marwei

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

1. List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

2. Reset the consumer offset for a topic (preview)

Faheetah

node {
    echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
    echo 'No quotes, pipeline command in single quotes'
    sh 'echo $BUILD_NUMBER' // 1
    echo 'Double quotes are silently dropped'
    sh 'echo "$BUILD_NUMBER"' // 1
    echo 'Even escaped with a single backslash they are dropped'
    sh 'echo \"$BUILD_NUMBER\"' // 1
    echo 'Using two backslashes, the quotes are preserved'
    sh 'echo \\"$BUILD_NUMBER\\"' // "1"

defndaines

; Inspired by https://twitter.com/gigasquid/status/530699466891067392 ...
; An implementation of the Fizz Buzz Kata with no conditionals.
(defn fb-gen
  [step value]
  (into (sorted-map) (zipmap (range step 101 step) (repeat value))))

(def nums (into (sorted-map) (zipmap (range 1 101) (range 1 101))))
(def threes (fb-gen 3 "fizz"))
(def fives (fb-gen 5 "buzz"))
(def fifteens (fb-gen 15 "fizzbuzz"))

kenn

Unicorn memory usage improvement with Ruby 2.0.0

Here's a preliminary experiment to see how much memory is saved with the new copy-on-write friendly (bitmap marking) GC.

Calculated by memstats.rb https://gist.github.com/kenn/5105061 on Debian x86_64.

Master process:

# ./memstats.rb 20547

dariocravero

Create a Meteor app and put the client_/server_ files in a client/server directories. Also, create a public dir to save the uploaded files.

fnichol

A Common .ruby-version File For Ruby Projects

Background

I've been using this technique in most of my Ruby projects lately where Ruby versions are required:

• Create .rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far...
• Create .rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).

Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.

olivierlacan

# switch default editor for pry to sublime text
Pry.config.editor = "sublime"

# format prompt to be <Rails version>@<ruby version>(<object>)>
Pry.config.prompt = proc do |obj, level, _|
  prompt = "\e[1;30m"
  prompt << "#{Rails.version} @ " if defined?(Rails)
  prompt << "#{RUBY_VERSION}"
  "#{prompt} (#{obj})>\e[0m"
end