When do you actually need Redis, Reverb and queues?

1. The honest scale numbers

Under ~1,000 daily users, a single $10 VPS with PHP-FPM and MySQL handles almost every product in the vault without Redis or queues. You add them when jobs (emails, pushes, imports) start blocking requests.

• Queues: needed once you have email blasts, CSV imports or webhook fan-out
• Redis: cache + queue driver + rate limiting — cheap and worth it from day one
• Reverb/Broadcasting: only when you need live dashboards (driver map, KDS, tables)
• Horizon: pretty queue monitoring — add later, not at launch