clean up your redis client connections! make a call to this whenever you create a new client

cleanup.js

const cleanupClientOnProcessEnd = (options) => {
  const sAction       = 'cache.cleanupClientOnProcessEnd';
  const name          = options.name;
  let client          = options.client;
  const killDelayTime = 500;

  const killClient = (sType) => {
    // console.info({action: `${name}.${sAction}.${sType}.client.quit` });
    client.quit();
    
    setTimeout( () => {
      client.end(true);
      // console.info({action: `${name}.${sAction}.${sType}.client.end` });
      if (sType === 'SIGINT' || sType == 'SIGTERM') {
        process.exit(0);
      }
    },killDelayTime);    
  }
  
  process.on( 'SIGINT', () => {
    killClient('SIGINT');
  });    

  process.on( 'SIGTERM', () => {
    killClient('SIGTERM');
  });

  process.on('exit', (code) => {
    killClient('exit code' + code);
  });
}