Cached Clients

[bliu13]

Hi, I am trying to figure out how I can cache clients for each worker. This is what my worker file looks like:

import getSomeClient from './someClient.js';

let cachedClient = null;

async default function myWorker(event) {
  if (cachedClient == null) {
    cachedClient = getSomeClient();
  }

  // TODO: Use Cached Client
}

For some reason, the cachedClient variable is undefined and I don't know how I could close the cachedClient if the worker is destroyed.

[metcoder95]

What you are attempting should totally work; you can return a curried function that takes care of building the client and creates a closure that can be make usage of that cached client.

To destroy your client upon worker being destroyed, you can attach a lister to process.on('exit') like you'll do with your normal Node.js process.