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revision 1.105 by antont, Thu Feb 6 12:18:07 2003 UTC revision 1.106 by antont, Thu Feb 6 13:27:21 2003 UTC
# Line 119  usable yet. Line 119  usable yet.
119  .. [General figure of Storm, i.e. application layer, storm layer,  .. [General figure of Storm, i.e. application layer, storm layer,
120     netowork layer ? -Hermanni]     netowork layer ? -Hermanni]
121    
122  .. [Move somewhere else -b]:  .. [Move somewhere else -b]::
123     [Section 8 ?-) -Hermanni]     [Section 8 ?-) -Hermanni]
124     No work on integrating Storm with current programs (in the spirit of Open Hypermedia)     No work on integrating Storm with current programs (in the spirit of Open Hypermedia)
125     has been done so far. It is not clear how far this is possible     has been done so far. It is not clear how far this is possible
# Line 131  usable yet. Line 131  usable yet.
131  .. Investigating the degrees of interoperability with Open Hypermedia  .. Investigating the degrees of interoperability with Open Hypermedia
132     (/Structural Computing?) and (more primitive?) other (Web) XXX is a possible     (/Structural Computing?) and (more primitive?) other (Web) XXX is a possible
133     direction for future work, and will be preliminarly discussed here too.     direction for future work, and will be preliminarly discussed here too.
134     [benja says: Really? Do we/can we discuss that really?]     [benja says: Really? Do we/can we discuss that really? antont: 'll try.]
135    
136  This paper is structured as follows. In the next section, we describe  This paper is structured as follows. In the next section, we describe
137  related work. In section 3, we introduce the basic storage unit of our  related work. In section 3, we introduce the basic storage unit of our
# Line 145  potential peer-to-peer implementations o Line 145  potential peer-to-peer implementations o
145  we report on implementation experience and future directions.  we report on implementation experience and future directions.
146  Section 9 concludes the paper.  Section 9 concludes the paper.
147    
148  .. (where and how use cases? are not mentioned in either of the above, but are  .. [Use cases in intro, discussion on how Storm applies to them
149     currently split in two - hinting somewhere in the beginning and reviewing at     to the end/in Conclusions.]
    the and).  
    [In appendix A ? -Hermanni]  
    [IMHO: Use cases in intro, discussion on how Storm applies to them  
    to the end/in Conclusions. -b]  
150    
151    
152  2. Related Work  2. Related Work
# Line 218  is limited to client-server architecture Line 214  is limited to client-server architecture
214  architecture. Groove [ref] is a improved design of Lotus Notes, which employs  architecture. Groove [ref] is a improved design of Lotus Notes, which employs
215  strong security mechanisms and uses peer-to-peer functionality  strong security mechanisms and uses peer-to-peer functionality
216  as basis of communication channel among limited amount of participants.  as basis of communication channel among limited amount of participants.
217  Neither of these systems don't support the immutable of data.  Neither of these systems supports the immutability of data.
218    
219  CFS [ref], which is built upon Chord DHT peer-to-peer routing layer[ref], stores  CFS [ref], which is built upon Chord DHT peer-to-peer routing layer[ref], stores
220  data as blocks. However, CFS *splits* data (files) into several miniblocks and  data as blocks. However, CFS *splits* data (files) into several miniblocks and
# Line 463  and the characters retrieved from there Line 459  and the characters retrieved from there
459    
460  Our current implementation shows only links between documents  Our current implementation shows only links between documents
461  that are in memory at the same time [screenshot of xupdf, perhaps ref too  that are in memory at the same time [screenshot of xupdf, perhaps ref too
462  (submitted) ?].  (submitted) antont: was thinking the same, it would illustrate this well].
463  In the future, we will implement a global distributed index at top of  In the future, we will implement a global distributed index at top of
464  a distributed hashtable, with the scroll blocks' ids as the keys.  a distributed hashtable, with the scroll blocks' ids as the keys.
465  To find the transclusions of a span, the system will retrieve  To find the transclusions of a span, the system will retrieve
# Line 477  the user enters between two saves of a d Line 473  the user enters between two saves of a d
473  that this will not be a major scalability problem. Otherwise,  that this will not be a major scalability problem. Otherwise,
474  systems that allow range queries, such as skip graphs [ref]  systems that allow range queries, such as skip graphs [ref]
475  and skipnet [ref], may prove useful.  and skipnet [ref], may prove useful.
476    [how does video work here, i.e. are they huge blocks or collections of many
477    small, frames? or a sequence between two keyframes?]
478    
479  [This might be relevant also:  [This might be relevant also:
480  http://www.hpl.hp.com/techreports/2002/HPL-2002-209.pdf  http://www.hpl.hp.com/techreports/2002/HPL-2002-209.pdf
# Line 485  http://www.hpl.hp.com/techreports/2002/H Line 483  http://www.hpl.hp.com/techreports/2002/H
483  One question raised by xanalogical storage is which links to show  One question raised by xanalogical storage is which links to show
484  for a popular document that has been linked to by many users.  for a popular document that has been linked to by many users.
485  We hope to address this problem by collaborative filtering  We hope to address this problem by collaborative filtering
486  of links [explain, ref]. There has been research on  of links [explain, ref (grouplens.org pubs?)]. There has been research on
487  collaborative filtering in peer-to-peer systems  collaborative filtering in peer-to-peer systems
488  without compromising participants' privacy [ref John Canny].  without compromising participants' privacy [ref John Canny].
489    
# Line 514  to a Storm pool:: Line 512  to a Storm pool::
512    
513      getMappings(block) -> set of (key, value) pairs      getMappings(block) -> set of (key, value) pairs
514    
515  .. [What is mapping ? We should explain this :) -Hermanni]  .. [What is mapping ? We should explain this :) -Hermanni
516            isn't it explained above? it's a set of key-value pairs]
517    
518  This callback processes a block and returns a set of mappings  This callback processes a block and returns a set of mappings
519  to be placed into the index. The Storm pool, in turn, provides  to be placed into the index. The Storm pool, in turn, provides
520  the following interface to the application::  the following interface to the application:
521    
522      get(key) -> set of (block, value) pairs      get(key) -> set of (block, value) pairs
523    
# Line 890  to copy the blocks from the NYT publicat Line 889  to copy the blocks from the NYT publicat
889  and verify offline that it really comes from NYT. How to do this will go  and verify offline that it really comes from NYT. How to do this will go
890  into the article as an open research question ;-)  into the article as an open research question ;-)
891    
892  Future directions: of course, we shoul implement a prototype  Future directions: of course, we should implement a prototype
893    
894  Open issue/Future directions: implement multisource downloading  Open issue/Future directions: implement multisource downloading
895    
# Line 900  Open issue: Firewall Transparency/NATs ? Line 899  Open issue: Firewall Transparency/NATs ?
899    
900  Open issue: identification of online entities ?  Open issue: identification of online entities ?
901    
902    Open issue: how to address interoperability - what do we mean with it?
903    One thing might be to look at the OHS OHProtocol and such.
904    Another is to investigate Web publishing with using storm for zope?
905    interestingly zope by default stores diffs in the zodb (similarly:cvs&storm?)
906    Benja also noted about pointing to external data? (couldn't find the post
907    from the archives)
908    
909  9. Conclusions  9. Conclusions
910  ==============  ==============
911    

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