Flash Talks
summary
A rapid set of five‑minute demos shows concrete wins and tools: GraphQL in Rails replaces over/under‑fetching with live query examples; a CSV export bug switches from in‑memory strings to tempfiles and achieves 7x memory reduction (135MB→18MB); swapping Ruby’s allocator yields a 30% infra cost cut and 13% uptime gain; Hotwire demo builds dynamic forms; ActiveRecord runs in the browser via WASM; LangChain RB + PGVector powers RAG chat; Vahana routes reads to slaves with replication‑lag blacklisting; Scientist gem enables safe staged rollouts.
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chapters (15)
- 0:00Introduction and speakers
- 4:02GraphQL in Rails
- 7:17CSV export memory issue
- 11:19Hotwire in production
- 15:29Design patterns in e-commerce
- 18:15Ruby memory allocator optimization
- 21:07Database load balancing
- 25:26Quality engineering at scale
- 29:49ActiveRecord in browser
- 34:39ActionMailer previewing
- 39:17LangChain for documentation
- 44:13Effective documentation
- 48:01gRPC for microservices
- 52:18Rails security threats
- 57:59NPCI payment infrastructure
