Deploy Rails to Render With Sidekiq, Redis and PG

production.rb

# conig/puma/production.rb

# Puma can serve each request in a thread from an internal thread pool.
# The `threads` method setting takes two numbers: a minimum and maximum.
# Any libraries that use thread pools should be configured to match
# the maximum value specified for Puma. Default is set to 5 threads for minimum
# and maximum; this matches the default thread size of Active Record.
#
max_threads_count = ENV.fetch("RAILS_MAX_THREADS", 5)
min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count }
threads min_threads_count, max_threads_count

# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
#
port ENV.fetch("PORT", 3000)

# Specifies the `environment` that Puma will run in.
#
environment ENV.fetch("RAILS_ENV") { "development" }

# Specifies the `pidfile` that Puma will use.
pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" }

# Specifies the number of `workers` to boot in clustered mode.
# Workers are forked web server processes. If using threads and workers together
# the concurrency of the application would be max `threads` * `workers`.
# Workers do not work on JRuby or Windows (both of which do not support
# processes).
#
workers ENV.fetch("WEB_CONCURRENCY", 4)
# Use the `preload_app!` method when specifying a `workers` number.
# This directive tells Puma to first boot the application and load code
# before forking the application. This takes advantage of Copy On Write
# process behavior so workers use less memory.
#
preload_app!
# Allow puma to be restarted by `rails restart` command.
plugin :tmp_restart

render.yml

databases:
  - name: railshackathon
    databaseName: railshackathon_prod
    user: railshackathon
    region: ohio

services:
  - type: redis
    name: sidekiq-redis
    region: ohio
    maxmemoryPolicy: noeviction
    ipAllowList: [] # only allow internal connections

  - type: worker
    name: sidekiq-worker
    env: ruby
    region: ohio
    buildCommand: bundle install
    startCommand: bundle exec sidekiq -q default -q mailers
    envVars:
      - key: DATABASE_URL
        fromDatabase:
          name: railshackathon
          property: connectionString
      - key: REDIS_URL
        fromService:
          type: redis
          name: sidekiq-redis
          property: connectionString
      - key: RAILS_MASTER_KEY
        sync: false
  - type: web
    name: rails-web
    env: ruby
    region: ohio
    buildCommand: bundle install; bundle exec rake assets:precompile; bundle exec rake assets:clean; bundle exec rake db:migrate;
    startCommand: bundle exec puma -C config/puma/production.rb
    envVars:
      - key: DATABASE_URL
        fromDatabase:
          name: railshackathon
          property: connectionString
      - key: REDIS_URL
        fromService:
          type: redis
          name: sidekiq-redis
          property: connectionString
      - key: RAILS_MASTER_KEY
        sync: false