https://cpp.anacay.org New versions of the seed paper, new case studies and new working notes from the open body of knowledge for capacity planning. en https://cpp.anacay.org/cases/kuantillion-cloud/ https://cpp.anacay.org/cases/kuantillion-cloud/ Fri, 30 Oct 2026 12:34:51 GMT A fictional hyperscale fleet trying to get the most from its older flash drives during a flash shortage, with the problem set out in full and the practice's answer beside it. https://cpp.anacay.org/notes/second-lives/ https://cpp.anacay.org/notes/second-lives/ Fri, 30 Oct 2026 12:17:11 GMT Capacity that comes back out of the fleet arrives in parts, of uncertain condition, as a byproduct of other decisions. The second emerging-topics working note. https://cpp.anacay.org/notes/buildings-at-ai-density/ https://cpp.anacay.org/notes/buildings-at-ai-density/ Wed, 28 Oct 2026 19:52:59 GMT The shell used to be fungible, and half the discipline quietly leaned on that. The first emerging-topics working note. https://cpp.anacay.org/cases/popcorn-pajamas/ https://cpp.anacay.org/cases/popcorn-pajamas/ Wed, 28 Oct 2026 09:33:34 GMT A fictional streaming service's whole capacity problem, built from public information. The case leaves the answers open; a companion page shows how the practice approaches it. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.9 Sat, 10 Oct 2026 12:00:00 GMT Tested against fields that solved neighbouring problems first. Telephone engineering joins the lineage. New evidence: why not to split a shortage pro rata, why to name shared drivers rather than trust a low correlation, how grid queues handled speculative requests, and measured AI demand. One labeled exploration: some AI demand is better declared as a policy than a forecast. New sources are listed as A1 to A9. Later the same day, several reference links were made sturdier. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.8 Sat, 10 Oct 2026 12:00:00 GMT Credit re-checked against both sources. More of the frame is credited to Hixson and Guliani: blow-up factors as an early form of the coefficient, the fast lane, one plan for several products' upside, and the limits small companies face. The 2026 SRE chapter's link to error budgets is quoted again, and its stockout resiliency is named. Several reference links repaired. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.7 Fri, 09 Oct 2026 12:00:00 GMT Prior art re-checked. Section 5.2's measuring loop is labeled as this paper's arrangement of the 2026 SRE chapter's advice, and a few readings of the chapter are softened. Hixson and Guliani's “costs” are read as an early form of the coefficient, and Figure 6 is updated to match. Several points are made more precise where practitioners would push back: coefficients as a straight-line reading near today's load, redundancy set per cell with uneven failover, the next purchase pulled earlier by a marginal job, and buffers that multiply only if latency must hold during a failure. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.6 Wed, 07 Oct 2026 12:00:00 GMT Section 10 now opens with the handshake: capital, supply and demand, with the planner brokering it, and what the planner trades in. Figure 41 is redrawn as that triangle, with the three seams on its edges. Section 5.2 lays out the 2026 SRE chapter's measuring loop step by step, credited in full, and adds the price reading; Figure 10 is redrawn as two rings. Short notes on people practice are added across Sections 6, 9, 10, 12 and 14, with re-baselining as a routine step. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.5 Wed, 07 Oct 2026 12:00:00 GMT The 2026 SRE capacity planning chapter, read in full, is credited wherever it got there first. Nineteen new public sources, including the discipline's lineage in Section 3. Eight labeled explorations, offered as ways to think rather than findings. Two new figures: a pooled launch reserve (Figure 28) and the Meet case on two clocks (Figure 47). References renumbered by first appearance. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.4 Wed, 07 Oct 2026 12:00:00 GMT Most long sentences split into shorter ones. Each test in Section 9.4 moved onto the mechanism it checks, under “You'll know it's working when…”. Mechanism 3 renamed the coefficient register and versioned rate card. A version line, a note on what is meant to last, and a “What changed” table added to the front matter. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.3 Wed, 07 Oct 2026 12:00:00 GMT A new figure for the channel to challenge coefficients (Section 10.4). Earlier hedges on the method's status. With this version the figures and captions, read alone, carry every main point of the paper. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.2 Wed, 07 Oct 2026 12:00:00 GMT Figures carry the argument: flowcharts, swimlanes, a decision tree, a matrix, cycles and charts of public values. Each appendix rebuilt to stand on its own. The reference list renumbered by first appearance. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.1 Tue, 06 Oct 2026 12:00:00 GMT The visual program: one visual language for every figure, with errors in older figures corrected. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v7.0 Tue, 06 Oct 2026 12:00:00 GMT The layered format: abstract, executive summary, one page and deep dive. Two claims and a method stated plainly. New Section 8, the commit-point method. The supply side rewritten around public values. New Appendix A (a worksheet with a walk-through) and Appendix B (the public record on supply). https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v6 Mon, 05 Oct 2026 12:00:00 GMT Rewritten in a practitioner's voice. Each section opens with something a planner has seen, then the mechanism, then the principle, with an “In short” line at the top. One picture per idea. Credit to Hixson and Guliani's 2015 article checked against the source and widened. https://cpp.anacay.org/changes/ https://cpp.anacay.org/changes/#v5 Mon, 05 Oct 2026 12:00:00 GMT Step-change demand and supply merged in as an extension of the second claim: approval is not allocation in time, as well as in shape and place.