--- a/OrthancServer/Resources/Configuration.json	Tue Nov 23 09:20:59 2021 +0100
+++ b/OrthancServer/Resources/Configuration.json	Tue Nov 23 09:22:11 2021 +0100
@@ -40,7 +40,13 @@
   // in the storage (a value of "0" indicates no limit on the number
   // of patients)
   "MaximumPatientCount" : 0,
-  
+
+  // Maximum size of the storage cache in MB.  The storage cache
+  // is stored in RAM and contains a copy of recently accessed
+  // files (written or read).  A value of "0" indicates the cache
+  // is disabled.  (new in Orthanc 1.9.8)
+  "MaximumStorageCacheSize" : 128,
+
   // List of paths to the custom Lua scripts that are to be loaded
   // into this instance of Orthanc
   "LuaScripts" : [
@@ -837,5 +843,12 @@
   // disk space and might lead to HTTP timeouts on large archives). If
   // set to "true", the chunks of the ZIP file are progressively sent
   // as soon as one DICOM file gets compressed (new in Orthanc 1.9.4)
-  "SynchronousZipStream" : true
+  "SynchronousZipStream" : true,
+
+  // Default number of loader threads when generating Zip archive/media.
+  // A value of 0 means reading and writing are performed in sequence
+  // (default behaviour).  A value > 1 is meaningful only if the storage
+  // is a distributed network storage (e.g object storage plugin).
+  // (new in Orthanc 1.9.8)
+  "ZipLoaderThreads": 0
 }