diff --git a/API.md b/API.md
index b0f9b84..533577a 100644
--- a/API.md
+++ b/API.md
@@ -19,6 +19,7 @@
     - [5.2 Examples](#52-examples)
     - [5.3 Result](#53-result)
       - [JSON output: `/api/search/<search-id>?q=<query>`](#json-output-apisearchsearch-idqquery)
+  - [6. Caching](#6-caching)
 
 ## 1. APPCONF
 
@@ -252,4 +253,16 @@ Search for a text in manuscipt descriptions:
 Results in:
 
 ```json
-```
\ No newline at end of file
+```
+
+## 6. Caching
+
+Due to performance some of the API calls are cached. So calls like `/api/<object-type>`
+result in a cache for all entities of `<object-type>` and their properties.
+
+If data is changed and the cache can be rebuild by adding a GET parameter
+to the above API calls:
+
+- `cache`. Possible values are:
+  - `no` cache is rebuild if newer data exists
+  - `reset` cache is always rebuild (exception: cache is not rebuild if it is newer than 1 minute)
\ No newline at end of file
diff --git a/build.properties b/build.properties
index 387f568..72d4243 100644
--- a/build.properties
+++ b/build.properties
@@ -1,11 +1,11 @@
-#Fri, 25 Sep 2020 18:18:04 +0200
+#Wed, 07 Oct 2020 15:54:23 +0200
 project.version.major=1
 project.version.minor=9
-project.version.patch=4
+project.version.patch=6
 
 project.app.name=ediarum.web
 project.app.folder=.
 
-repository.version=v1.1.1-28-gf46ddf8
+repository.version=v1.9.4-1-gb105fef
 
-project.version.date=2020-09-25.18-18-04
+project.version.date=2020-10-07.15-54-23
diff --git a/build/ediarum.web_v1.9.4.2020-09-25.18-18-04.xar b/build/ediarum.web_v1.9.6.2020-10-07.15-54-23.xar
similarity index 97%
rename from build/ediarum.web_v1.9.4.2020-09-25.18-18-04.xar
rename to build/ediarum.web_v1.9.6.2020-10-07.15-54-23.xar
index 5f33f3b..afd282a 100644
Binary files a/build/ediarum.web_v1.9.4.2020-09-25.18-18-04.xar and b/build/ediarum.web_v1.9.6.2020-10-07.15-54-23.xar differ
diff --git a/content/edweb-api.xql b/content/edweb-api.xql
index fff3cd5..50161bf 100644
--- a/content/edweb-api.xql
+++ b/content/edweb-api.xql
@@ -93,21 +93,31 @@ declare function edwebapi:filter-list(
 declare function edwebapi:get-all(
     $app-target as xs:string,
     $limit as xs:string?,
-    $cache as xs:string
+    $cache as xs:string,
+    $with-filter as xs:boolean
 ) 
 {
     let $object-types := edwebapi:get-config($app-target)//appconf:object/@xml:id
     let $found-objects :=
         for $object-type in $object-types
         let $map :=
-            edwebapi:load-map-from-cache(
-                "edwebapi:get-object-list", 
-                [$app-target, $object-type, $limit], 
-                if ($cache = "yes")
-                then ()
-                else edwebapi:data-collection($app-target), 
-                $cache = "no"
-            )
+            if ($with-filter)
+            then
+                edwebapi:load-map-from-cache(
+                    "edwebapi:get-object-list", 
+                    [$app-target, $object-type, $limit], 
+                    edwebapi:data-collection($app-target),
+                    $cache = "no", 
+                    $cache = "reset"
+                )
+            else
+                edwebapi:load-map-from-cache(
+                    "edwebapi:get-object-list-without-filter", 
+                    [$app-target, $object-type, $limit], 
+                    edwebapi:data-collection($app-target),
+                    $cache = "no", 
+                    $cache = "reset"
+                )
         return $map?list
     return
         map:merge((map:entry("date-time", current-dateTime()), $found-objects))
@@ -211,7 +221,8 @@ declare function edwebapi:load-map-from-cache(
     $function-name as xs:string, 
     $params as array(*), 
     $data-collection as xs:string?, 
-    $reload as xs:boolean?
+    $soft-reload as xs:boolean?,
+    $hard-reload as xs:boolean?
 ) as map(*) 
 {
     let $node-set as node()* := 
@@ -233,27 +244,28 @@ declare function edwebapi:load-map-from-cache(
     let $cache-file-name := substring-after($function-name, ":")||"-"
         ||translate(string-join($params?*[.!='cache'], "-"),'/','__')||".json"
     let $load-cache := util:binary-doc($cache-collection||"/"||$cache-file-name)
-    let $load-from-cache := exists($load-cache)
+    let $cache-exists := exists($load-cache)
     let $load-map := 
-        if($load-from-cache) 
+        if($cache-exists) 
         then parse-json(util:binary-to-string($load-cache))
         else false()
     let $current-date-time := current-dateTime()            
     let $cache-is-new :=
-        if ($load-from-cache)
+        if ($cache-exists)
         then ($current-date-time < xs:dateTime($load-map?date-time) + xs:dayTimeDuration("PT1M"))
         else false()
-    let $load-from-cache := $load-from-cache and not($reload)
     let $cache-is-up-to-date :=
-        if ($load-from-cache and count($node-set)=0)
+        if ($cache-exists and count($node-set)=0)
         then true()
-        else if ($load-from-cache)
+        else if ($cache-exists and $soft-reload)
         then
             let $since := $load-map?date-time
             let $last-modified := xmldb:find-last-modified-since($node-set, $since)
             return count($last-modified)=0
+        else if ($cache-exists)
+        then true()
         else false()
-    let $load-from-cache := ($load-from-cache and $cache-is-up-to-date) or $cache-is-new
+    let $load-from-cache := $cache-is-new or (not($hard-reload) and $cache-is-up-to-date)
     let $apply-and-store :=
         if ($load-from-cache)
         then ()
@@ -470,6 +482,7 @@ declare function edwebapi:eval-filters-for-object(
     $object-xml as node()
 ) as map(*)
 {
+    let $cache := ""
     let $filters := $object-def/appconf:filters/appconf:filter
     let $data-collection := edwebapi:data-collection($app-target)
     let $filter-values :=
@@ -493,7 +506,8 @@ declare function edwebapi:eval-filters-for-object(
                         "edwebapi:get-relation-list",
                         [$app-target, $rel-type-name, ()],
                         $data-collection,
-                        false()
+                        $cache = "no",
+                        $cache = "reset"
                     )
                 let $items := $relations?list?*[?($rel-perspective) = $object?id]
                 for $i in $items return
@@ -856,10 +870,9 @@ declare function edwebapi:get-search-results(
            edwebapi:load-map-from-cache(
                 "edwebapi:get-object-list", 
                 [$app-target, $object-type, $limit], 
-                if ($cache = "yes")
-                then ()
-                else edwebapi:data-collection($app-target), 
-                $cache = "no"
+                edwebapi:data-collection($app-target),
+                $cache = "no",
+                $cache = "reset"
             )
         return 
             edwebapi:get-object-list-with-search(
@@ -985,6 +998,7 @@ declare function edwebapi:get-relation-list(
     $limit as xs:string?
 ) as map(*) 
 {
+    let $cache := ""
     let $config := edwebapi:get-config($app-target)
     let $relation-type := $config//appconf:relation[@xml:id=$relation-type-name]
     let $subject-type := $relation-type/@subject/string()
@@ -1005,8 +1019,9 @@ declare function edwebapi:get-relation-list(
             edwebapi:load-map-from-cache(
                 "edwebapi:get-object-list-without-filter", 
                 [$app-target, $object-type, $limit], 
-                (), 
-                false()
+                edwebapi:data-collection($app-target), 
+                $cache = "no",
+                $cache = "reset"
             )
         return $map?list?* (: "list-without-filter" :)
 
@@ -1015,8 +1030,9 @@ declare function edwebapi:get-relation-list(
             edwebapi:load-map-from-cache(
                 "edwebapi:get-object-list-without-filter", 
                 [$app-target, $subject-type, $limit], 
-                (), 
-                false()
+                edwebapi:data-collection($app-target), 
+                $cache = "no",
+                $cache = "reset"
             )
         return $map?list?* (: "list-without-filter" :)
     let $data-collection := edwebapi:data-collection($app-target)
diff --git a/expath-pkg.xml b/expath-pkg.xml
index efb4148..a54d629 100644
--- a/expath-pkg.xml
+++ b/expath-pkg.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<package xmlns="http://expath.org/ns/pkg" name="http://www.bbaw.de/telota/software/ediarum/web/lib" abbrev="edweb" version="1.9.4" spec="1.0">
+<package xmlns="http://expath.org/ns/pkg" name="http://www.bbaw.de/telota/software/ediarum/web/lib" abbrev="edweb" version="1.9.6" spec="1.0">
     <title>ediarum.web</title>
     <xquery>
       <namespace>http://www.bbaw.de/telota/software/ediarum/web/lib</namespace>
diff --git a/views/api/all-list.xql b/views/api/all-list.xql
index 2239420..a26c281 100644
--- a/views/api/all-list.xql
+++ b/views/api/all-list.xql
@@ -21,10 +21,11 @@ let $id-type :=
     else $id-type
 
 (: let $id-type := request:get-parameter("id-type", request:get-attribute("id-type")) :)
-let $all-list := edwebapi:get-all($app-target, $limit, $cache)
 return 
     if ($id-type = "all")
     then
-        $all-list
+        let $all-list := edwebapi:get-all($app-target, $limit, $cache, false())
+        return $all-list
     else
-        map:remove($all-list, "date-time")?*[?filter?($id-type)||"" != ""]
+        let $all-list := edwebapi:get-all($app-target, $limit, $cache, true())
+        return map:remove($all-list, "date-time")?*[?filter?($id-type)||"" != ""]
diff --git a/views/api/object-list.xql b/views/api/object-list.xql
index 4f8ceeb..c29ef47 100644
--- a/views/api/object-list.xql
+++ b/views/api/object-list.xql
@@ -57,30 +57,27 @@ let $result :=
         edwebapi:load-map-from-cache(
             "edwebapi:get-object-list-without-filter", 
             [$app-target, $object-type, $limit], 
-            if ($cache = "yes")
-            then ()
-            else edwebapi:data-collection($app-target), 
-            $cache = "no"
+            edwebapi:data-collection($app-target),
+            $cache = "no", 
+            $cache = "reset"
         )
     else if ($is-object) 
     then
         edwebapi:load-map-from-cache(
             "edwebapi:get-object-list", 
             [$app-target, $object-type, $limit], 
-            if ($cache = "yes")
-            then ()
-            else edwebapi:data-collection($app-target), 
-            $cache = "no"
+            edwebapi:data-collection($app-target), 
+            $cache = "no",
+            $cache = "reset"
         )
     else if ($is-relation) 
     then 
         edwebapi:load-map-from-cache(
             "edwebapi:get-relation-list",
             [$app-target, $object-type, $limit], 
-            if ($cache = "yes")
-            then ()
-            else edwebapi:data-collection($app-target), 
-            $cache = "no"
+            edwebapi:data-collection($app-target), 
+            $cache = "no",
+            $cache = "reset"
         )
     else $object-type||" isn't defined for '"||$app-target||"'."
 return