Blocking/Removing one of the predefine worker process to not accept client request

rohit.c.joshi · 2017-11-26T23:15:58+00:00

We are using Openresty and have various lua shared dict. We are unable to see how much shared memory has been used so far. I tried installing systemtap and l...

Blocking/Removing one of the predefine worker process to not accept client request

rohit.c.joshi

Is there any way to configure an OpenResty where one of the Nginx worker processes will not accept client requests? I want to utilize one of the process to periodically retrieve data from RDS and update the cache, replicate Redis. This application requires low latency response time and do not want worker process to delay the response due to other processing.

zchao1995

Hi!

OpenResty implements a special non-worker process called privilege-agent process, which has the same permission with the master process, and it never open any listen sockets but can process the nginx timer event, maybe you can try it? https://github.com/openresty/lua-resty-core/blob/master/lib/ngx/process.md

On Sunday, November 26, 2017 at 11:15:59 PM UTC+8, RJoshi wrote:

Is there any way to configure an OpenResty where one of the Nginx worker processes will not accept client requests? I want to utilize one of the process to periodically retrieve data from RDS and update the cache, replicate Redis. This application requires low latency response time and do not want worker process to delay the response due to other processing.

rohit.c.joshi

Thanks.

On Sunday, 26 November 2017 20:46:06 UTC-5, tokers wrote:

Hi!

OpenResty implements a special non-worker process called privilege-agent process, which has the same permission with the master process, and it never open any listen sockets but can process the nginx timer event, maybe you can try it? https://github.com/openresty/lua-resty-core/blob/master/lib/ngx/process.md

On Sunday, November 26, 2017 at 11:15:59 PM UTC+8, RJoshi wrote:
Is there any way to configure an OpenResty where one of the Nginx worker processes will not accept client requests? I want to utilize one of the process to periodically retrieve data from RDS and update the cache, replicate Redis. This application requires low latency response time and do not want worker process to delay the response due to other processing.