docs(day1): Bloomberg call

content/day1/05_ressource-submission-bookkeeping.md

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+---
+title: "Reliable k8s resource Submission & Bookkeeping"
+weight: 5
+tags:
+ - kubecon
+ - platform
+---
+
+<!-- {{% button href="https://youtu.be/rkteV6Mzjfs" style="warning" icon="video" %}}Watch talk on YouTube{{% /button %}} -->
+<!-- {{% button href="https://docs.google.com/presentation/d/1nEK0CVC_yQgIDqwsdh-PRihB6dc9RyT-" style="tip" icon="person-chalkboard" %}}Slides{{% /button %}} -->
+
+## Service offerings
+
+- Product: HA Container Platform for general utility with a focus on run-to-complete
+- Use-Cases: ML Orchestration, CI/CD, Machine maintainace, Financial analysis, Data Processing pipeline
+- Requirements: Observability, Scheduling Events, Approval process, Bookkeeping, Datacenter Reseliency
+- Focus: Resiliency (HA with datacenter failover)
+- What the user needs: Workflow (e.g. generate report, persist report, notify)
+- What we need for the user: ConfigMaps + Secrets, Workflow templates for the steps
+
+## Challenges
+
+- Read after modify across multiople datacenters
+- Many reads against kubeapi that could overload the apiserver
+- No native approval flows and limited audit
+
+## Submission flows from a users perspective
+
+### Submission of runnables
+
+- User: Submits runnable to subnitter with audit
+- Submitter: Handels retry, verification, ...
+- Submitter: Configures workload on workload clusters
+
+TODO: Steal image from slides
+
+### Submission of deployables
+
+- User: deploys mutation to audit/sourceoftrough
+- Syncer: Syncs deployables to workload clusters
+
+TODO: Steal image from slides
+
+## Reporting
+
+- User wants: UI with latest status for all jobs
+- Compliance wants: Transactions on given resource for auditing
+- Implementation: Highly available inventory as single source of truth
+
+```mermaid
+graph
+    WorkflowAPI-->|reads|inventory
+    Consumer-->|updates|inventory
+    Producer-->|publishes events to|Consumer
+```
+
+### Potential Problems
+
+- Problem: Delete event does not get propagated from syncer to producer leading to zombie ressources
+- Fix: Periodic Cleanup
+
+### Overview
+
+TODO: Steal from slide
+