Suggestion: Use incr operation to update hits and read new value

[jhecking]

You might want to consider using the incr operation to increment the "hits" bin of a record and read the new value in a single database operation:

const ops = [
  Aerospike.operations.incr('hits', 1),
  Aerospike.operations.read('hits')
]
const meta = {
  ttl: Aerospike.ttl.DONT_UPDATE
}
client.operate(key, ops, meta).then(result => {
  if (result.hits >= limit) {
    console.info('limit exceeded!')
  }
})

Setting ttl to DONT_UPDATE will prevent the record's expiry time to get updated.
The incr operation will even create a new record for you automatically if there is no record for the key yet.