Re: [ZODB-Dev] Re: two level cache

2007-03-30 Thread Dieter Maurer
Atmasamarpan Novy wrote at 2007-3-30 01:06 +0200: > ... >I was looking at code in the meanwhile and I was thinking more in the >direction of caching of pickles instead of sharing objects among >connections. It means that moving from L2 into L1 would require to >unpickle the object and it is cert

[ZODB-Dev] Re: two level cache

2007-03-29 Thread Atmasamarpan Novy
Dieter Maurer wrote: Jim and Tim convinced me that it would not work (at least not without lots of code insprection for C extensions handling persistent objects (such as BTrees): The problem: while an object may be read only on the application level, it is not read only below this level:

[ZODB-Dev] Re: two level cache

2007-03-28 Thread Atmasamarpan Novy
Jens Vagelpohl wrote: Use ZEO and you get your single L2 cache, file-based, for free... jens I was referring to a memory cache. Secondly, there is no possible performance gain (only loss) one can get by using zeo with its file cache comparing to a direct file storage. ZEO is a great tool, bu