I have been working in one application that don't have database and for storage only use redis and I never tried before to run it in production environment and o surprise the server is run but when try to load it says ups something went wrong and in the log it says ActiveRecord no conection stablish here is the error:
ActiveRecord::ConnectionNotEstablished (ActiveRecord::ConnectionNotEstablished): activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:404:in `retrieve_connection' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_specification.rb:170:in `retrieve_connection' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_specification.rb:144:in `connection' activerecord (3.2.8) lib/active_record/query_cache.rb:67:in `call' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call' actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:28:in `call' activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `_run__1956948221__call__4__callbacks' activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `send' activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback' activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `send' activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks' actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:27:in `call' actionpack (3.2.8) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' actionpack (3.2.8) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app' railties (3.2.8) lib/rails/rack/logger.rb:16:in `call' actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in `call' rack (1.4.1) lib/rack/methodoverride.rb:21:in `call' rack (1.4.1) lib/rack/runtime.rb:17:in `call' activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call' rack (1.4.1) lib/rack/lock.rb:15:in `call' rack-cache (1.2) lib/rack/cache/context.rb:136:in `forward' rack-cache (1.2) lib/rack/cache/context.rb:245:in `fetch' rack-cache (1.2) lib/rack/cache/context.rb:185:in `lookup' rack-cache (1.2) lib/rack/cache/context.rb:66:in `call!' rack-cache (1.2) lib/rack/cache/context.rb:51:in `call' railties (3.2.8) lib/rails/engine.rb:479:in `call' railties (3.2.8) lib/rails/application.rb:223:in `call' rack (1.4.1) lib/rack/content_length.rb:14:in `call' railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in `call' rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service' /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run' /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' /usr/lib/ruby/1.8/webrick/server.rb:162:in `start' /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' /usr/lib/ruby/1.8/webrick/server.rb:95:in `start' /usr/lib/ruby/1.8/webrick/server.rb:92:in `each' /usr/lib/ruby/1.8/webrick/server.rb:92:in `start' /usr/lib/ruby/1.8/webrick/server.rb:23:in `start' /usr/lib/ruby/1.8/webrick/server.rb:82:in `start' rack (1.4.1) lib/rack/handler/webrick.rb:13:in `run' rack (1.4.1) lib/rack/server.rb:265:in `start' railties (3.2.8) lib/rails/commands/server.rb:70:in `start' railties (3.2.8) lib/rails/commands.rb:55 railties (3.2.8) lib/rails/commands.rb:50:in `tap' railties (3.2.8) lib/rails/commands.rb:50 script/rails:6:in `require' script/rails:6
but well none of my models uses activerecord what is happening here?