diff --git a/README.md b/README.md
index 1f61351..7389829 100644
--- a/README.md
+++ b/README.md
@@ -103,6 +103,10 @@ option `-setup data_dir Dir`.
     "$schema": "http://json-schema.org/draft-04/schema#",
     "additionalProperties": false,
     "properties": {
+        "cache_dir": {
+            "description": "Location of cache, default is 'setup:data_dir()'",
+            "type": "string"
+        },
         "extra_pubkeys": {
             "default": [],
             "description": "Additional worker pubkeys, sharing rewards",
diff --git a/ebin/gmhive_client.app b/ebin/gmhive_client.app
index 50b9d5b..7fb10f6 100644
--- a/ebin/gmhive_client.app
+++ b/ebin/gmhive_client.app
@@ -1,6 +1,6 @@
 {application,gmhive_client,
              [{description,"Gajumaru Hive Client"},
-              {vsn,"0.8.2"},
+              {vsn,"0.8.3"},
               {registered,[]},
               {applications,[kernel,stdlib,sasl,gproc,inets,ssl,enoise,
                              gmconfig,gmhive_protocol,gmhive_worker]},
diff --git a/priv/gmhc_schema.json b/priv/gmhc_schema.json
index 6c0371a..99fbab4 100644
--- a/priv/gmhc_schema.json
+++ b/priv/gmhc_schema.json
@@ -2,6 +2,10 @@
     "$schema": "http://json-schema.org/draft-04/schema#",
     "additionalProperties": false,
     "properties": {
+        "cache_dir": {
+            "description": "Location of cache, default is 'setup:data_dir()'",
+            "type": "string"
+        },
         "extra_pubkeys": {
             "default": [],
             "description": "Additional worker pubkeys, sharing rewards",
diff --git a/src/gmhc_app.erl b/src/gmhc_app.erl
index f5e98a1..51fe8f9 100644
--- a/src/gmhc_app.erl
+++ b/src/gmhc_app.erl
@@ -1,6 +1,6 @@
 %% -*- mode: erlang; erlang-indent-level: 4; indent-tabs-mode: nil -*-
 -module(gmhc_app).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -behaviour(application).
 
diff --git a/src/gmhc_config.erl b/src/gmhc_config.erl
index 19b0623..f05c1bd 100644
--- a/src/gmhc_config.erl
+++ b/src/gmhc_config.erl
@@ -1,5 +1,5 @@
 -module(gmhc_config).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([ load_config/0
         , get_config/1
diff --git a/src/gmhc_config_schema.erl b/src/gmhc_config_schema.erl
index 7276efa..c8e2d4e 100644
--- a/src/gmhc_config_schema.erl
+++ b/src/gmhc_config_schema.erl
@@ -1,5 +1,5 @@
 -module(gmhc_config_schema).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([ schema/0
         , to_json/0
@@ -51,6 +51,7 @@ schema() ->
          , pool => pool()
          , pool_admin => pool_admin()
          , workers => workers()
+         , cache_dir => str(#{description => <<"Location of cache, default is 'setup:data_dir()'">>})
          , report => str(#{ enum  => [<<"debug">>, <<"progress">>, <<"silent">>]
                           , default => <<"silent">>
                           , description => <<"Progress reporting">> })
diff --git a/src/gmhc_connector.erl b/src/gmhc_connector.erl
index 7c28d9b..294d6c9 100644
--- a/src/gmhc_connector.erl
+++ b/src/gmhc_connector.erl
@@ -1,5 +1,5 @@
 -module(gmhc_connector).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -behaviour(gen_server).
 
diff --git a/src/gmhc_connectors_sup.erl b/src/gmhc_connectors_sup.erl
index b94b8a9..3996d71 100644
--- a/src/gmhc_connectors_sup.erl
+++ b/src/gmhc_connectors_sup.erl
@@ -1,5 +1,5 @@
 -module(gmhc_connectors_sup).
--vsn("0.6.1").
+-vsn("0.8.3").
 -behavior(supervisor).
 
 -export([ start_link/0
diff --git a/src/gmhc_counters.erl b/src/gmhc_counters.erl
index d7210ba..270e6e8 100644
--- a/src/gmhc_counters.erl
+++ b/src/gmhc_counters.erl
@@ -1,5 +1,5 @@
 -module(gmhc_counters).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([ initialize/0 ]).
 
diff --git a/src/gmhc_eureka.erl b/src/gmhc_eureka.erl
index dafdf17..9059ed7 100644
--- a/src/gmhc_eureka.erl
+++ b/src/gmhc_eureka.erl
@@ -1,9 +1,12 @@
 -module(gmhc_eureka).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([get_pool_address/0]).
 -export([cache_good_address/1,
-         invalidate_cache/0]).
+         invalidate_cache/0,
+         cached_address/0,
+         cache_filename/0,
+         cache_dir/0]).
 
 -include_lib("kernel/include/logger.hrl").
 -include("gmhc_events.hrl").
@@ -99,10 +102,27 @@ cache_filename() ->
     cache_filename(cache_info()).
 
 cache_filename(#{network := Network, pubkey := Pubkey}) ->
-    Path = filename:join(setup:data_dir(), Network),
+    Path = filename:join(cache_dir(), Network),
     <<"ak_", PKShort:8/binary, _/binary>> = Pubkey,
     filename:join(Path, "gmhc_eureka." ++ binary_to_list(PKShort) ++ ".cache").
 
+cache_dir() ->
+    case gmconfig:find_config([<<"cache_dir">>]) of
+        {ok, D} ->
+            D;
+        undefined ->
+            case setup_zomp:is_zomp_context() of
+                true ->
+                    cache_dir_zomp();
+                false ->
+                    filename:join(setup:data_dir(), "gmhive.cache")
+            end
+    end.
+
+cache_dir_zomp() ->
+    #{package_id := {Realm, App, _}} = zx_daemon:meta(),
+    filename:join(zx_lib:ppath(var, {Realm, App}), "gmhive.cache").
+
 get_pool_address_() ->
     case gmconfig:find_config([<<"pool_admin">>, <<"url">>], [user_config]) of
         {ok, URL0} ->
diff --git a/src/gmhc_events.erl b/src/gmhc_events.erl
index ffbd6da..55cc220 100644
--- a/src/gmhc_events.erl
+++ b/src/gmhc_events.erl
@@ -1,5 +1,5 @@
 -module(gmhc_events).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([subscribe/1,
          ensure_subscribed/1,
diff --git a/src/gmhc_handler.erl b/src/gmhc_handler.erl
index de44e68..f32bcd9 100644
--- a/src/gmhc_handler.erl
+++ b/src/gmhc_handler.erl
@@ -1,5 +1,5 @@
 -module(gmhc_handler).
--vsn("0.6.1").
+-vsn("0.8.3").
 -behavior(gen_server).
 
 -export([ start_link/0
diff --git a/src/gmhc_lib.erl b/src/gmhc_lib.erl
index 48ecf92..131dde1 100644
--- a/src/gmhc_lib.erl
+++ b/src/gmhc_lib.erl
@@ -1,4 +1,5 @@
 -module(gmhc_lib).
+-vsn("0.8.3").
 
 -export([ rand/1 ]).
 
diff --git a/src/gmhc_server.erl b/src/gmhc_server.erl
index a9efc33..ae51c57 100644
--- a/src/gmhc_server.erl
+++ b/src/gmhc_server.erl
@@ -1,5 +1,5 @@
 -module(gmhc_server).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -behaviour(gen_server).
 
diff --git a/src/gmhc_sup.erl b/src/gmhc_sup.erl
index 7504a16..a2723bf 100644
--- a/src/gmhc_sup.erl
+++ b/src/gmhc_sup.erl
@@ -1,6 +1,6 @@
 %% -*- mode: erlang; erlang-indent-level: 4; indent-tabs-mode: nil -*-
 -module(gmhc_sup).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -behaviour(supervisor).
 
diff --git a/src/gmhc_workers.erl b/src/gmhc_workers.erl
index 3b026ee..b89df0a 100644
--- a/src/gmhc_workers.erl
+++ b/src/gmhc_workers.erl
@@ -8,7 +8,7 @@
 %%%-------------------------------------------------------------------
 
 -module(gmhc_workers).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([
           get_worker_configs/0
diff --git a/src/gmhive_client.erl b/src/gmhive_client.erl
index 7779d26..0696120 100644
--- a/src/gmhive_client.erl
+++ b/src/gmhive_client.erl
@@ -1,5 +1,5 @@
 -module(gmhive_client).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([ connect/1
         , disconnect/1
diff --git a/zomp.meta b/zomp.meta
index 0641e5f..2f3f445 100644
--- a/zomp.meta
+++ b/zomp.meta
@@ -2,9 +2,9 @@
 {type,app}.
 {modules,[]}.
 {prefix,"gmhc"}.
-{author,"Ulf Wiger, QPQ AG"}.
 {desc,"Gajumaru Hive Client"}.
-{package_id,{"uwiger","gmhive_client",{0,8,2}}}.
+{author,"Ulf Wiger, QPQ AG"}.
+{package_id,{"uwiger","gmhive_client",{0,8,3}}}.
 {deps,[{"uwiger","gmhive_protocol",{0,2,0}},
        {"uwiger","gmhive_worker",{0,5,1}},
        {"uwiger","gmcuckoo",{1,2,4}},