You can explain how an uploaded file travels from the browser to the server (a multipart form post) and where a Rails app can store it.
...and the form's enctype — how a file travels from the browser to the server 📄 MDN: Content-Disposition — inline display vs. forced download 📄 Rails Guide: Active Storage — the built-in...
Weighttp is threaded and might exhaust resources of an application better than ApacheBench or httperf. You need libev installed.
...application framework and tools for rapid development of maintainable high performance & high scalability protocol servers & clients...
We had a strange behaviour on one of our mariadb-servers: Everyday at around midnight we saw that the root-account on one of our servers is trying to access...
# journalctl -u mariadb Dec 16 00:00:03 cool-server mariadbd[788]: 2022-12-16 0:00:03 34996 [Warning] Access denied for user 'root'@'localhost' (using password...
...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...
...Gemfile, make sure to exclude these, if they should not be deployed to the servers. The gems of these groups might not be loaded by rails, however, the deployment process...
...will take longer as the gems will be downloaded and installed to the server. e.g. to exclude the groups cucumber and deploy, add the following to config/deploy/production.rb and config/deploy/staging.rb respectively...
...add the following line to your config/environments/development.rb: config.assets.compile = false config.assets.debug = false Then restart your server. This mimicks how applications work in production. Now reload your page. It will probably show...
...Ruby, and it is tailored to a certain domain. In contrast, a gem usually: serves a single purpose supports several Ruby versions supports several Rails versions cannot and should not...
...tests in Cucumber with Aruba. Github Actions Github Actions is a free continuous integration service offered by Github. It runs your test suite in the background and reports test results...
...signed and accepted) SSL certificate for mywebsite.com, forward the traffic to our actual dev server. On linux, this can be achieved with these steps (instructions for Ubuntu): Resolving mywebsite.com to...
...that certificate with "caddy" Install caddy sudo apt install caddy Disable the global caddy service sudo systemctl stop caddy.service sudo systemctl disable caddy.service Create a file named Caddyfile mywebsite.com {
...argument that will be the result of that block iteration. The following method will serve as an example in the details below: def example puts yield puts 'done' return 'example...
This is a way to run multiple redis server on one ubuntu server. These steps you have to do only once: Adjust init script Change some Variables. From this:
...ARGS=/etc/redis/redis.conf NAME=redis-server DESC=redis-server PIDFILE=/var/run/redis.pid to this: NAME=`basename ${0}` DAEMON_ARGS=/etc/redis/${NAME}.conf DESC=${NAME} PIDFILE=/var/run/${NAME}.pid Move redis configuration ^
To capture and log Sentry events locally during development without sending to the server, add this to config/initializers/sentry.rb inside the Sentry.init block: if Rails.env.development? # Use dummy transport to prevent...
...appendix below for available event attributes end DummyTransport prevents actual HTTP transmission to Sentry servers; events are captured locally but not sent background_worker_threads = 0 to disable async processing...
...response in form round trips, since the id can not be assigned by the server while it may be outputting Unpermitted parameter: :id within the console. You are not setting...
...need to pay attention if you redirect outside of Rails, e.g. via your web server configuration. Dealing with incorrectly cached redirects The only fix is to keep redirecting the user...
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...
If you are using PDFKit / wkhtmltopdf, you might as well want to use custom fonts in your stylesheets. Usually this...
...for, and why schema changes go through migrations instead of manual changes on a server. You can write migrations that change the schema and migrate existing data. You can explain...
...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?
openssl req -new -newkey rsa:2048 -sha256 -days 365 -nodes -x509 -keyout server.key -out server.crt Explanation req -new Create a new request ... -newkey ... using a new key ...
...monitored. We are experts in Linux and AWS environments, as well as self-hosted server infrastructures. Have a look at makandra operations. Trainee program and makandra curriculum In makandra cards...
...that can help both newcomers and experienced developers in web development and DevOps. It serves as practical support for anyone who wants to expand their technical skills or anyone who...
...Protokoll baut es auf, auf welchem Port läuft es? Was ist OpenSSH? Was ist ein Server-Fingerprint und wie sehen Fehler beim Abgleich aus? Was ist public key-Authentfizierung, wie...
...konfiguriert man es am Server, wie hinterlegt man öffentliche Schlüssel für Benutzer? Was ist ein Bastion- oder Jump-Host und warum verwendet man das? Wie funktionieren scp und rsync?
...for the given locale. Note that Hyphenopoly is primarily a NodeJS module and targeted at server-side hyphenation, but it can be configured for the client-side as well.
...seen cases in production where such queries consume GBs of memory bringing down our servers. The solution Just use .preload instead. Rails will use separate queries to preload the data...
You might use screen or tmux to run a temporary command on a server which continues to run after the SSH session is closed. Consider systemd-run as alternative. It...
...will turn every command in a systemd service unit: # Run `openssl speed` as unit run-benchmark.service $ sudo systemd-run --unit=run-benchmark openssl speed # Query the current status $ systemctl status run-benchmark.service...
...font files, even unneeded ones, but that consumes only disk space on your application servers. Updating to the latest version of a font is trivial. Yes, fonts are updated, occasionally...