19 May 2013

The Ruby Reflector

Topic

Redis

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The Sidekiq Pro Giveaway Winner!

By Mike Perham of Mike Perham 8 days ago.
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BJzXcEFCcAE-8a2

…and every one has 4 processes which every one has 25 workers. As we are all on EC2, we use spot instances for part of the cluster so we can add more workers as needed, so it could grow up from 400 to 800 or more.

The technology is nothing special but solid, Rails + Redis + Sharded MySQL.

Thanks Libin and everyone else who entered. I hope Sidekiq Pro makes your system even better!

mikeperham.com Read
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Writing a good README

By Jordan Maguire of Transcending Frontiers 13 days ago.
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…project you have to install new Rubies and bundle - plus you might need to install Redis, Solr or jam your public key on a server somewhere. Even worse, after bundling you notice this is a Rails 2.3 project not a Rails 3.2 and you haven't worked with Rails 2.3 for years and can't remember how to start a server.

Then you have to work out who is in charge of this damn project and bug them to find out why your PostgreSQL is complaining about some " PostGIS" thing …

thefrontiergroup.com.au Read
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Rounded Corners 426 — The Big O

By Assaf of Labnotes 14 days ago.
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…around it.

Related, the Big O cheatsheet .

§ Lisa Williams :

A scientific attitude toward one's pursuits is a great comfort: "It doesn't work" is a perfectly good experimental result.

§ Alastair Coote :

The new http://m.nytimes.com runs on Node, uses Coffeescript, LESS, and Redis for caching. How many hipster hacker points do we get?

blog.labnotes.org Read
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Dealing with Stuck Workers

By Mike Perham of Mike Perham 16 days ago.
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…Redis. When a Worker starts processing a job, it adds a status entry to Redis. When the job is complete, the worker removes its entry from Redis. If you see one or more entries linger for much longer, there's two possibilities:

The worker thread has locked up or is blocked by some other issue

The Sidekiq process crashed

Log into the host noted in the list and look for the process with the PID. If the PID exists, the job is probably locked up somehow. Send the TTIN signal …

mikeperham.com Read
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TWG seeks talented Web Developer to join the growing team

By Lee of Blog | The Working Group 18 days ago.
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Experience with additional database platforms such as Postgres, Redis and Mongo in a live production environment

Able to work in a * nix/ Linux environment

Use source control exclusively, Git preferably

Use ftp to deploy applications

Experience programming iOS, Android or BlackBerry applications

Write tests with UnitTest, RSpec or some other test-driven framework

Additional Desirable Business Competencies

Comfortable working with business model canvases such as …

blog.twg.ca Read
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Redis partial word match -- you (auto)complete me

On giant robots smashing into other giant robots 24 days ago.
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View the indexed ids using Redis smembers command: $ redis-cli smembers index:ba:movies 1) "1" 2) "2" 3) "3"

$ redis-cli smembers index:bat:movies 1) "2"

Note: The keys for the movie titles have been parameterized (lowercase and spaces replaced with dashes).

We'll use a Ruby class Autocomplete to wrap the Redis calls: # autocomplete.rb require 'redis'

class Autocomplete def initialize(partial_word) @partial_word …

robots.thoughtbot.com Read
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Double Shot #1111

By Mike Gunderloy of A Fresh Cup 1 month ago.
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jQuery 2.0 Released - Make sure you read about the supported browser changes before you switch.

Let Nunes Do It - Easily extend and consume Rails instrumentation.

Coffee-Rails - First piece of Rails 4.0 to put out a non-beta 4.0.0 version, I think.

Amanda - Blog entine that yets you write in Markdown, save on Dropbox, and store in Redis.

afreshcup.com Read
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Scaling Pinterest - From 0 to 10s of Billions of Page Views a Month in Two Years

By Todd Hoff of High Scalability 1 month ago.
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Pinterest has been riding an exponential growth curve, doubling every month and half. They've gone from 0 to 10s of billions of page views a month in two years, from 2 founders and one engineer to over 40 engineers, from one little MySQL server to 180 Web Engines, 240 API Engines, 88 MySQL DBs (cc2.8xlarge) + 1 slave each, 110 Redis Instances, and 200 Memcache Instances.

Stunning growth. So what's Pinterest's story? To tell their story we have our bards, Pinterest…

highscalability.com Read
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Rounded Corners 417 — A student of how things fall apart

By Assaf of Labnotes 1 month ago.
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…relationships in data . Supports PostgreSQL, MySQL, SQLite, Redis, and MongoDB out-of-the-box.

§ Times Haiku, a collection of Haiku found in The New York Times . Love this one :

As an engineer,

I'm sort of a student of

how things fall apart.

§ Eric Bogs :

If Tetris has taught me anything, it is that errors pile up and accomplishments disappear.

§ Rich Rogers :

"A good programmer is someone who looks both …

blog.labnotes.org Read
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MySQL 5.6 - InnoDB Memcached Plugin as a caching layer

By Mike Benshoof of MySQL Performance Blog 1 month ago.
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Now, there are definitely other NoSQL options for persistent cache out there ( Redis, Couchbase, etc) , but they are outside the scope of this investigation and would require different client libraries and benchmark methodology.

My goal here was to compare a transparent switch (in terms of code) and experiment with the memcache plugin. Even the use of HandlerSocket would require coding changes (which is why it was also left out of the discussion).

The post MySQL 5.6 - InnoDB Memcached Plugin…

mysqlperformanceblog.com Read