High density server side java script

on YouTube ↗36m

" summary

Claim: run 1,000 lightweight server‑side JS apps in one OS process and show ~150 MB total (~150 KB per app), cutting a €5 shared hosting slot to about €0.30. Prototype uses a V8 hosting layer called denser, mixes V8 isolates (one per thread) and V8 contexts (many per isolate) with node/vm primitives on Windows. Shows per‑app CPU/memory/network metering. Limits: runaway loops can starve a shared thread and current V8 lacks native per‑context memory caps so GC and preemption strategies are required.

AI-written summary · about

" chapters (11)

1. 0:00Start
2. 0:16High density server side JavaScript
3. 0:46You have just developed a lightweight web application
4. 2:30Now you must find a place to host it
5. 3:00It should be cheap to run lightweight web applications
6. 3:28Application density is the key cost factor in shared hosting
7. 4:42The price of a hosting plan goes down when application density increases
8. 6:30Shared hosting plans require isolation and resource use metering
9. 10:42Can we do better than process scope?
10. 10:53Using threads instead of processes increases application density
11. 21:08Sharing a thread between applications increases application density

" related talks

• 23mRuntime.JS: V8 JavaScript KernelSergii Iefremov · JSConf EU 2014
• 19mPocket-sized JSHenrik Joreteg · dotJS 2015
• 24m10 things I learned making the fastest JS server runtime in the worldPaulo Lopes · JSNation 2019
• 29mhome-grown server-side scriptingAndrew Paprocki · JSConf US 2011
• 38mBuilding Universal AppsRobert Onodi · JSHeroes 2017
• 41mJerryScript: An Ultra-lightweight JavaScript Engine for the Internet of ThingsTilmann Scheller · Embedded Linux Conference + OpenIoT Summit Europe 2016
• 27m10 things I learned making the fastest JS server runtime in the worldPaulo Lopes · JSConf EU 2019
• 36mSelf-hosted JSAndy Wingo · ffconf 2014