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Show HN: Posthook – Job Scheduling as a Service

posthook.io

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Re: Show HN: Posthook – Job Scheduling as a Service

#67

Post by PretzelFisch »

mcintyre1994 wrote: post #13
cgenuity wrote: post #2

Hello all! I built Posthook as a simple solution for web applications to schedule one-off tasks. It lets you schedule a request back to your application for a certain time, with an optional JSON payload. It can be an alternative to running your own systems like Sidekiq, Celery, or Quartz and the operational overhead that comes along with them. Cron jobs and cloud provider tools like CloudWatch Events are also used fo…

Neat! We've been doing something like this at work, and another simple solution (curious if your Google cloud infrastructure is built on something similar) is Azure Service Bus queues with a function app trigger. Unlike AWS SQS, Azure SB queues can have items scheduled to be queued at an arbitrary time, see https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.... . SQS can only delay up to 15 minutes, so you h…

Aws just announced "ECS Daemon Scheduling" https://aws.amazon.com/about-aws/whats-new/2018/06/amazon-ec... It sounds promising.

Re: Show HN: Posthook – Job Scheduling as a Service

#68

Post by navinsylvester »

cgenuity wrote: post #19
mcintyre1994 wrote: post #13

Earlier quoted context omitted.

Neat! We've been doing something like this at work, and another simple solution (curious if your Google cloud infrastructure is built on something similar) is Azure Service Bus queues with a function app trigger. Unlike AWS SQS, Azure SB queues can have items scheduled to be queued at an arbitrary time, see https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.... . SQS can only delay up to 15 minutes, so you h…

Thanks! I do heavily use Google Cloud Pub/Sub but it does not support scheduling items so I only schedule items when they are due for processing.

Wouldn't it be good to have your own pub/sub mechanism instead of relying on a third party like gce for a critical component. Take for example - https://github.com/grpc/grpc/issues/13327. It took them fair amount of time to fix that issue.

Re: Show HN: Posthook – Job Scheduling as a Service

#69

Post by dosy »

nodesocket wrote: post #6
cgenuity wrote: post #2

Hello all! I built Posthook as a simple solution for web applications to schedule one-off tasks. It lets you schedule a request back to your application for a certain time, with an optional JSON payload. It can be an alternative to running your own systems like Sidekiq, Celery, or Quartz and the operational overhead that comes along with them. Cron jobs and cloud provider tools like CloudWatch Events are also used fo…

Does Posthook support recurring scheduling (i.e. every 15 minutes)? Also, is there retry logic? I.E. 3 retries, delay 60 seconds between retries?

I just posted a scalable service that does support recurring scheduling ( every 15 minutes, as fast as every second, or long as every n months ). Show HN here: https://news.ycombinator.com/item?id=17353486

Re: Show HN: Posthook – Job Scheduling as a Service

#70

Post by dosy »

Cieplak wrote: post #34

This is definitely a needed service. As a business, if something isn't core to the business model, it's better to pay money and avoid distractions, at least until it's clear that something is actually core to the business. That said, I've wanted something akin to a distributed cron, without the complexities of workflow engines like airflow or azkaban, so I started writing a little HTTP API for scheduling jobs [1], wh…

Hey. I just made this. It's a coincidence that the OP and me are building it at the same time, but AFAICT the OP service does not support recurring tasks, but Pocketwatch does. Per your example, try:

   curl https://api.pocketwatch.xyz/v1/timer/new \
   -H "Content-type: application/json" \
   -d '{ "apiKey"             : "i_am_hn_and_proud" 
       , "url"                : "https://host.tld/?my_param=my_val" 
       , "method"             : "POST"
       , "interval_unit_type" : "second" 
       , "interval_unit_count": 1 
       , "duration_unit_type" : "minute" 
       , "duration_unit_count": 6 }'
You can use curl but the Node.js client library[1] is probably easier. I've made a free demo API key for HN readers that should be enough to let everyone try it out a bit[2].

[1] https://www.npmjs.com/package/%40dosy%2Fpocketwatch [2] https://news.ycombinator.com/item?id=17353486

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