4 files changed, 12 insertions, 14 deletions
diff --git a/lib/rbot/registry/daybreak.rb b/lib/rbot/registry/daybreak.rb
index 6058b408..233c3a0d 100644
--- a/lib/rbot/registry/daybreak.rb
+++ b/lib/rbot/registry/daybreak.rb
@@ -24,6 +24,11 @@ class Registry
       @registry ||= Daybreak::DB.new(@filename)
     end
 
+    def flush
+      return unless @registry
+      @registry.flush
+    end
+
     def optimize
       return unless @registry
       @registry.compact
diff --git a/lib/rbot/registry/dbm.rb b/lib/rbot/registry/dbm.rb
index a13cb8ce..9c0304a9 100644
--- a/lib/rbot/registry/dbm.rb
+++ b/lib/rbot/registry/dbm.rb
@@ -23,21 +23,10 @@ class Registry
       @registry ||= DBM.open(@filename, 0666, DBM::WRCREAT)
     end
 
-    def flush
-      return if !@registry
-      # ruby dbm has no flush, so we close/reopen :(
-      close
-      registry
-    end
-
     def dbexists?
       not Dir.glob(@filename + '.*').empty?
     end
 
-    def optimize
-      # unsupported!
-    end
-
   end
 
 end # Registry
diff --git a/lib/rbot/registry/sqlite.rb b/lib/rbot/registry/sqlite.rb
index 89e7d78c..1af5d242 100644
--- a/lib/rbot/registry/sqlite.rb
+++ b/lib/rbot/registry/sqlite.rb
@@ -29,10 +29,9 @@ class Registry
       @registry
     end
 
-    def flush
-    end
-
     def optimize
+      return unless @registry
+      @registry.execute('VACUUM')
     end
 
     def [](key)
diff --git a/lib/rbot/registry/tc.rb b/lib/rbot/registry/tc.rb
index 63bfdf78..4e248f42 100644
--- a/lib/rbot/registry/tc.rb
+++ b/lib/rbot/registry/tc.rb
@@ -36,6 +36,11 @@ class Registry
       @registry.sync
     end
 
+    def optimize
+      return unless @registry
+      @registry.optimize
+    end
+
   end
 
 end # Registry