How to set TCP NODELAY for db connections on a spring boot application

Question

I have a java web application built on spring boot and spring data using Hikari pool, deployed in azure Kubernetes cluster, connecting to azure postgres database. To solve a performance issue the Azure team has advised to set TCP NODELAY for this application. Can you please advise how to configure this for the spring application

Answer 1

Current version of PostgreSQL JDBC Driver (42.3.1) does not support TCP_NODELAY option. But next version (42.3.2) will be supported.

After 42.3.2 version you can use TCP_NODELAY option by adding 'tcpNoDelay=true' at the end of the JDBC URL like jdbc:postgresql://localhost:5432/postgres?tcpNoDelay=true

The issue link: https://github.com/pgjdbc/pgjdbc/issues/2324

The commit link: https://github.com/pgjdbc/pgjdbc/commit/2a8ecbe2321ed92bc7051d3415a0484a5464346b#diff-af76c66c8a01becfcbfe739ba0cc2e4333e7d27865cb67cbb63db2e6f534801a