conclusion for deployment

510_Deployment.asciidoc

@@ -15,3 +15,5 @@ include::510_Deployment/50_heap.asciidoc[]
 
 include::510_Deployment/60_file_descriptors.asciidoc[]
 
+include::510_Deployment/70_conclusion.asciidoc[]
+

510_Deployment/70_conclusion.asciidoc

@@ -0,0 +1,17 @@
+
+=== Revisit this list before production
+
+You are likely reading this section before you actually go into production.  
+The details covered in this chapter are good to be generally aware of, but it is 
+critical to revisit this entire list right before deploying to production.
+
+Some of the topics will simply stop you cold (such as too few available file
+descriptors).  These are easy enough to debug because they are quickly apparent.
+Other issues, such as split-brains and memory settings, are only visible once
+something bad happens.  At that point, the resolution is often messy and tedious.
+
+It is much better to pro-actively prevent these situations from occurring by configuring
+your cluster appropriately _before_ disaster strikes.  So if you are going to
+dog-ear (or bookmark) one section from the entire book, this chapter would be
+a good candidate.  The week before deploying to production, simply flip through
+the list presented here and check off all the recommendations.