CODEWITHSUNDEEP
ruby-on-railsdelayed-job
maxiperez
maxiperez

Reputation: 1480

How to run n jobs each x time with delayed job gem?

My question is how could run x quantities of jobs each n seconds with delayed job gem?

Example

I want send massive newsletter. However when I send #50 ("example") mail, GMail doesn´t send the emails (SPAM) however its contents is a bit different.

So if I send the newsletter by groups of twenty user each 3 minutes perhaps GMail will send the emails correctly.

Thanks in advance

Upvotes: 1

Views: 259

Answers (2)

Ken Fromm
Ken Fromm

Reputation: 91

You can do this type of thing with SimpleWorker, a cloud-based scheduling and background processing service. It offers DelayedJob-like capabilities but without having to manage servers and queues. (I work at Iron.io, makers of SimpleWorker).

You can schedule a job to run every X seconds or schedule multiple jobs to come onto queue at specific times (different priorities have different target run windows). Rather than pre-schedule a lot of jobs though, you'll probably want to have one or more master jobs that run on regular schedules and then queue up one or more slave jobs to send the actual emails (each checking the database to pick up the next set to send).

You can do use the same approach when facing thresholds with fetching data via APIs. Happy to discuss further if you'd like.

Ken

Upvotes: 1

rubish
rubish

Reputation: 10907

delayed_job has an option :run_at(https://github.com/collectiveidea/delayed_job), you can use that to set at what time the job should run. It doesn't guarantee if job would run at that time, but it would surely not run before that.

So, 20 mails/3 minutes = 1 email/9 seconds.

You can do somethings like this:

now = Time.now
count = 0
# then for each newsletter schedule it at intervals of 9 secs
users.each do |u|
  WhateverMailer.delay(:run_at => now + count*9).news_letter(u)
  count += 1
end

Upvotes: 4

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