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Rombona
Rombona / System Lab

Engineering,
made visible.

A set of small browser simulations. Nothing here connects to live infrastructure — they exist to make system behaviour easier to reason about.

All experiments are simulations
Experiment 01

Request visualizer

Simulated request path across six hops, with selectable conditions.

Simulated request
  1. 01Browser—
  2. 02DNS—
  3. 03Gateway—
  4. 04Application—
  5. 05Database—
  6. 06Response—
Total / — · demo values
Experiment 02

Infrastructure builder

Assemble an illustrative architecture from three inputs.

Design a system

What are you building?

Expected scale
What matters most
Illustrative architecture
  1. User01
  2. CDN / Edge Cache02
  3. Load Balancer03
  4. Application04
  5. API Gateway05
  6. Database06
  7. Object Storage07
  8. Backup08
  9. Monitoring & Alerting09
Discuss This Architecture
Experiment 03

Deployment pipeline

Five stages, one happy path and one failure path.

Pipeline / illustrative
  1. Stage 01

    Code

    QUEUED
  2. Stage 02

    Test

    QUEUED
  3. Stage 03

    Build

    QUEUED
  4. Stage 04

    Deploy

    QUEUED
  5. Stage 05

    Monitor

    QUEUED

Experiment 04

Incident simulator

Degrade a service and follow the recovery sequence.

Rombona / System LabInteractive demonstration

  • API Gateway

    HEALTHY

  • Database

    HEALTHY

  • Worker Queue

    HEALTHY

  • Storage

    HEALTHY

  • Monitoring

    ACTIVE
> awaiting operator input — all metrics are simulated

Reliable systems are designed for failure, not just success. This dashboard uses simulated data and does not monitor any real infrastructure.

Experiment 05

Network latency

Simulated packet travel between European locations.

Simulation — not live network data

LATENCY / —

Experiment 06

Load balancing

One hundred simulated requests, with and without distribution.

Conceptual demonstration

Incoming requests / 100

node-01

OVERLOADED

100 requests

node-02

IDLE

0 requests

node-03

IDLE

0 requests

One node absorbing all traffic becomes the failure point. Distributing requests keeps each node inside a safe operating range and allows a node to be removed without an outage.

Experiment 07

Architecture explorer

An illustrative end-to-end system map.

Interactive architecture demo

Illustrative reference architecture — not a representation of customer infrastructure.

Application

Application

  • Frontend systems
  • Application services
  • Deployment