How making two asynchronous tasks from a single request?

nithinmohan94 · 2016-05-10T03:11:55+00:00

Oau, great answer! Thank you very much! I will check and see what is the best way to proceed. Bogdan Aapo Talvensaari wrote: On Wednesday, 18 May...

How making two asynchronous tasks from a single request?

nithinmohan94

I am working on a issue with the design of a service which is basically redirection.

The request link I get will contain some params (abc.com/param1=v1&param2=v2). I need to do two tasks on this link

I need to format the link and redirect user to another domain with some params passed(xyz.com/p1=v2) depending on the value of ,say, param1, This step should be as fast as possible
I need to save the link details to my DB after some processing.

I am planning to do this with nginx+lua(openresty)+(Redis or Mongodb?) combination.

As the two are unrelated task I am planning to split it, to do both asynchronously.

As the first task in a redirection, ngx.redirect("/link") seems apt for the case. But the documentation says redirect call will terminates the processing of the current request

How can I make these two tasks independent and redirection will happen as fast a possible and should not wait for the completion of the second task?

Thanks for any help

rpaprocki

Sounds like light threads might be a good solution here?

https://github.com/openresty/lua-nginx-module#ngxthreadspawn
https://github.com/openresty/lua-nginx-module#ngxthreadwait
https://github.com/openresty/lua-nginx-module#ngxthreadkill

On Mon, May 9, 2016 at 12:11 PM, Nithin Mohan <nithin...@gmail.com> wrote:

I am working on a issue with the design of a service which is basically redirection.
The request link I get will contain some params (abc.com/param1=v1&param2=v2). I need to do two tasks on this link
I need to format the link and redirect user to another domain with some params passed(xyz.com/p1=v2) depending on the value of ,say, param1, This step should be as fast as possible
I need to save the link details to my DB after some processing.
I am planning to do this with nginx+lua(openresty)+(Redis or Mongodb?) combination.
As the two are unrelated task I am planning to split it, to do both asynchronously.
As the first task in a redirection, ngx.redirect("/link") seems apt for the case. But the documentation says redirect call will terminates the processing of the current request
How can I make these two tasks independent and redirection will happen as fast a possible and should not wait for the completion of the second task?

Thanks for any help

.

hamish.forbes

Sounds like you want the timer API actually: https://github.com/openresty/lua-nginx-module#ngxtimerat

Spawn a timer to run DB step in the background and then do the logic and return a redirect to the request.

On Monday, 9 May 2016 20:44:21 UTC+1, rpaprocki wrote:

Sounds like light threads might be a good solution here?

https://github.com/openresty/lua-nginx-module#ngxthreadspawn
https://github.com/openresty/lua-nginx-module#ngxthreadwait
https://github.com/openresty/lua-nginx-module#ngxthreadkill

On Mon, May 9, 2016 at 12:11 PM, Nithin Mohan <nithin...@gmail.com> wrote:
I am working on a issue with the design of a service which is basically redirection.
The request link I get will contain some params (abc.com/param1=v1&param2=v2). I need to do two tasks on this link
I need to format the link and redirect user to another domain with some params passed(xyz.com/p1=v2) depending on the value of ,say, param1, This step should be as fast as possible
I need to save the link details to my DB after some processing.
I am planning to do this with nginx+lua(openresty)+(Redis or Mongodb?) combination.
As the two are unrelated task I am planning to split it, to do both asynchronously.
As the first task in a redirection, ngx.redirect("/link") seems apt for the case. But the documentation says redirect call will terminates the processing of the current request
How can I make these two tasks independent and redirection will happen as fast a possible and should not wait for the completion of the second task?

Thanks for any help

.