Using OR-Tools CP-SAT to Optimize Cloud Infrastructure Maintenance Scheduling at Akamai
By
akutlay
Toasted golden, schmeared with insight. Top of the rack.
Summary
The article discusses using Google's OR-Tools CP-SAT solver to optimize maintenance scheduling in Akamai's cloud infrastructure. It addresses the complex problem of scheduling disruptive maintenance on hypervisor hosts serving hundreds of thousands of guest VMs, balancing competing constraints like capacity, customer disruption SLAs, and concurrency limits across hosts, racks, and datacenters. The author compares various optimization tools including commercial and open-source MIP solvers before settling on OR-Tools CP-SAT for prototyping solutions.
Key quotes
· 3 pulledI've been working on improving how we schedule maintenance in Akamai's cloud infrastructure, especially disruptive maintenance on hypervisor hosts serving hundreds of thousands of guest VMs.
The problem is fairly complex, with competing constraints such as capacity, customer disruption SLAs, and concurrency limits across hosts, racks, and datacenters.
After exploring different options, I found Google's OR-Tools library, particularly its CP-SAT solver.
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