When requests arrive at the application servers simultaneously, weird things can happen. Sometimes, this can also happen if a user double-clicks on a button, for example. This often leads...
...Warum nicht dem Browser verbieten gefährliche Dinge zu tun, z.B. Inline-Skripte auszuführen? Funktionsweise Server setzt einen HTTP-Header, der detailliert beschreibt, welche (potentiell gefährlichen Dinge) die Webseite tun darf...
...z.B. Analytics-Snippet o.ä.), kann man den nonce-Mechanismus verwenden. Dazu generiert der Server für jeden Request einen zufälligen Wert (eine "Nonce"), und schreibt ihn in Header und an...
...img tag in favor of lazy-loading, make sure you have a strategy to serve crawlers, if you need to support them. When the lazy-loaded image is inserted into...
...Session Management Ohne (9.4) JSON Web Tokens (10) Federation / Single-Sign on (11) Serverseitige Angriffe (12) Clientseitige Angriffe (13) Clientseitige Schutzmaßnahmen Read through the most known security issues in web...
...HTML code injection Boot up a second Rails application on another port (e.g. rails server -p 4000 to boot it on http://localhost:4000). Assume this is a second domain...
...on productivity. Advantages No added effort: tests need to be written anyway. Test heads serve as todo lists. You'll always know what is finished and what is left to...
...this use case, any good network-client gem like the http or httpclient gems serve us just well most of the time. The examples below use the http gem ("http.rb...
...ms, then animate) When you wait for I/O most of the time (web servers, crawlers) Most current and future HTML5 browser APIs have async signatures. Async frontend example
...clients, we want to review all code written before it goes to the staging server. Note: This process is tailored to our specific needs and tools at makandra. While it...
...Rails: How to write custom email interceptors Check if you have a local mail server listening Ensure that e-mail arrives at the inbox without being blocked
...work with other Linux distros, as long as you are using the Xorg display server. It likely won't work on Wayland. The script assumes that external display order is...
...passenger worker. Please update the card accordingly if you solve that issue. If your server is running passenger enterprise, rather use that tool to inspect your process.
...and application logos next to the dynamically created images versions of uploaded files. To serve all of those with limited bandwidth and high quality, images formats and compression strategies have...
Um Server Infrastrukturen schnell und reproduzierbar konfigurieren zu können setzt man auf so genannte Configuration Management Lösungen. Die bekanntesten sind Puppet, Chef, Salstack und Ansible. Dabei hat Ansible den größten...
...the PDF additional assets (CSS, images, Javascripts) are required When using a singlethreaded development server like Thin there is no additional worker process available to deliver those assets.
...set config.allow_concurrency = true (default in Rails 4) Note that this allows concurrent requests served from the same process using threads. This might cause unexpected behavior if your application or...
...or the ENV variable RUBY_YJIT_ENABLE=1 for starting Rails processes on your server...
...as enumerable) and the using methods iterated over them. As the using methods like serve do not actually need all routes, but may return early, a change has been introduced...
defined by ActionDispatch::ExceptionWrapper.rescue_responses. In the event of an unexpected internal server error, the exception that caused the error will still be raised within the test so...
...of the Content-Type: HTTP header or the equivalent in the protocol used to serve the style sheet. The @charset CSS at-rule. Sprockets The asset pipeline (with Sprockets) does...
...IDENTIFIED BY 'some_password'; GRANT REPLICATION SLAVE ON *.* TO 'replicator'@'%'; Adjust MySQL configuration : Edit /etc/mysql/my.cnf: server-id = 1 log_bin = /var/log/mysql/mysql-bin.log replicate-do-db = some_project_production replicate-do-db...
...other_project_production replicate-ignore-db = mysql server-id needs to be unique among all connected master and slave servers. When replicate-do-db is provided only the chosen databases...
...Basically a comprehensive Rails Template. Prepares your development environment and lets you select web server, template engine, unit and integration testing frameworks and more. Generate an app in minutes using...
...following setup allows you to start Terminator in a split view with the Rails server running in the left pane and all remaining processes running via foreman in the right...
type = Terminal parent = child1 profile = default command = env startup_cmd="bundle exec rails server" startup_attrs="-p 3000" bash [[[terminal3]]] type = Terminal parent = child1 profile = default command = 'env startup...
...you to log to multiple sinks. You know this behavior from from the rails server command, that both logs to standard out and the log/development.log file. Here is an example...
...ActiveSupport::BroadcastLogger.new(stdout_logger, file_logger) broadcast.level = Logger::INFO config.logger = broadcast end end Sidekiq.configure_server do |config| if ENV['RAILS_ENV'] == 'development' || ENV['RAILS_ENV'] == 'test' stdout_logger = ActiveSupport::Logger.new...
...stricter settings than the more liberal MariaDB. If your app explodes after changing SQL servers, you might be able to fix it by setting the SQL mode to the value...
...in your previous server version. Important SQL mode flags These SQL modes will probably give you the most headaches: STRICT_TRANS_TABLES, STRICT_ALL_TABLES Introduced in MySQL 5.7, these...
...Discuss with your mentor Instead of migrations, could we simply log into the production server's SQL console and alter tables there whenever we need a change?