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POefficient bulk update rails database
 

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    <p>I'm trying to build a rake utility that will update my database every so often.</p> <p>This is the code I have so far:</p> <pre><code>namespace :utils do # utils:update_ip # Downloads the file frim &lt;url&gt; to the temp folder then unzips it in &lt;file_path&gt; # Then updates the database. desc "Update ip-to-country database" task :update_ip =&gt; :environment do require 'open-uri' require 'zip/zipfilesystem' require 'csv' file_name = "ip-to-country.csv" file_path = "#{RAILS_ROOT}/db/" + file_name url = 'http://ip-to-country.webhosting.info/downloads/ip-to-country.csv.zip' #check last time we updated the database. mod_time = '' mod_time = File.new(file_path).mtime.httpdate if File.exists? file_path begin puts 'Downloading update...' #send conditional GET to server zipped_file = open(url, {'If-Modified-Since' =&gt; mod_time}) rescue OpenURI::HTTPError =&gt; the_error if the_error.io.status[0] == '304' puts 'Nothing to update.' else puts 'HTTPError: ' + the_error.message end else # file was downloaded without error. Rails.logger.info 'ip-to-coutry: Remote database was last updated: ' + zipped_file.meta['last-modified'] delay = Time.now - zipped_file.last_modified Rails.logger.info "ip-to-country: Database was outdated for: #{delay} seconds (#{delay / 60 / 60 / 24 } days)" puts 'Unzipping...' File.delete(file_path) if File.exists? file_path Zip::ZipFile.open(zipped_file.path) do |zipfile| zipfile.extract(file_name, file_path) end Iptocs.delete_all puts "Importing new database..." # TODO: way, way too heavy find a better solution. CSV.open(file_path, 'r') do |row| ip = Iptocs.new( :ip_from =&gt; row.shift, :ip_to =&gt; row.shift, :country_code2 =&gt; row.shift, :country_code3 =&gt; row.shift, :country_name =&gt; row.shift) ip.save end #CSV puts "Complete." end #begin-resuce end #task end #namespace </code></pre> <p>The problem I'm having is that this takes a few minutes to enter the 100 thousand plus entries. I'd like to find a more efficient way of updating my database. Ideally this will remain independent of the database type, but if not my production server will be running on MySQL.</p> <p>Thank you for any insight.</p>
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