ByteByteGo just released a high level overview of Shopify's Tech Stack, which my team and I help out with writing. Let me know if you have questions!

YJIT hopefully soon to be ZJIT. :)

Surprise they use Sorbet. I thought only Stripe were using it.

Their usage for OpenResty, so essentially Shopify operate their own Fastly?

Still dont know what is Remix.

I wonder if they use Vitess with MySQL.

Why keep memcached around when Redis could do the job as well?