SSL/TLS - Typical problems and how to debug them
The linked article provides a description of commonly found problems with TLS and hints on debugging / solving them.
Related cards:
The top responsive web design problems ... and how to avoid them
I recently created a survey asking fellow designers about the problems they faced when creating fully responsive sites. This article will list the most common problems they reported and offer possible solutions, along with suggestions to conside...
How to: Use git bisect to find bugs and regressions
Git allows you to do a binary search across commits to hunt down the commit that introduced a bug.
Given you are currently on your branch's HEAD that is not working as expected, an example workflow could be:
git bisect start # Start bisectin...
Invoices: How to properly round and calculate totals
While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....
Customize tokenization of the MySQL FULLTEXT parser
The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.
Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...
Ruby and Rails deprecation warnings and how to fix them
Add deprecation warnings and their solution or link to available solutions.
Global access to Rake DSL methods is deprecated. Please include Rake::DSL into classes and modules which use the Rake DSL methods.
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When sessions, cookies and Clearance tokens expire and how to change it
Expiration of Rails sessions
By default Rails sessions expire when the user closes her browser window.
To change this edit your config/initializers/session_store.rb like this:
ActionController::Base.session = ...
Firefox: Inspecting mixed content warnings (and how to enable them)
Having your site run on SSL is worthless when you include content over an unsafe connection (HTTP).
Here is how to hunt down mixed content with Firefox.
How to enable mixed content alerts
If your Firefox does not warn you about mixed content ...
How to make Rational#to_s return strings without denominator 1 again
The way Rational#to_s works on Ruby has changed from Ruby 1.9 on. Here is how to get the old behavior back.
You may want this for things where Rationals are being used, like when subtracting Date objects from one another.
What's happening?...
How to debug issues with zeitwerk and Rails
In case you have trouble with the zeitwerk autoloader, you can check out the documentation Autoloading and Reloading Constants and [Classic to Zeitwerk HOWTO](https://guide...
How to fix "Too many authentic authentication failures" with SSH and/or Capistrano
You are getting when connecting via SSH or deploying with Capistrano (which uses SSH):
Too many authentication failures for username
This is caused by having too many SSH keys added to your keyring or ssh-agent. Your ssh-agent will throw all...