Debug fetch_multi leaks

Author: drinkbeer

lib/identity_cache/cache_fetcher.rb

@@ -67,6 +67,32 @@ def clear
     def fetch_multi(keys, &block)
       results = cas_multi(keys, &block)
       results = add_multi(keys, &block) if results.nil?
+
+      # binding.pry
+
+      def do_division_by_zero; 5 / 0; end
+      # begin
+      #   do_division_by_zero
+      # rescue => exception
+      #   puts "catch_fetcher - caught the division_by_zero exception in fetch_multi method"
+      #   puts exception.backtrace
+      #   # raise # always reraise
+      # end
+
+      keys.each do |k|
+        puts "CacheFetcher - Found Product key: #{k}" if k.include?(":blob:Product:")
+
+        if k.include?(":blob:Product:")
+          begin
+            do_division_by_zero
+          rescue => exception
+            puts "CacheFetcher - caught the Product key :blob:Product: with exceptions in fetch_multi method"
+            puts exception.backtrace
+            # raise # always reraise
+          end
+        end
+
+      end
       results
     end
 

lib/identity_cache/fallback_fetcher.rb

@@ -22,6 +22,17 @@ def clear
 
     def fetch_multi(keys)
       results = @cache_backend.read_multi(*keys)
+
+      # binding.pry
+      def do_division_by_zero; 5 / 0; end
+      begin
+        do_division_by_zero
+      rescue => exception
+        puts "catch_fetcher - caught the division_by_zero exception in fetch_multi method"
+        puts exception.backtrace
+        # raise # always reraise
+      end
+
       missed_keys = keys - results.keys
       unless missed_keys.empty?
         replacement_results = yield missed_keys

lib/identity_cache/memoized_cache_proxy.rb

@@ -106,6 +106,10 @@ def fetch_multi(*keys)
       result = ActiveSupport::Notifications.instrument("cache_fetch_multi.identity_cache") do |payload|
         payload[:resolve_miss_time] = 0.0
 
+        keys.each do |k|
+          puts "MemoizedCacheProxy - Found Product key: #{k}" if k.include?(":blob:Product:")
+        end
+
         result = fetch_multi_memoized(keys) do |non_memoized_keys|
           memo_miss_keys = non_memoized_keys
           @cache_fetcher.fetch_multi(non_memoized_keys) do |missing_keys|