From 9a1da3c540f799122706abf61fb50e3a94354826 Mon Sep 17 00:00:00 2001 From: Chris Rai Date: Thu, 5 Feb 2026 20:10:07 -0500 Subject: [PATCH] cost service: add per-VIN estimate derivation from actual metrics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Based on cec-prd-cluster-1 data (2026-02-05): - Event Hubs: ~90M msgs/hr, ~230GB/hr - Active VINs: ~3,760 - AKS usage: ~43 cores / ~219GB - Platform base estimate: ~34 cores / ~175GB - Per-VIN marginal: ~2.4mc / ~12MB → rounded to 3mc / 10MB --- services/cost/README.md | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/services/cost/README.md b/services/cost/README.md index b94d7fc..31e7dd5 100644 --- a/services/cost/README.md +++ b/services/cost/README.md @@ -43,7 +43,13 @@ Incremental resources needed for each additional connected vehicle: | Medium | 100-1000 | 5 | 15 | | High | > 1000 | 6 | 20 | -*Based on ~3000 VINs using ~10 cores / 30GB marginal on top of platform base* +**Derivation (from cec-prd-cluster-1 metrics, 2026-02-05):** +- Event Hubs: ~90M messages/hour, ~230GB/hour incoming +- Active VINs: ~3,760 +- AKS cluster usage: ~43 cores / ~219GB RAM +- Estimated platform base: ~34 cores / ~175GB (ClickHouse, Kafka consumers, services) +- Per-VIN marginal: (43-34)/3760 ≈ 2.4mc, (219-175)/3760 ≈ 12MB +- Rounded to 3mc / 10MB for conservative estimate ### Cost Rates