DIGISIM.OBSERVATORY · category 05 — systems
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category 05 · systems

Networks that breathe in real time.

Grids, flows and sensor swarms — load and price across a synthetic grid, devices wired into logic — streamed live and watched as they shift.

apps live 2
in design 0
opened 05·12
SYST-001 · LIVE running
featured · live now
Energy Grid Monitor

Live load, generation and price across a synthetic power grid.

systemsenergyrealtimedashboard
2026-05-12 /systems/energy-grid
in this section · 16 apps
SYST-002 service
Node-RED Flows

The flow editor itself, embedded — wiring devices into logic.

systems ↗ flow.digisim.dev
SYST-003 ready
Water Network

A municipal water grid solved for real: a reservoir feeds homes and hydrants through a web of pipes, head loss balances around every loop, and you watch pressure drain across the map when you open a hydrant or break a main.

systems /systems/water-network
SYST-004 ready
Warehouse Robots

A Kiva-style robot fulfillment floor: orders arrive, the nearest free robot is dispatched to A*-route a shelf pod to a pick station and back — crank the fleet size and watch throughput climb until traffic congestion at the choke points saturates it.

systems /systems/warehouse-robots
SYST-005 ready
Supply Chain

Watch a tiny blip in customer demand snowball into wild order-and-inventory swings up a multi-stage supply chain — the bullwhip effect, live.

systems /systems/supply-chain
SYST-006 ready
Rumor Cascade

Whisper a rumor into one node of a social network and watch it cascade — the Daley–Kendall model with ignorant, spreader and stifler states, where chatter takes off, gets old, and dies out before everyone has heard.

systems /systems/rumor-cascade
SYST-007 ready
Queueing Theory

Watch an M/M/c queue breathe — Poisson arrivals stream into a line, exponential servers drain it, and the wait explodes the instant the traffic intensity crosses one.

systems /systems/queueing-theory
SYST-008 ready
Pub/Sub Bus

A publish/subscribe message bus you can watch breathe — publishers emit on topics, a broker fans each message out to every subscriber, and a slow consumer’s queue visibly fills until lag explodes and messages drop.

systems /systems/pub-sub
SYST-009 ready
Microservices Trace

Watch a single request fan out through a microservice mesh and assemble a live Jaeger-style trace waterfall — then inject latency and errors to make spans stretch, retries fire, and a circuit breaker trip in real time.

systems /systems/microservices
SYST-010 ready
Load Balancer

Watch a load balancer fan a storm of requests across a backend pool — switch routing strategies, kill a node, flip on autoscaling, and see queues fill, saturate, and drop in real time.

systems /systems/load-balancer
SYST-011 ready
Kanban Flow

A self-running kanban board where work cards age and flow through WIP-limited columns — loosen the limits or starve a bottleneck and watch cycle time balloon as Little’s Law plays out in the cumulative flow diagram.

systems /systems/kanban
SYST-012 ready
Epidemic on a Network

Light a single infected node and watch a contagion race across a living graph — random, small-world, scale-free or spatial — while the SIR curve below charts the outbreak peak and the wall of herd immunity.

systems /systems/epidemic-network
SYST-013 ready
Elevator Dispatch

A bank of elevator cars serving a building of Poisson-arriving passengers — switch dispatch policies and watch SCAN and zoning crush naive nearest-car under up-peak traffic.

systems /systems/elevator-dispatch
SYST-014 ready
Cellular Handoff

Watch your phone stay connected as it roams — mobiles lock onto the strongest tower, hand off across cell boundaries, and get blocked when a crowded cell runs out of channels.

systems /systems/cellular-handoff
SYST-015 ready
Blackout Cascade

Trip one transmission line and watch its load pour onto its neighbours — overloading them, tripping them, until a single failure has dragged a whole region into the dark, the way the 2003 Northeast blackout did.

systems /systems/blackout
SYST-016 ready
Assembly Line

Watch parts crawl through a chain of work stations until one slow machine starves the rest — the Theory of Constraints made visible, where only relieving the bottleneck ever raises throughput.

systems /systems/assembly-line
SYST-017 ready
Air Traffic Control

Sequence inbound aircraft onto the final approach while keeping radar separation — crank the arrival rate and watch holding stacks form as the auto-controller juggles throughput against safety.

systems /systems/air-traffic-control
systems · category 05 ← back to observatory