devdocs/specs/todo-before-release.txt

@@ -37,6 +37,19 @@ DB INDEXES / PERFORMANCE
 		- Useful for learning: https://www.datadoghq.com/blog/postgresql-monitoring/
 		- 
 
+DB CONNECTIONS:
+https://news.ycombinator.com/item?id=18425923
+wild_preference 2 hours ago [-]
+The other half of this is correctly using the connection pool in the application layer to begin with.
+One of the most common performance errors I see in random http applications is grabbing db connections for too long, like in middleware, or too aggressively in parallel queries.
+reply	
+sb8244 2 hours ago [-]
+This is so true and easy to overlook until a post mortem. A great exercise is to audit how connections are maintained in your application, before it's too late.
+reply	
+macintux 1 hour ago [-]
+I'm reminded of a systems failure described in, IIRC, the O'Reilly book "Release It!". Java ODBC exception swallowed resulted in eventually running out of connections.
+Very tough problem to troubleshoot without extensive monitoring. 
+
 
 DOCUMENTATION TODO's