Request limit of graph.facebook.com
The facebook API allows up to 600 requests per 600 seconds.
If you poll more often, you'll get no or malformed answers.
Related cards:
GoRuCo 2010 - James Golick - Scaling to Hundreds of Millions of Requests on Vimeo
Physical servers worked, EC2 did not.
RSpec: How to test the content of a flash message in a request spec
The ActionDispatch module of Rails gives you the helper method flash to access the flash messages in a response.
describe PostsController, type: :request do
descr...
Controller specs do not persist the Rails session across requests of the same spec
In specs, the session never persists but is always a new object for each request. Data put into the session in a previous request is lost. Here is how to circumvent that.
What's going on?
You are making ActionController::TestRequests in your...
Five years of "Today I Learned" from Josh Branchaud
The linked GitHub repository is a bit like our "dev" cards deck, but groomed from a single person (Josh Branchaud). It includes an extensive list of over 900 TILs on many topics that might be interesting for most of us. (e.g. Ruby, Rails, Git, Uni...
How to change the hostname in Cucumber features
Capybara uses www.example.com as the default hostname when making requests.
If your application does something specific on certain hostnames and you want to test this in a feature, you need to tell Capybara to assume a different host.
Given...
ApacheBench may return "Failed requests" for successful requests
When you use ab to do some performance benchmarking, you might run into output like this:
Complete requests: 200
Failed requests: 5
(Connect: 0, Receive: 0, Length: 5, Exceptions: 0)
Note that in our example these "Faile...
Limiting CPU and memory resources of Paperclip convert jobs
If you're using Paperclip to store and convert images attached to your models, processing a lot of images will probably cause headache for your system operation colleagues because CPU and/or memory peaking.
If you're on Unix you can use nice ...
Scaling Pinterest - From 0 to 10s of Billions of Page Views a Month in Two Years
Awesome battle report from Pinterest trying to scale their setup using different approaches.
When you push something to the limit all technologies fail in their own special way. This lead them to evaluate tool choices with a preference for tool...
Caching in Rails < 6.1 may down parts of your application when using public cache control
TL;DR When using Cache-Control on a Rails application, make sure the Vary: Accept header is set.
Proxy caching is a good feature to serve your publicly visible application content faster and reduce load on your servers. It is e.g. availab...
Before you make a merge request: Checklist for common mistakes
Merge requests are often rejected for similar reasons.
To avoid this, before you send a merge request, please confirm that your code ...
- [has been reviewed by yourself beforehand](https://makandracards.com/makandra/491161-how-to-make-your-code...