Changes between Version 10 and Version 11 of ServerSelection

Timestamp:

2010-07-21T15:43:23Z (14 years ago)

Author:

zooko

Comment:

comment

ServerSelection

@@ -8 +8 @@
  * Shawn Willden wants, likewise, to specify a server (e.g. his mom's PC) which is guaranteed to get at least K shares of certain files (the family pictures and movies files).
  * Some people -- I'm sorry I forget who -- have said they want to upload at least K shares to the K fastest servers.
- * Jake Appelbaum and Harold Gonzales want to specify a set of servers which collectively are guaranteed to have at least K shares -- they intend to use this to specify the ones that are running as Tor hidden services and thus are attack-resistant (but also extra slow-and-expensive to reach).  Interestingly the server selection policy on ''download'' should be that the K servers which are Tor hidden services should be downloaded from as a last resort. 
+ * Jacob Appelbaum and Harold Gonzales want to specify a set of servers which collectively are guaranteed to have at least K shares -- they intend to use this to specify the ones that are running as Tor hidden services and thus are attack-resistant (but also extra slow-and-expensive to reach).  Interestingly the server selection policy on ''download'' should be that the K servers which are Tor hidden services should be downloaded from as a last resort. 
  * Several people -- again I'm sorry I've forgotten specific attribution -- want to identify which servers live in which cluster or co-lo or geographical area, and then to distribute shares evenly across clusters/colos/geographical-areas instead of evenly across servers.
   * Here's an example of this desire, Nathan Eisenberg asked on the mailing list for "Proximity Aware Decoding": http://allmydata.org/pipermail/tahoe-dev/2009-December/003286.html
@@ -61 +61 @@
 get the properties listed above, while keeping the filecaps small.
 
+==== note ====
+
+If you're using an immutable file upload erasure-coding helper then either you can't use this new feature of a new strategy for share placement or else we have to define some way for the user to communicate their share placement strategy to the helper.
+
 ==== tickets ====
 The main ticket: