Compression, hash computation, regular expression routing lookups, parsing text, building and serializing datastructures, reading and writing caches; I could go on.

Sure, JavaScript (and Ruby and Python) are usually fast enough with modern hardware - but we can't pretend there's no cost.

deserializing data structures is a great example. JSON.parse is SLOW. all it takes is a bit of bad code that doesn't do any checking of input size/etc... and if an authoritative source starts sending larger payloads than usual, your node process is horked. Granted, that's not a problem remotely specific to node, it just has a bigger effect in a node env.

> Most of it is simple CRUD connected to a database

If my apps were that way, i could have replaced my team with 20 well-fed monkeys.

Honest related question:

Does HN think putting 2-15KB JSON blobs in a Postgres DB running on Docker on a router is a good idea? Oh, and the table stores log data, so there's about 2 million rows after 5 days uptime. What do you think?

EDIT: This was not entirely related but it goes to the notion that it seems like a lot of myopic decision-making has somehow become even more acceptable and I would say this leads to dumb situations as above, and Node.