F1: The Principle of Congestion Collapse
When loadinb becomes too high, we will see a sudden and catastrophic drop in output
F2: The Peak Throughput Principle
Control occupancy to sustain high throughput in systems prone to congestion
F3: The Principle of Visible Congestion
Use forecasts f expected flow time to make congestion visible
F4: The Principle of Congestion Pricing
Use pricing to reduce demand during congested periods
F5: The Principle of Periodic Resynchronization
Use a regular cadence to limit the accumulation of variance
F6: The Cadence Capacity Margin Principle
Provide sufficient capacity margin to enable cadence
F7: The Cadence Reliability Principle
Use cadence to make waiting times predictable
F8: The Cadence Batch Size Enabling Principle
use a regular cadence to enable small batch sizes
F9: The Principle of Cadenced Meetings
Schedule frequent meetings using a predictable cadence
F10: The Synchronization Capacity Margin Principle
To enable synchronization, provide sufficient capacity margin
F11: The Principle of Multiproject Synchronization
Exploit scale economics by synchronizing work from multiple projects
F12: The Principle of Cross-Functional Synchronization
Use synchronized events to facilitate cross functional trade-offs
F13: The Synchronization Queueing Principle
To reduce queues, synchronize the batch size and timing of adjacent processes
F14: The Harmonic Principle
Make nested cadences harmonic multiples
F15: The SJF Scheduling Principle
When delay costs are homogeneous, do the shortest job first
F16: The HDCF Scheduling Principle
When job durations are homogeneous, so the high cost-of-delay job first
F17: The WSJF Scheduling Principle
When job durations and delay costs are not homogeneous, use WSJF (weighted shortest job first)
F18: The Local Priority Principle
Priorities are inherently local
F19: The Round-Robin Principle
When task duration is unknown, time-share capacity
F20: The Preemption Principle
Only preempt when switching costs are low
F21: The Principle of Work Matching
Use sequence to match jobs to appropriate resources
F22: The Principle of Tailored Routing
Select and tailor the sequence of subprocesses to the task at hand
F23: The Principle of Flexible Routing
Route work based on the current most economic route
F24: The Principle of Alternate Routes
Develop and maintain alternate routes around points of congestion
F25: The Principle of Flexible Resources
Use flexible resources to absorb variation
F26: The Principle of Late Binding
The later we bind demand to resources, the smoother the flow
F27: The Principle of Local Transparency
Make tasks and resources reciprocally visible at adjacent processes
F28: The Principle of Preplanned Flexibility
For fast responses, preplan and invest in flexibility
F29: The Principle of Resource Centralization
Correctly managed, centralized resources can reduce queues
F30: The Principle of Flow Conditioning
Reduce variability before a bottleneck
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