HelioCampos

Database migration best practices for Rails

Never ever change data on schema changes! [1]

Use rake tasks to change the data! [1]

This decouples a deployment from completed migrations. Give us control of the data manipulation proccess by encapsulatin it in on place. need to remember to:

1. Run it in one of the ways bellow: a. Add this rake task the deployment script or;

ptarjan

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

gbuesing

UPDATE a fork of this gist has been used as a starting point for a community-maintained "awesome" list: machine-learning-with-ruby Please look here for the most up-to-date info!

Resources for Machine Learning in Ruby

Gems

• liblinear-ruby: Ruby interface to LIBLINEAR using SWIG

t32k

foobar, foo, bar, baz, qux, quux, corge, grault, garply, waldo, fred, plugh, xyzzy, thud

• ASCII.jp：技術文書に頻出する「foobar」って何だ？｜今さら聞けないIT英語

bds

git push origin master && git push heroku master && newrelic deployments

ryanb

Railties 3.1 RC4

• The new rake task assets:clean removes precompiled assets. [fxn]

• Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]

• Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav]

• Template generation for jdbcpostgresql #jruby [Vishnu Atrai]