Scala the Cloud Native Way...

on YouTube ↗23m

" summary

Linkerd is a Scala/Finagle/Netty service mesh used in production at Salesforce, CreditKarma and FOX that struggles with per-sidecar memory. Engineers switch the JVM from HotSpot to OpenJ9 and drop a typical per-host footprint from ~400MB to ~213MB and further to ~170MB with tuning flags. They explore ahead‑of‑time compilation with GraalVM (blocked by dynamic plugins) and rewrite the proxy in Rust to get sub‑millisecond latency. Core tools highlighted include Finagle, Netty, JVM tuning and a move to a per‑host deployment model.

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" chapters (11)

1. 0:00Start
2. 2:45Why you would use it?
3. 5:52The world is going cloud native
4. 6:37Linkerd runs as a distributed proxy
5. 7:41Alternative deployment: Per Host
6. 9:16Ways to reduce JVM memory footprint
7. 10:19Tuning JVM, Finagle, Netty • JVM flags
8. 13:15Other OpenJ9 optimizations
9. 16:31Don't use the JVM
10. 18:12Current state of Linkerd
11. 19:33Recap

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