Small. Fast. Reliable.
Choose any three.
*** 23,28 ****
--- 23,29 ----
  Turck MMcache to share data among PHP scripts; if I could use SQLite instead with similar performance 
  it would be really good.
  
+ 2005-11-02: If you are on Linux, perhaps you could use the shared memory filesystm (tmpfs).  It looks just like a normal filesystem, except the Linux kernel stores it all in memory.  Some distributions come out of the box with /dev/shm mounted in this way, so you can share memory just by sharing files in this directory.
  
  ----
  2003-04-15:  The in-memory database is now in the CVS tree, though it is still