[taler-docs] branch master updated: multi sync

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dold pushed a commit to branch master
in repository docs.

The following commit(s) were added to refs/heads/master by this push:
     new 856a101  multi sync
856a101 is described below

commit 856a101e5ff8f6a7d199da9b59e9e559c5cbf5e0
Author: Florian Dold <address@hidden>
AuthorDate: Tue Apr 28 00:22:02 2020 +0530

    multi sync
---
 design-documents/005-wallet-backup-sync.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/design-documents/005-wallet-backup-sync.rst 
b/design-documents/005-wallet-backup-sync.rst
index 2a8ef3e..d91c3ff 100644
--- a/design-documents/005-wallet-backup-sync.rst
+++ b/design-documents/005-wallet-backup-sync.rst
@@ -106,6 +106,19 @@ purchase entity from the wallet that initiated the 
spending.
 Ghost entities are not added to the sync state.
 
 
+Multiple sync servers
+---------------------
+
+When a wallet is connected to multiple sync servers, it automatically
+propagates changes it received from one sync server to the others.  Local
+changes made by the wallet are propoagated to all sync servers.  The goal of
+this is to make the state of the sync servers converge.
+
+The different sync servers one wallet is enrolled with do not necessarily
+have the same set of other wallet enrolled.  Each sync server has a separate 
Lamport clock
+and contains a separate CRDT.
+
+
 References
 ==========
 

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