Example of the usage of the non thread-safe aws-s3 gem.

upload_file.rb

def upload

  # ...

  AWS::S3::Base.establish_connection!(
    :access_key_id => aws_access_key_id,
    :secret_access_key => aws_secret_access_key
  )
  
  File.open(file_path) do |file|
    AWS::S3::S3Object.store(filename, file, bucket_name)
  end
end