Changes between Version 9 and Version 10 of UseCases

Timestamp:

2007-11-05T08:30:43Z (18 years ago)

Author:

nejucomo

Comment:

Add section on node role archetypes and deployment experiences.

UseCases

@@ +1 @@
+= Network Configurations =
+
 There are several ways that people might want to use Tahoe.  We're not necessarily committed to satisfying all of these use cases -- these are just possibilities.
 
-Use Cases
+As these network configurations develop, the ''node roles'' section develops in complement.
+
 ||__name__||__number of nodes__||__administrative domains__||__node capacity__||__node availability__||__churn__||
 ||''friendnet''||2-10||many domains, but all trusted||mixed||mixed||low||
@@ -18 +21 @@
 
 
+= Node Roles =
 
+Network configurations can usually be thought of in terms of a topology connecting particular ''node roles''.  These roles often fulfill the same abstraction across network configurations.  By allowing specialized role configurations, a plethora of custom network configurations can be deployed without modifying the code.
+
+Here are some archetypal roles:
+
+ * The ''Available Migrator'' consumes storage from a changing address.
+   * '''Migration Pattern Availability''' - Availability is high, but address changes are frequent.
+   * Examples: Laptops, mobile devices, poor DHCP configurations.
+   * Should this role supply storage?  If so, how does it affect average file availability?  -reliability?
+
+ * The ''Ephemeral Consumer'' consumes storage, but lacks availability.
+   * '''Poor availability''' - Availability is low, such as a node that is only up when consuming storage service.
+   * Examples: Backup service customer.
+   * Hints:
+     * Set ''size limit'' config option to 0.  (Is this a kludge currently?  -Nejucomo)
+
+ * A ''Grid Storage Servant'' provides storage but does not consume it.
+   * '''High Availability''' - An individual file's availability is largely dependent on average storage availability.
+   * '''Remote Control''' - Typically a provider configures many nodes through a centralized manner for convenience.
+   * '''Non Consumer''' - Specialized storage providers do not consume storage services.
+ 
+ * A ''Grid Manager'' does not provide storage services but controls storage servents.
+
+
+= Deployment =
+
+== The Test Grid ==
+
+...  Put your experience with particular configurations here ...
+
+