Gaps & Roadmap Improvements

This document prioritizes architectural enhancements and missing enterprise features ranked by operational impact.

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Priority Matrix

Priority	Feature / Gap	Current State	Target State & Suggested Fix
P0	Streaming Buffer (Kafka / Kinesis)	Synchronous DB inserts	Deploy Apache Kafka in front of FastAPI ingestion nodes; workers consume in micro-batches of 1,000 events.
P0	Production Payment Gateway Webhooks	Sandbox mock gateway	Wire Stripe / Adyen webhook listeners with HMAC-SHA256 signature verification and replay tables.
P1	Automated Multi-Jurisdiction Tax	Fixed tax rate line items	Integrate Stripe Tax or Avalara AvaTax API to dynamically compute sales tax and VAT based on customer address.
P1	Redis Bloom Filter Deduplication	DB B-tree index checks	Add Redis scalable Bloom filter to reject duplicate idempotency keys in memory before querying PostgreSQL.
P2	Server-Side PDF Invoicing	Browser print stylesheet	Implement headless Chromium worker (Playwright / Weasyprint) generating signed PDF/A archival documents.
P2	Materialized Ledger Checkpoints	Historical entry summing	Create daily scheduled worker computing account balance snapshots to accelerate balance reconciliation.
P3	Interactive Pricing Sandbox	Static UI console	Build drag-and-drop React pricing builder allowing product managers to simulate revenue across tier changes.