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make a note of the limitations of the current implementation

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1 parent 5be81d5 commit aa53251f6e2f2bf37b415027cce160f4740f9cc1 @jamis jamis committed May 12, 2011
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  1. +12 −0 README.mkd
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@@ -32,3 +32,15 @@ task:
$ rake db:snapshot[scenarios/real-estate]
...
$ rake db:snapshot:restore[scenarios/telemarketer]
+
+
+Limitations
+-----------
+
+The current version will probably fail when there are foreign key constraints,
+since the order the tables and rows are restored is not guaranteed to be in
+any particular order.
+
+Also, even moderately large data sets (e.g. multiple thousands of rows) may
+result in poor performance during snapshot and restore, since the data is all
+loaded into memory.

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