Upgrading from squid v1.1.* to squid v1.2-beta18 ...

dear all,

I've been asked to talk to some people on the differences of squid v1.1.* and
squid v1.2.*.. I also would like to tell them how to perform the upgrade from
squid v1.1.* to squid v1.2 if the would like to try the beta version of Squid.
The questions I have:
- Is it necessary to clear the cache, or is it possible to reuse the objects
  in the cache by removing the squid log (index) file??
  [I've read something on removing all 'swap.state*' but these are not known
   yet on squid v1.1.*....]
- In squid v1.1.* the size of the cache was directly related to the size of
  the available RAM.. Squid v1.1.* uses approximately 64-Bytes of RAM for
  every object it holds in cache.. In squid v1.2 this seems to be less..
  Also the HOT cache seems to be gone..
  What ican be the size of the new cache with squid v1.2 with the same amount
  of RAM ??
- Does someone know of a fast way to pre-load the cache with a number of
  most wanted/used objects??

Cheers, Henny

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