diff --git a/devdocs/specs/postgres-useful-info.txt b/devdocs/specs/postgres-useful-info.txt
new file mode 100644
index 00000000..73c6a6bb
--- /dev/null
+++ b/devdocs/specs/postgres-useful-info.txt
@@ -0,0 +1,27 @@
+POSTGRES USEFUL INFO
+
+//this is handy:
+http://okigiveup.net/what-postgresql-tells-you-about-its-performance/
+
+How to find log files and configure them
+https://www.endpoint.com/blog/2014/11/12/dear-postgresql-where-are-my-logs
+
+
+
+2020-05-21 THIS SUPERSEDES BELOW  
+HOW TO FIND SHITTY INDEXES: https://gist.github.com/jberkus/6b1bcaf7724dfc2a54f3
+
+top five tables by size (bytes)
+SELECT 
+       relname AS "table_name", 
+       pg_table_size(C.oid) AS "table_size" 
+FROM 
+       pg_class C 
+LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) 
+WHERE nspname NOT IN ('pg_catalog', 'information_schema') AND nspname !~ '^pg_toast' AND relkind IN ('r') 
+ORDER BY pg_table_size(C.oid) 
+DESC LIMIT 10;
+
+
+TOTAL DATABASE SIZE
+select pg_database_size(current_database());//size in bytes
\ No newline at end of file
diff --git a/server/AyaNova/models/MetricDD.cs b/server/AyaNova/models/MetricDD.cs
new file mode 100644
index 00000000..bea48144
--- /dev/null
+++ b/server/AyaNova/models/MetricDD.cs
@@ -0,0 +1,31 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace AyaNova.Models
+{
+
+    /// <summary>
+    /// Metric for ONE DAY interval stats
+    /// </summary>
+    public class MetricDD
+    {
+        [Required]
+        [Key]
+        public DateTime t { get; set; }
+        public long AttachmentFileSize { get; set; }
+        public long AttachmentFileCount { get; set; }
+        public long AttachmentFilesAvailableSpace { get; set; }
+
+        public long UtilityFileSize { get; set; }
+        public long UtilityFileCount { get; set; }
+        public long UtilityFilesAvailableSpace { get; set; }
+
+
+
+
+        //ef core requires this
+        public MetricDD() { t = System.DateTime.UtcNow; }
+
+
+    }//eoc
+}//eons
diff --git a/server/AyaNova/models/MetricHH.cs b/server/AyaNova/models/MetricHH.cs
new file mode 100644
index 00000000..d93d3cc5
--- /dev/null
+++ b/server/AyaNova/models/MetricHH.cs
@@ -0,0 +1,28 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace AyaNova.Models
+{
+
+    /// <summary>
+    /// Metric for ONE HOUR interval status
+    /// </summary>
+    public class MetricHH
+    {
+        [Required]
+        [Key]
+        public DateTime t { get; set; }
+        public long Test { get; set; }
+
+
+        //ef core requires this
+        public MetricHH() { t = System.DateTime.UtcNow; }
+
+        public MetricHH(long test)
+        {
+            t = System.DateTime.UtcNow;
+            Test = test;
+
+        }
+    }//eoc
+}//eons