diff --git a/lib/vmpooler/api/v1.rb b/lib/vmpooler/api/v1.rb
index d10bdc4..0540b65 100644
--- a/lib/vmpooler/api/v1.rb
+++ b/lib/vmpooler/api/v1.rb
@@ -544,6 +544,9 @@ module Vmpooler
                 arg.keys.each do |tag|
                     backend.hset('vmpooler__vm__' + params[:hostname], 'tag:' + tag, arg[tag])
                     backend.hset('vmpooler__tag__' + Date.today.to_s, params[:hostname] + ':' + tag, arg[tag])
+
+                    # Auto-expire summary index
+                    backend.expire('vmpooler__tag__' + Date.today.to_s, (Vmpooler::API.settings.config[:redis]['data_ttl'].to_i * 60 * 60))
                 end
             end
           end
diff --git a/lib/vmpooler/pool_manager.rb b/lib/vmpooler/pool_manager.rb
index 7cb702b..413df11 100644
--- a/lib/vmpooler/pool_manager.rb
+++ b/lib/vmpooler/pool_manager.rb
@@ -66,6 +66,9 @@ module Vmpooler
         $redis.smove('vmpooler__pending__' + pool, 'vmpooler__ready__' + pool, vm)
         $redis.hset('vmpooler__boot__' + Date.today.to_s, pool + ':' + vm, finish)
 
+        # Auto-expire summary index
+        $redis.expire('vmpooler__boot__' + Date.today.to_s, ($config[:redis]['data_ttl'].to_i * 60 * 60))
+
         $logger.log('s', "[>] [#{pool}] '#{vm}' moved to 'ready' queue")
       end
     end
@@ -236,6 +239,9 @@ module Vmpooler
           $redis.hset('vmpooler__clone__' + Date.today.to_s, vm['template'] + ':' + vm['hostname'], finish)
           $redis.hset('vmpooler__vm__' + vm['hostname'], 'clone_time', finish)
 
+          # Auto-expire summary index
+          $redis.expire('vmpooler__clone__' + Date.today.to_s, ($config[:redis]['data_ttl'].to_i * 60 * 60))
+
           $logger.log('s', "[+] [#{vm['template']}] '#{vm['hostname']}' cloned from '#{vm['template']}' in #{finish} seconds")
         rescue
           $logger.log('s', "[!] [#{vm['template']}] '#{vm['hostname']}' clone appears to have failed")
diff --git a/spec/vmpooler/api/v1_spec.rb b/spec/vmpooler/api/v1_spec.rb
index 687c865..2a4ea29 100644
--- a/spec/vmpooler/api/v1_spec.rb
+++ b/spec/vmpooler/api/v1_spec.rb
@@ -302,7 +302,10 @@ describe Vmpooler::API::V1 do
       pools: [
         {'name' => 'pool1', 'size' => 5},
         {'name' => 'pool2', 'size' => 10}
-      ]
+      ],
+      redis: {
+        'data_ttl' => '168'
+      }
     } }
 
     before do
@@ -310,6 +313,7 @@ describe Vmpooler::API::V1 do
       app.settings.set :redis, redis
 
       allow(redis).to receive(:exists).and_return '1'
+      allow(redis).to receive(:expire).with('vmpooler__tag__' + Date.today.to_s, 604800).and_return '1'
       allow(redis).to receive(:hset).and_return '1'
     end
 
diff --git a/spec/vmpooler/pool_manager_spec.rb b/spec/vmpooler/pool_manager_spec.rb
index d94d3b3..df1ac5e 100644
--- a/spec/vmpooler/pool_manager_spec.rb
+++ b/spec/vmpooler/pool_manager_spec.rb
@@ -82,11 +82,17 @@ describe 'Pool Manager' do
     end
 
     context 'a host with proper summary' do
+      let(:config) { {
+        redis: { 'data_ttl' => '168' }
+      } }
+
+
       before do
         allow(host).to receive(:summary).and_return true
         allow(host).to receive_message_chain(:summary, :guest).and_return true
         allow(host).to receive_message_chain(:summary, :guest, :hostName).and_return vm
 
+        allow(redis).to receive(:expire).with('vmpooler__boot__' + Date.today.to_s, 604800).and_return '1'
         allow(redis).to receive(:hget)
         allow(redis).to receive(:smove)
         allow(redis).to receive(:hset)