State Management

📖 Series Navigation: ← Previous Chapter: Modular Monolith vs Microservices vs SpinKube Wasm | Series Hub Part 8: Redis State Store vs Dapr Virtual Actors Showdown Answer-first: Redis in-memory state with atomic Lua scripts achieves 3.4ms P99 at 100k+ QPS for flat caching, whereas Redlock suffers from clock drift and spinlock contention. Conversely, Dapr Virtual Actors maintain a flat 6.8ms P99 with 0.0% aborts and 87% lower RAM across 1M stateful AI agents via turn-based mailboxes, automatic state hydration, and consistent hashing placement. ...

📖 Series Navigation: ← Previous Chapter: Redis Distributed State vs. Dapr Virtual Actors | Series Hub | Next Chapter: Part 10 — Envoy Gateway vs. Cilium eBPF Service Mesh → Part 9: Cookie vs. SessionStorage vs. LocalStorage Showdown: Network Headers Tax, Tab Isolation & Token Storage Architecture Answer-first: Choose HTTP Cookies (HttpOnly; Secure; SameSite=Strict) for server-authenticated sessions and SSR edge gatekeeping to eliminate XSS token theft. Use sessionStorage for tab-isolated multi-step checkouts to prevent state collision. Reserve localStorage exclusively for non-sensitive UI preferences (<50KB) to prevent synchronous main-thread I/O blocking that degrades INP. Use IndexedDB for large offline state. ...