Systems 101 · Lumen Cloud

How a request
finds its way

From a tap on a phone to a row in the database — one request, traced hop by hop.

ComputeStorageData in flight
01 · The path

Four hops, every time

Live request
Standby route
Clientyou, on 5G
Gatewayroutes · rate-limits
App nodes×3 · autoscaled
Databaseprimary + 2 replicas
L1 · NVMe + blobsStorageL2 · event logQueueL3 · statelessAPIL4 · 31 regionsEdge cache
02 · Inside a node

One node,
four layers

ms
median round-trip, worldwide
p50 · 31 regions · last 30 days

Lumen Labs

Infrastructure you can explain on a napkin.

Read the systems guide
lumenlabs.dev/systems