Layer 7 — Patterns and problems
Layer 7 is the named arguments and laws that show up in design reviews: end-to-end, Conway, strangler fig, tail latency, and gossip.
Pradeep P
Gossip Protocol
Each node tells a few peers what it knows. Eventually the cluster agrees, without a single coordinator.
Pradeep P
Tail at Scale
If one request fans out to 50 backends, the slowest of those 50 is your user-visible latency.
Pradeep P
Strangler Fig
Do not rewrite the monolith in one shot. Intercept calls, replace slice by slice, then retire the core.
Pradeep P
Conway's Law
You ship your org chart. Service boundaries that fight how people talk will keep rotting.
Pradeep P