Packet loss on mobile networks still punishes HTTP/1.1 head-of-line blocking—but HTTP/3 only helps if CloudFront terminates QUIC and your origin connection pools are sized for multiplexed streams. This guide connects Reno, Cubic, BBR, HPACK, and QUIC to ALB and CloudFront decisions.
Local JWT validation is fast until revocation lags bite you. When to introspect at Cognito, use API Gateway JWT authorizers, and add Verified Permissions for fine-grained authz.
Token buckets allow bursts; leaky buckets smooth traffic—WAF rate rules and API Gateway usage plans implement neither perfectly but both matter for layered defense.
Three API types, three pricing models, three authentication patterns — and the wrong choice baked into your URL design for years. A decision guide for picking REST vs HTTP vs WebSocket APIs, with the throttling and caching configs that decide your monthly bill.
