Changelog

3.0.0 – 2011-12-30

New: Named queues
New: Job/Worker lifecycle callbacks
Change: Active Record backend support is provided by a separate gem
Change: Enqueue hook is called before jobs are saved so that they may be modified
Fix problem deserializing models that use a custom primary key column
Fix deserializing AR models when the object isn’t in the default scope
Fix hooks not getting called when delay_jobs is false

Working around issues when psych is loaded, fixes issues with bundler 1.0.10 and Rails 3.0.4
Added p/-prefix option to help differentiate multiple delayed job workers on the same host.

Remove contention between multiple workers by performing an update to lock a job before fetching it
Job payloads may implement #max_attempts to control how many times it should be retried
Fix for loading ActionMailer extension
Added ‘delayed_job_server_role’ Capistrano variable to allow delayed_job to run on its own worker server
set :delayed_job_server_role, :worker
Fix `rake jobs:work` so it outputs to the console

Added enqueue, before, after, success, error, and failure. See the README
Remove Merb support
Remove all non Active Record backends into separate gems. See https://github.com/collectiveidea/delayed_job/wiki/Backends
remove rails 2 support. delayed_job 2.1 will only support Rails 3
New pure-YAML serialization
Added Rails 3 railtie and generator
Changed @@sleep_delay to self.class.sleep_delay to be consistent with other class variable usage
Added —sleep-delay command line option

Fix issue where dirty tracking prevented job from being properly unlocked
Add delayed_job_args variable for Capistrano recipe to allow configuration of started workers (e.g. “-n 2 —max-priority 10”)
Added options to handle_asynchronously
Added Delayed::Worker.default_priority
Allow private methods to be delayed
Fixes for Ruby 1.9
Added -m command line option to start a monitor process
normalize logging in worker
Deprecate #send_later and #send_at in favor of new #delay method

Added #delay to Object that allows you to delay any method and pass options:

options = {:priority => 19, :run_at => 5.minutes.from_now}

UserMailer.delay(options).deliver_confirmation(@user)

Fixes to Mongo Mapper backend [ 14be7a24, dafd5f46, 54d40913 ]
DataMapper backend performance improvements [ 93833cce, e9b1573e, 37a16d11, 803f2bfa ]
Fixed Delayed::Command to create tmp/pids directory [ 8ec8ca41 ]
Railtie to perform Rails 3 initialization [ 3e0fc41f ]
Added on_permanent_failure hook [ d2f14cd6 ]

Multiple backend support (See README for more details)
Added MongoMapper backend [zbelzer, moneypools]
Added DataMapper backend [lpetre]
Reverse priority so the jobs table can be indexed. Lower numbers have higher priority. The default priority is 0, so increase it for jobs that are not important.
Move most of the heavy lifting from Job to Worker (#work_off, #reschedule, #run, #min_priority, #max_priority, #max_run_time, #max_attempts, #worker_name) [albus522]
Remove EvaledJob. Implement your own if you need this functionality.
Only use Time.zone if it is set. Closes #20
Fix for last_error recording when destroy_failed_jobs = false, max_attempts = 1
Implemented worker name_prefix to maintain dynamic nature of pid detection
Some Rails 3 compatibility fixes [fredwu]

Set auto_flushing=true on Rails logger to fix logging in production
Fix error message when trying to send_later on a method that doesn’t exist
Don’t use rails_env in capistrano if it’s not set. closes #22
Delayed job should append to delayed_job.log not overwrite
Version bump to 1.8.5
fixing Time.now to be Time.zone.now if set to honor the app set local TimeZone
Replaced Worker::SLEEP, Job::MAX_ATTEMPTS, and Job::MAX_RUN_TIME with class methods that can be overridden.