Difference between revisions of "Structural Design Overview"

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(Made decisions: Chttp isn't that far along)
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* It will all be based on [http://en.wikipedia.org/wiki/Representational_State_Transfer REST]
 
* It will all be based on [http://en.wikipedia.org/wiki/Representational_State_Transfer REST]
* cHTTP will be used (certified HTTP which guarantees that only one post occurs. Implementation will soon be freely available)
+
* [[Certified HTTP]] will be used where appropriate (exactly-once messaging between reliable hosts). Implementation is ongoing.
 
* [[Capabilities]] will be used
 
* [[Capabilities]] will be used
 
* [[LLSD]] will probably stay on not be changed to JSON. According to Linden Lab this should be no problem as there is a library for most languages to handle LLSD.
 
* [[LLSD]] will probably stay on not be changed to JSON. According to Linden Lab this should be no problem as there is a library for most languages to handle LLSD.

Revision as of 13:19, 15 September 2007

In Meeting 1 Zero Linden was giving a small overview of how Linden Lab is thinking about a new architecture for the Second Life grid.

Today and Tomorrow

First a slide on how things work today:

SLGArchWG1-01-Grid Now.jpg

Today the viewer only connects to the region and the region keeps track of everything and acts as a proxy to the central databases. With the numbers envisioned in Project Motivation the central servers will not be able to cope with that.

The solution Linden Lab sees is to divide the structure into an Agent Domain and a Region Domain, each of them handling the components they are named after. Moreover there are some more central services such as Identity, Location, Currency and Search and there might be the case that multiple domains need to work together.

SLGArchWG1-02-Two Domains.jpg


Made decisions

  • It will all be based on REST
  • Certified HTTP will be used where appropriate (exactly-once messaging between reliable hosts). Implementation is ongoing.
  • Capabilities will be used
  • LLSD will probably stay on not be changed to JSON. According to Linden Lab this should be no problem as there is a library for most languages to handle LLSD.

Final example setup

SLGArchWG1-24-SL Grid 2008.jpg

If all this is implemented it might look like this in the end.