Add the following gems to your Gemfile
:
gem 'activeresource'
gem 'newrelic_api'
Update your bundle:
A Dashing widget for displaying the number of visitors to your website over a specified timeframe, as reported by Google Analytics
One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.
Most workflows make the following compromises:
Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure
flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.
Use production SSL certificates locally. This is annoying
# This is a snippet to add to middleman's config.ru file if you want to add basic auth to your middleman app on heroku | |
# NOTE: you need to stick this above the build script like shown below | |
use Rack::Auth::Basic, "Restricted Area" do |username, password| | |
[username, password] == ['username', 'password'] | |
end | |
# This part below is just what builds the static site. you only need to add lines 4 - 6 above any build command like shown below. | |
use Rack::TryStatic, :root => "build", :urls => %w[/], :try => ['.html', 'index.html', '/index.html'] |
Producer | |
Setup | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1 | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3 | |
Single thread, no replication | |
bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196 |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
# | |
# A: | |
# pubsub = PgPubSub.new('channelname') | |
# pubsub.subscribe do |data| | |
# puts "data: #{data} is coming!" | |
# end | |
# | |
# B: | |
# pubsub = PgPubSub.new('channelname') | |
# pubsub.publish("hello world") |