Azure Webjobs to the rescue

In this presentation we demo the options of using Azure Webjobs to offload computation intensive work from your website to background queues.

Transcript

1. AZURE WEBJOBS TO THE RESCUE @markvanstraten
2. AZURE WEB JOBS ARE SCHEDULED TASKS ON STEROIDS
3. RUN WHATEVER FLOATS YOUR BOAT .JS .PY .PHP .EXE .BAT . EXE .SH .CMD
4. C# WEBJOBS SDK = ♥
5. Azure Storage Queue Your web app var queueClient = Settings.GetWebjobStorageAccount.CreateCloudQueueClient(); var queue = queueClient.GetQueueReference("sendEmailQueue"); queue.CreateIfNotExists(); await queue.AddMessageAsync(new CloudQueueMessage(JsonConvert.SerializeObject (new SendEmailQueueMessage { EmailTemplate = "succes", OrderId = 1234, Language = "nl" })));
6. QUEUES CONTAIN JSON
7. Azure Storage Queue Your Web Job private static void Main() { new JobHost().RunAndBlock(); } public async static Task SendEmail([QueueTrigger("sendEmailQueue")] SendEmailQueueMessage message, TextWriter logger) { logger.Write("Going to send email for order " + message.OrderId); }
8. AFTER FIVE RETRIES JOB IS PLACED IN POISON QUEUE
9. POISON QUEUE private static void Main() { new JobHost().RunAndBlock(); } public async static Task ProcessSendEmailPoisonMessage([QueueTrigger ("sendEmailQueue-poison")] SendEmailQueueMessage message, TextWriter logger) { logger.Write("Failed sending email for order " + message.OrderId); } Azure Storage Poison Queue Your Web Job
10. EASY DEVOPS ON QUEUES
12. FREE DASHBOARD
13. https://{mysite}.scm.azurewebsites.net/azurejobs
14. FTP MSDEPLOY
15. GOTCHAS
16. SITE OFF = WEBJOB OFF
17. ALL SLOTS
18. Solution: suffix queue names with app-version to let swapped old version deplete its own queue. sendemails-1.2.3 → sendemails-1.2.4 Con: Manual old queues cleanup after a few deploys
19. FURTHER READING http://azure.microsoft.com/en- us/documentation/articles/websites-dotnet-webjobs- sdk-get-started/ http://www.troyhunt.com/2015/01/azure-webjobs- are-awesome-and-you.html