri, 28 Aug 2009 21:04:58 GMTStephen, That would require me to do an O(N) operation against the cache for each delete. And that even assumes that I can express the delete in memory http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment4http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment4Fri, 28 Aug 2009 20:57:28 GMTCouldn't you run the same criteria / linq against the cache when deleting entities? http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment3http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment3Fri, 28 Aug 2009 20:47:17 GMTJamie, This is fixed now http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment2http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment2Thu, 27 Aug 2009 05:31:04 GMTHi Ayende, Firstly, I am enjoying your commentary on this series of posts. It is informative to read about the design process that has gone into NHibernate by contrasting it with a completely new ORM. However, for this post do you think you could fix up the indentation or somehow indicate which parts are your thoughts, and which are from Davy's article? I found it a little confusing which was which. Cheers, Jamie http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment1http://ayende.com/4148/a-guide-into-or-m-implementation-challenges-the-session-level-cache#comment1Thu, 27 Aug 2009 03:40:21 GMT