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CL-403 Cloud & Platform

Performance & Load Engineering with k6

Prove capacity claims with load, not opinion: k6 scripting, open vs closed workload models, ramp and spike profiles, threshold-based pass/fail, and interpreting results into capacity plans — the same tooling our capstones use to grade a live 5× storm.

B4Professional
5modules
35skill atoms
4role journeys
Curriculum

What this course covers.

5 modules, 35 named skill atoms. Expand any module to see them.

1Load-Model Literacy7 skill atoms
open vs closedVUs vs arrival ratethink time & pacingcoordinated omissionconcurrency vs throughput relationshipworkload shaped from production trafficwarm-up effects
2k6 Scripting7 skill atoms
scenarioschecksthresholdsconstant-arrival-rate vs ramping-vus executorscustom Trend & Counter metricstags and groups for slicingparameterised test data
3Profiles that Reveal7 skill atoms
rampspikesoakstress designssoak exposing leaks & connection exhaustionspike measuring autoscaler reactionstress to find the knee point
4Reading Results7 skill atoms
p95 truthsaturation signatureswhy averages hide the taillatency vs throughput inflectionerror onset before the latency cliffload generator as the bottleneckcorrelating with server-side metrics
5Capacity Verdict Lab7 skill atoms
test a servicewrite the capacity planmax sustainable RPS within SLOheadroom recommendationproposed scaling policy changecost per unit of capacityretest evidence
Where it fits

CL-403 in the role journeys.

This course appears in 4 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

MLOps / LLMOps Engineer

Professional stage
AI-209CL-403AI-211

AI Quality / Eval Engineer

Professional stage
AI-310CL-403AI-404

Site Reliability Engineer

Practitioner stage
CL-401CL-403CL-322

QA / Test Engineer (AI-era)

Professional stage
AI-311CL-403DEV-304

Roles this course serves

The capability ladder

This course is authored to band B4.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence
B1
AwareUnderstands concepts and vocabulary; uses tools with guidance
Knowledge checks
B2
FoundationPerforms standard tasks correctly in familiar contexts
Guided labs, autograded exercises
B3
PractitionerDelivers complete pieces of work independently
Scenario labs, proctored hands-on exams
B4
ProfessionalHandles production-grade complexity, trade-offs and failure modes
Break-fix drills, design defenses
B5
AdvancedEngineers systems end-to-end under constraints; leads others
Rubric-scored capstones, vivas
B6
ExpertSets direction; recognised authority across teams
Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Next step

Run CL-403 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

Add it to a training plan Talk to our team Check your team’s level free