diff --git a/Socialmetrica.package/Nitter.class/class/columnKeys.st b/Socialmetrica.package/Nitter.class/class/columnKeys.st
deleted file mode 100644
index 426b297..0000000
--- a/Socialmetrica.package/Nitter.class/class/columnKeys.st
+++ /dev/null
@@ -1,3 +0,0 @@
-accessing
-columnKeys
-	^ #('url' 'healthy' 'healthy_percentage_overall' 'rss' 'version')
\ No newline at end of file
diff --git a/Socialmetrica.package/Nitter.class/class/columnsDictionary.st b/Socialmetrica.package/Nitter.class/class/columnsDictionary.st
new file mode 100644
index 0000000..e5d1f00
--- /dev/null
+++ b/Socialmetrica.package/Nitter.class/class/columnsDictionary.st
@@ -0,0 +1,8 @@
+accessing
+columnsDictionary
+	^ {
+		'url' -> 'url' . 
+		'healthy' -> 'healthy'.  
+		'healthy_percentage_overall' -> 'uptime' . 
+		'rss' -> 'rss' . 
+		'version' -> 'version'} asDictionary
\ No newline at end of file
diff --git a/Socialmetrica.package/Nitter.class/class/instanceRows.st b/Socialmetrica.package/Nitter.class/class/instanceRows.st
index 3f6c8e1..cc8b753 100644
--- a/Socialmetrica.package/Nitter.class/class/instanceRows.st
+++ b/Socialmetrica.package/Nitter.class/class/instanceRows.st
@@ -1,7 +1,8 @@
 accessing
 instanceRows
 	^ (self instances at: 'hosts') collect: [:rawRow | | newRow |
-		newRow := OrderedCollection new.
-		self columnKeys do: [:key | newRow add: (rawRow at: key) ].
+		newRow := NitterInstance new.
+		self columnsDictionary keysAndValuesDo: [:key :value | 
+			newRow writeSlotNamed: value value: (rawRow at: key) ].
 		newRow
 	].
\ No newline at end of file
diff --git a/Socialmetrica.package/Nitter.class/class/instances.st b/Socialmetrica.package/Nitter.class/class/instances.st
index f9bb202..74fdf73 100644
--- a/Socialmetrica.package/Nitter.class/class/instances.st
+++ b/Socialmetrica.package/Nitter.class/class/instances.st
@@ -1,4 +1,3 @@
 accessing
 instances
-
-	^ STONJSON fromString: 'https://status.d420.de/api/v1/instances' asUrl retrieveContents
\ No newline at end of file
+	^ self instancesCache 
\ No newline at end of file
diff --git a/Socialmetrica.package/Nitter.class/class/instancesCache.st b/Socialmetrica.package/Nitter.class/class/instancesCache.st
new file mode 100644
index 0000000..0aad01c
--- /dev/null
+++ b/Socialmetrica.package/Nitter.class/class/instancesCache.st
@@ -0,0 +1,9 @@
+accessing
+instancesCache
+	| cache cacheFile |
+	cacheFile := FileLocator temp / 'nitter-instances.ston'.
+	cacheFile exists
+		ifFalse: [ 
+			cache := STON fromString: 'https://status.d420.de/api/v1/instances' asUrl retrieveContents.
+			MarkupFile exportAsFileOn: cacheFile containing: cache ].
+	^ STON fromString: cacheFile contents
\ No newline at end of file
diff --git a/Socialmetrica.package/Nitter.class/class/viewInstancesFor..st b/Socialmetrica.package/Nitter.class/class/viewInstancesFor..st
index e03e939..bdccdc0 100644
--- a/Socialmetrica.package/Nitter.class/class/viewInstancesFor..st
+++ b/Socialmetrica.package/Nitter.class/class/viewInstancesFor..st
@@ -11,6 +11,6 @@ viewInstancesFor: aView
 	columnNames doWithIndex: [:aName :index | 
 		columnedList 
 			column: aName 
-			text: [:instanceRow | (instanceRow at: index) ifNil: [''] ] 
+			text: [:instanceRow | (instanceRow slots at: index) ifNil: [''] ] 
 	].
 	^ columnedList
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterInstance.class/README.md b/Socialmetrica.package/NitterInstance.class/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/Socialmetrica.package/NitterInstance.class/instance/printOn..st b/Socialmetrica.package/NitterInstance.class/instance/printOn..st
new file mode 100644
index 0000000..485e11e
--- /dev/null
+++ b/Socialmetrica.package/NitterInstance.class/instance/printOn..st
@@ -0,0 +1,5 @@
+accessing
+printOn: aStream
+	super printOn: aStream.
+	^ aStream
+		nextPutAll: '( ', self url ,' | uptime: ',  self uptime asString, ' )'
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterInstance.class/instance/uptime.st b/Socialmetrica.package/NitterInstance.class/instance/uptime.st
new file mode 100644
index 0000000..34489b5
--- /dev/null
+++ b/Socialmetrica.package/NitterInstance.class/instance/uptime.st
@@ -0,0 +1,3 @@
+accessing
+uptime
+	^ uptime
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterInstance.class/instance/url.st b/Socialmetrica.package/NitterInstance.class/instance/url.st
new file mode 100644
index 0000000..958fa17
--- /dev/null
+++ b/Socialmetrica.package/NitterInstance.class/instance/url.st
@@ -0,0 +1,3 @@
+accessing
+url
+	^ url
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterInstance.class/properties.json b/Socialmetrica.package/NitterInstance.class/properties.json
new file mode 100644
index 0000000..80134af
--- /dev/null
+++ b/Socialmetrica.package/NitterInstance.class/properties.json
@@ -0,0 +1,17 @@
+{
+	"commentStamp" : "",
+	"super" : "Object",
+	"category" : "Socialmetrica",
+	"classinstvars" : [ ],
+	"pools" : [ ],
+	"classvars" : [ ],
+	"instvars" : [
+		"url",
+		"healthy",
+		"uptime",
+		"rss",
+		"version"
+	],
+	"name" : "NitterInstance",
+	"type" : "normal"
+}
\ No newline at end of file