?p?s??p?s?

1
?p?s??p?s?

• ?????
• ?app?? ?????
• ??eµµ?d?? ?????
• S??ßa??da? ?????
• Staµ??p????? ??sta?

2
Tet??? t?? ?2?

• ????? se sf??µata
• ???aµ??? s?µµet??? t?? ??µß??
• ??aµ???asµ?? p????
• ?e????? ????? d?a????s?? p????f???a?
• ??????a ???p???s?? ?a? ???s??
• ?????µ?a

3
????t??? t?? ?2?

• ?a d?µ?f??? ?2? de? e??a? scalable (Kazaa,
  Gnutella)
• ???a?? ap?t???a a?a??t?s?? (ad?µ?ta)
• ?ata????s? bandwidth ap? µ???µata a?a??t?s??
  (ad?µ?ta)
• ????p?st?a
• ???p? p?e?µat???? ?d???t?s?a?

4
S?µa?t???? efa?µ????

• ??aµ???asµ?? a??e??? (Kazaa)
• ?ata?eµ?µ???? ?p?????sµ?? (SETI_at_home)
• Instant messaging (Yahoo)
• ??atf??µe? (.???, JXTA)
• ?a????d?a

5
??d?af????se? ?d?e?

• SONs (?e?a???e? ?at??????? ded?µ???? ß?se?
  ?eµat???? pe??????)
• ???et???a d??µ?????s?? (RIs). ??a??t?s?
  p????f???a? µe e???st??? t??p?
• ???s?µ?p???s? t?? CAN ??a ???p???s? e??t?se??
  e?????
• ?ata?eµ?µ??? epe?e??as?a e??t?se?? ß?se? XML
  p?????

6
The number one...is CAN

• ?p??t?ta
• ? ?d?a t?? CAN ???s?µ?p??e?ta? se e??t?se??
  e????? ?a? se s?µas???????? d??t?a (pSearch)
• ?????? ep?????? ??a replication (p???ap???
  p?a?µat???t?te?, p???ap??? s??a?t?se??
  ?ata?e?µat?sµ??, ?pe?f??t?s? ?????)
• ????p????t?ta
• ??a??t?s? dN1/d
• e?sa????/ap?????s? 2d
• ?atast?se?? 2d

7
?????t? p??ß??µata

• ?at??????p???s? t?? ded?µ????
• S?s??t?s? t?? f?s???? d??t??? µe t? ?deat? d??t??
• ??at???s? µ?a? ?a??? t?p?????a? p.?. ?pe???ß??
  ??a e??s????p?s? t?? f??t???

8
???t?se??

• ?