redis-rails
Redis stores for Ruby on Rails
When trying to deploy an app with ruby 2.2.0 and rails 4.2.0 with gems redis v3.0.1 and hiredis v0.4.5 task which responsible for interactions with redis server fails with the following error:
.....ruby/2.2.0/gems/hiredis-0.4.5/lib/hiredis/ext/hiredis_ext.so: undefined symbol: rb_thread_select
cap aborted!
Does anyone faced the same issue?
Source: (StackOverflow)
Hope everything is well. I have the following problem and was hoping you could help me out:
I'm trying to deploy my rails 4 app using vagrant and ansible. Part of the app is a redis server. I have this set up and running at a 192.168.33.2:6379, my rails app is running at 192.168.33.4 and running on ubuntu + nginx.
Even-though I have redis set up with redis-rb (gem in app) and initialize a redis object in one of my initializers with app global vars initiated from a YAML file:
$redis = Redis.new(:driver => :hiredis, :host => APP_CONFIG[:redis_host], :port => APP_CONFIG[:redis_port])
with APP_CONFIG[:redis_host] = 192.168.33.2, APP_CONFIG[:redis_port] = 6379
and bind 0.0.0.0 in my redis.conf file, I still receive the error Error connecting to Redis on 127.0.0.1:6379 (Errno::ECONNREFUSED) when I go to the rails app in my browser.
Running redis-cli -h 192.168.33.2 ping when vagrant ssh-ed into 192.168.33.4 returns pong. So connections can be made and I can reach the redis server / see the keys from 192.168.33.4...
Also running netstat -l in the terminal gives me: tcp 00 *:6379 *:* LISTEN
Does anyone know how I can fix this problem?
Thanks in advance!
Update
Note: I make use of the redis-rails gem and also use it in my app for the session_store & cache_store. (when not using redis it works). Configured in this way:
#config/initializers/session_store.rb
MyApp::Application.config.session_store :redis_store, {
:host => APP_CONFIG[:redis_host],
:port => APP_CONFIG[:redis_port],
:db => APP_CONFIG[:redis_db],
# :password => "mysecret",
:namespace => "_myapp_session"}, :expires_in => 90.minutes
#config/application.rb
config.cache_store = :redis_store,"redis://192.168.33.2:6379/12/api_cache", { expires_in: 3.minutes }
With trace:
redis (3.2.1) lib/redis/client.rb:331:in `rescue in establish_connection'
redis (3.2.1) lib/redis/client.rb:317:in `establish_connection'
redis (3.2.1) lib/redis/client.rb:94:in `block in connect'
redis (3.2.1) lib/redis/client.rb:279:in `with_reconnect'
redis (3.2.1) lib/redis/client.rb:93:in `connect'
redis (3.2.1) lib/redis/client.rb:350:in `ensure_connected'
redis (3.2.1) lib/redis/client.rb:207:in `block in process'
redis (3.2.1) lib/redis/client.rb:292:in `logging'
redis (3.2.1) lib/redis/client.rb:206:in `process'
redis (3.2.1) lib/redis/client.rb:112:in `call'
redis (3.2.1) lib/redis.rb:681:in `block in set'
redis (3.2.1) lib/redis.rb:37:in `block in synchronize'
/home/vagrant/.rubies/ruby_2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
redis (3.2.1) lib/redis.rb:37:in `synchronize'
redis (3.2.1) lib/redis.rb:677:in `set'
redis-store (1.1.6) lib/redis/store/interface.rb:9:in `set'
redis-store (1.1.6) lib/redis/store/ttl.rb:8:in `set'
redis-store (1.1.6) lib/redis/store/marshalling.rb:5:in `block in set'
redis-store (1.1.6) lib/redis/store/marshalling.rb:29:in `_marshal'
redis-store (1.1.6) lib/redis/store/marshalling.rb:5:in `set'
redis-rack (1.5.0) lib/rack/session/redis.rb:31:in `block in get_session'
redis-rack (1.5.0) lib/rack/session/redis.rb:55:in `with_lock'
redis-rack (1.5.0) lib/rack/session/redis.rb:28:in `get_session'
rack (1.6.4) lib/rack/session/abstract/id.rb:266:in `load_session'
actionpack (4.2.0) lib/action_dispatch/middleware/session/abstract_store.rb:43:in `block in load_session'
actionpack (4.2.0) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `stale_session_check!'
actionpack (4.2.0) lib/action_dispatch/middleware/session/abstract_store.rb:43:in `load_session'
rack (1.6.4) lib/rack/session/abstract/id.rb:151:in `load!'
rack (1.6.4) lib/rack/session/abstract/id.rb:147:in `load_for_write!'
rack (1.6.4) lib/rack/session/abstract/id.rb:73:in `[]='
actionpack (4.2.0) lib/action_controller/metal/request_forgery_protection.rb:314:in `real_csrf_token'
actionpack (4.2.0) lib/action_controller/metal/request_forgery_protection.rb:268:in `masked_authenticity_token'
actionpack (4.2.0) lib/action_controller/metal/request_forgery_protection.rb:260:in `form_authenticity_token'
actionpack (4.2.0) lib/abstract_controller/helpers.rb:67:in `form_authenticity_token'
actionview (4.2.0) lib/action_view/helpers/url_helper.rb:608:in `token_tag'
actionview (4.2.0) lib/action_view/helpers/form_tag_helper.rb:847:in `extra_tags_for_form'
actionview (4.2.0) lib/action_view/helpers/form_tag_helper.rb:861:in `form_tag_html'
actionview (4.2.0) lib/action_view/helpers/form_tag_helper.rb:866:in `form_tag_with_body'
actionview (4.2.0) lib/action_view/helpers/form_helper.rb:448:in `form_for'
components/frontend/app/views/frontend/pages/home.html.erb:22:in `_components_frontend_app_views_frontend_pages_home_html_erb___3446196759514705024_70018609103500'
actionview (4.2.0) lib/action_view/template.rb:145:in `block in render'
activesupport (4.2.0) lib/active_support/notifications.rb:166:in `instrument'
actionview (4.2.0) lib/action_view/template.rb:333:in `instrument'
actionview (4.2.0) lib/action_view/template.rb:143:in `render'
actionview (4.2.0) lib/action_view/renderer/template_renderer.rb:54:in `block (2 levels) in render_template'
actionview (4.2.0) lib/action_view/renderer/abstract_renderer.rb:39:in `block in instrument'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (4.2.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `instrument'
actionview (4.2.0) lib/action_view/renderer/abstract_renderer.rb:39:in `instrument'
actionview (4.2.0) lib/action_view/renderer/template_renderer.rb:53:in `block in render_template'
actionview (4.2.0) lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
actionview (4.2.0) lib/action_view/renderer/template_renderer.rb:52:in `render_template'
actionview (4.2.0) lib/action_view/renderer/template_renderer.rb:14:in `render'
actionview (4.2.0) lib/action_view/renderer/renderer.rb:42:in `render_template'
actionview (4.2.0) lib/action_view/renderer/renderer.rb:23:in `render'
actionview (4.2.0) lib/action_view/rendering.rb:100:in `_render_template'
actionpack (4.2.0) lib/action_controller/metal/streaming.rb:217:in `_render_template'
actionview (4.2.0) lib/action_view/rendering.rb:83:in `render_to_body'
actionpack (4.2.0) lib/action_controller/metal/rendering.rb:32:in `render_to_body'
actionpack (4.2.0) lib/action_controller/metal/renderers.rb:37:in `render_to_body'
actionpack (4.2.0) lib/abstract_controller/rendering.rb:25:in `render'
actionpack (4.2.0) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
activesupport (4.2.0) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/home/vagrant/.rubies/ruby_2.1.0/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
activesupport (4.2.0) lib/active_support/core_ext/benchmark.rb:12:in `ms'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
wicked_pdf (0.11.0) lib/wicked_pdf/pdf_helper.rb:23:in `render_with_wicked_pdf'
actionpack (4.2.0) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (4.2.0) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
actionpack (4.2.0) lib/abstract_controller/base.rb:198:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.2.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_process_action_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (4.2.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `instrument'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
actionpack (4.2.0) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.0) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.0) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.2.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.0) lib/action_controller/metal.rb:236:in `block in action'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:42:in `serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
railties (4.2.0) lib/rails/engine.rb:518:in `call'
railties (4.2.0) lib/rails/railtie.rb:194:in `public_send'
railties (4.2.0) lib/rails/railtie.rb:194:in `method_missing'
actionpack (4.2.0) lib/action_dispatch/routing/mapper.rb:51:in `serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.6.4) lib/rack/etag.rb:24:in `call'
rack (1.6.4) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.4) lib/rack/head.rb:13:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
better_errors (2.1.1) lib/better_errors/middleware.rb:59:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.4) lib/rack/runtime.rb:18:in `call'
rack (1.6.4) lib/rack/lock.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
railties (4.2.0) lib/rails/engine.rb:518:in `call'
railties (4.2.0) lib/rails/application.rb:164:in `call'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:94:in `process_request'
/usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:149:in `accept_and_process_next_request'
/usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
/usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler.rb:415:in `block (3 levels) in start_threads'
/usr/lib/ruby/vendor_ruby/phusion_passenger/utils.rb:111:in `block in create_thread_and_abort_on_exception'
Source: (StackOverflow)
I am downloading some images from a website and uploading these to a S3 bucket using Paperclip. When the images are loaded, I store an entity into the database and return it.
This is wrapped in Rails.cache.fetch call to cache the response.
It goes something like this.
Rails.cache.fetch("/tvshows/#{id}/images") do
result = self.find(id)
if result.image.nil?
result = self.load_image(result)
end
result
end
However, the image will start downloading and eventually I will get IOError - closed stream: with the following stack.
Can anyone tell me why I get this error and how I can avoid it?
IOError - closed stream:
redis-store (1.1.4) lib/redis/store/marshalling.rb:29:in `_marshal'
redis-store (1.1.4) lib/redis/store/marshalling.rb:5:in `set'
redis-activesupport (4.0.0) lib/active_support/cache/redis_store.rb:163:in `write_entry'
redis-activesupport (4.0.0) lib/active_support/cache/redis_store.rb:36:in `block in write'
activesupport (4.2.0) lib/active_support/cache.rb:547:in `block in instrument'
activesupport (4.2.0) lib/active_support/notifications.rb:166:in `instrument'
activesupport (4.2.0) lib/active_support/cache.rb:547:in `instrument'
redis-activesupport (4.0.0) lib/active_support/cache/redis_store.rb:34:in `write'
activesupport (4.2.0) lib/active_support/cache.rb:588:in `save_block_result_to_cache'
activesupport (4.2.0) lib/active_support/cache.rb:299:in `fetch'
app/models/tv_show.rb:30:in `find_images'
app/controllers/api/v1/tv_shows.rb:35:in `block (3 levels) in <class:TvShows>'
grape (0.10.1) lib/grape/endpoint.rb:47:in `block in generate_api_method'
grape (0.10.1) lib/grape/endpoint.rb:247:in `run'
grape (0.10.1) lib/grape/endpoint.rb:195:in `block in call!'
grape (0.10.1) lib/grape/middleware/base.rb:24:in `call!'
grape (0.10.1) lib/grape/middleware/base.rb:18:in `call'
grape (0.10.1) lib/grape/middleware/base.rb:24:in `call!'
grape (0.10.1) lib/grape/middleware/base.rb:18:in `call'
grape (0.10.1) lib/grape/middleware/base.rb:24:in `call!'
grape (0.10.1) lib/grape/middleware/base.rb:18:in `call'
grape (0.10.1) lib/grape/middleware/error.rb:27:in `block in call!'
grape (0.10.1) lib/grape/middleware/error.rb:26:in `call!'
grape (0.10.1) lib/grape/middleware/base.rb:18:in `call'
rack (1.6.0) lib/rack/head.rb:13:in `call'
rack (1.6.0) lib/rack/builder.rb:153:in `call'
grape (0.10.1) lib/grape/endpoint.rb:196:in `call!'
grape (0.10.1) lib/grape/endpoint.rb:184:in `call'
rack-mount (0.8.3) lib/rack/mount/route_set.rb:152:in `block in call'
rack-mount (0.8.3) lib/rack/mount/code_generation.rb:96:in `block in recognize'
rack-mount (0.8.3) lib/rack/mount/code_generation.rb:75:in `optimized_each'
rack-mount (0.8.3) lib/rack/mount/code_generation.rb:95:in `recognize'
rack-mount (0.8.3) lib/rack/mount/route_set.rb:141:in `call'
grape (0.10.1) lib/grape/api.rb:102:in `call'
grape (0.10.1) lib/grape/api.rb:33:in `call!'
grape (0.10.1) lib/grape/api.rb:29:in `call'
actionpack (4.2.0) lib/action_dispatch/routing/mapper.rb:51:in `serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.2.2) lib/omniauth/builder.rb:59:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.6.0) lib/rack/etag.rb:24:in `call'
rack (1.6.0) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.0) lib/rack/head.rb:13:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.0) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.0) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.2.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.2.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:647:in `call'
activerecord (4.2.0) lib/active_record/migration.rb:378:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
better_errors (2.1.1) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:57:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.0) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.0) lib/rack/runtime.rb:18:in `call'
rack (1.6.0) lib/rack/lock.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.0) lib/rack/sendfile.rb:113:in `call'
railties (4.2.0) lib/rails/engine.rb:518:in `call'
railties (4.2.0) lib/rails/application.rb:164:in `call'
rack (1.6.0) lib/rack/lock.rb:17:in `call'
rack (1.6.0) lib/rack/content_length.rb:15:in `call'
rack (1.6.0) lib/rack/handler/webrick.rb:89:in `service'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'
Source: (StackOverflow)
How do you search for keys with a value in Ruby? For example get all KEYS where the value is "somevalue".
My keys are
"xyz" => {:status=> "connected", :topic=> "ABC"}
"PQR" => {:status=> "connected", :topic=> "ABC"}
Now I need to find all the KEYS where topic is "ABC"
Source: (StackOverflow)
Why this code
redis.set("test", true, ex: 24.hours)
return exeption
Redis::CommandError: ERR wrong number of arguments for 'set' command
I use this gems
- redis (3.2.0)
- redis-rails (4.0.0)
Source: (StackOverflow)
I have a Redis cluster of 4 nodes, 1 master and 3 slaves, monitored by Sentinel.
Now in rails I need to connect to this cluster, reading from the nearest replica, and writing to the master, the same as I do with MongoDB.
Using the redis-rails gem, how is it possible to configure the cache_store to specify the Sentinels instead of a single node?
Source: (StackOverflow)