[Checkins] SVN: gocept.zeoraid/trunk/doc/OPERATION.txt Start writing general operational notes.

[Christian Theune]

Log message for revision 105538:
  Start writing general operational notes.
  

Changed:
  A   gocept.zeoraid/trunk/doc/OPERATION.txt

-=-
Added: gocept.zeoraid/trunk/doc/OPERATION.txt
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--- gocept.zeoraid/trunk/doc/OPERATION.txt	                        (rev 0)
+++ gocept.zeoraid/trunk/doc/OPERATION.txt	2009-11-09 15:35:31 UTC (rev 105538)
@@ -0,0 +1,22 @@
+=================
+Operational notes
+=================
+
+Packing
+=======
+
+ZODBs packing operation ist commutative with the operation of appending
+transactions, so that for a series of transactions X and a point in time T the
+following holds:
+
+pack(T) + append(X) == append(X) + pack(T)
+
+Due to this you are free to pack storages any way you want:
+
+- via zeopack to a zeoraid server
+- via zeopack to each of the backend storages
+- via pack on your application server
+
+We do *recommend* to pack them shortly after each other to avoid application
+errors WRT historical data. (Those won't be database errors but your
+application will fail to undo or retrieve historical data reliably.)


Property changes on: gocept.zeoraid/trunk/doc/OPERATION.txt
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Added: svn:eol-style
   + native