|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
n |
Caching
|
|
|
|
– |
quite
often disabled by information providers to be able to create
|
|
user
profiles, usage statistics etc.
|
|
|
|
– |
dynamic
objects cannot be cached
|
|
|
|
n |
numerous
counters, time, date, personalization, ...
|
|
|
|
– |
mobility
quite often inhibits caches
|
|
|
|
– |
security
problems
|
|
|
|
n |
how
to use SSL/TLS together with proxies?
|
|
|
|
– |
today:
many user customized pages, dynamically generated on
|
|
|
request
via CGI, ASP, ...
|
|
|
n |
POSTing
(i.e., sending to a server)
|
|
|
|
– |
can
typically not be buffered, very problematic if currently
|
|
|
disconnected
|
|
|
n |
Many
unsolved problems!
|
|