From Zero to Live with Functional JavaScript Applications (Part 2)

on YouTube ↗58m

" summary

Claims that refactoring a monolithic OOP codebase into composable functional JavaScript unlocks multi‑million‑pound opportunities, lowers bug counts, and speeds time‑to‑market; demonstrates working code: microservices built with micro, Docker and pm2, instrumented with Prometheus metrics, logs with level/tagging, immutable updates via Crocs/Ramda patterns, async/task wrappers and tests; shows a Hystrix‑style circuit breaker protecting downstream calls, demoing open/half‑open behavior with toxiproxy causing timeouts so failures don’t cascade.

AI-written summary · about

" chapters (22)

1. 0:00Intro
2. 0:11Level Mapping to Numbers
3. 4:27Logger Notes
4. 6:30Logger Level
5. 7:38Hello World
6. 9:15Express
7. 14:00Testing
8. 16:15Native vs Functional
9. 16:55Developer break
10. 17:10Choice
11. 18:15Prometheus
12. 22:00Default metrics
13. 22:25Prometheus endpoint
14. 23:25Processing time
15. 25:05Prometheus client metrics
16. 26:30Reading through the code
17. 28:05Outputing the code
18. 30:05Using Micro
19. 32:25Process Management
20. 45:00HTTP Client Breaker
21. 50:00Circuit Breaker
22. 54:00Demo

" related talks

• 28mReacting to changeBen Cooper · Front End North 2018
• 11mIntroduction to functional programmingManju Vijayakumar · LeadDev Austin 2019
• 28mHow to Get Started With Functional ProgrammingJulia Gao · Strange Loop 2016
• 28mHow to use Functional Programming in your React appNetta Bondy, Dafna Rosenblum · ReactNext 2019
• 23mHow we’re embracing functional programming to build a large SPAAnton Abilov · JSConf US 2019
• 49mFrom Frameworks to SuperframeworksSergey Yuferev · HolyJS 2017 Piter
• 25mA Guide To Functional ProgrammingJemima Abu · ConfrontJS 2022
• 46mThe Zen of Programming. A personal journey towards writing beautiful code.Sander Hoogendoorn · Voxxed Days Brussels 2023