JavaScript Cloud Native Development Cookbook

How to do it...

1. Create the project from the following template:

$ sls create --template-url https://github.com/danteinc/js-cloud-native-cookbook/tree/master/ch9/frp-batching --path cncb-frp-batching

2. Navigate to the cncb-frp-batching directory, cd cncb-frp-batching.
3. Review the file named serverless.yml.
4. Review the file named handler.js with the following content:

module.exports.listener = (event, context, cb) => {  _(event.Records)    .map(recordToUow)    .filter(forPurple)    .ratelimit(Number(process.env.WRITE_CAPACITY) /      Number(process.env.SHARD_COUNT) /      Number(process.env.WRITE_BATCH_SIZE) / 10, 100)    .batch(Number(process.env.WRITE_BATCH_SIZE))    .map(batchUow)    .flatMap(batchWrite)    .collect().toCallback(cb);};const batchUow = batch => ({ batch ...