Question

I am in process of developing an MFC based Windows based application, using PostgreSQL which would perform

1. Fetches information from the UI
2. Performs some logic and store related information to the database
3. The stored information has to be send immediately OR at schedule interval (ex. at 5:00 on xyz date) over the network

Currently, we have developed a dispacher mechanism (thread ), which constantly polls the database for new information inserted in the database. The thread fetches the information and send to the network module.

But, I feel this is not the correct approach as

1. Polling every time is a overhead. There can be times when there is nothing to execute
2. It is not real time , because we poll after every 5 seconds

So

1. Is there a way to send a trigger to my network module as soon as information is updated in database?

2. Or any better way to achieve this task?

Thanks in advance.

Answer 1

Yes you are right @RDX, you shouldnt poll it every time rather you could write a trigger in Postgres and from that trigger try calling a java program which could be seen in the below thread.

Calling java pgm from Postgres trigger