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LV2 · Toolooo Standard
Explore → See → Understand → ActUnderstand it. Feature Level describes the depth of the tool experience.

SLA Chain Visualizer

Chain services with their own uptime SLAs and watch how fast combined availability erodes.

EngineeringBackendArchitectureReliability
3 services
99.90%
Which services have a redundant backup? (2× parallel instances)
Service 199.90%chain so far: 99.900%Service 299.90%chain so far: 99.800%Service 399.90%chain so far: 99.700%Combined chain99.700%1.1d downtime/yr
Combined availability
99.700%
Downtime per service/year
8.8h
assuming this SLA holds all year
Combined downtime/year
1.1d
3.0× a single service's downtime
✓
Still 99.700% — but already below every service in it
The combined number still looks respectable, but it's already worse than the 99.90% each individual service promises — that's what chaining does, on purpose or not. Add a 4th, 5th, or 6th service to this same chain and watch it keep eroding: nothing here degrades gracefully, it just compounds.

Understand SLA Chain Visualizer

What this tool helps you understand

Add services with their individual uptime percentages to a request chain and see the combined availability calculated and visualized — "five nines" disappears fast once a request depends on more than one thing.

When to use it

Use SLA Chain Visualizer when engineering, backend, and architecture work raises questions about sla calculator, combined uptime, and availability chain and you need a concrete view before making the next move.

How to read the result

Compare the shape and direction of different scenarios. The useful signal is how the result changes when an input changes, rather than one isolated number.

Assumptions and limits

This is a simplified explanatory model, not a load test or production forecast. Real systems can include dependencies, distributions, failures, and feedback loops outside the selected inputs.

Toolooo is part of Khizooology, created byKhizar Imtiaz (khizooo).