Blog archive — page 6
Practical guides from Digital Elliptical on product engineering, app development, AI automation, data systems, cloud architecture, Web3 software, and digital growth.
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Marketplace Commissions, Wallets, Payouts, and Disputes: An Operating Architecture Guide
Design marketplace money movement as reconstructable settlement events: commission, holds, release rules, refunds, disputes, and payouts—without treating a wallet balance as a substitute for a ledger.
On-Demand Operations: Matching, Quotes, Customer Approvals, and Completion Checkpoints
Design on-demand and field workflows around binding checkpoints—matching, pricing authority, approvals, completion evidence, and payment release—without confusing platform status with real-world service completion.
PostgreSQL, MongoDB, and Redis: Responsibility Boundaries That Keep Systems Honest
Assign store responsibilities deliberately: durable relational truth, document aggregates, and ephemeral cache/coordination—without treating Redis as a system of record or MongoDB as schema-free.
RAG, Workflow Automation, or Deterministic Rules: Choosing Where AI Belongs
Place AI by decision authority: deterministic rules for irreversible policy, workflows for orchestration, RAG for grounded assistance—and keep humans on high-risk final actions.
Modular Monolith vs Microservices: A Growth-Path Decision Guide
Choose modular monolith versus microservices based on domain boundaries, team topology, failure isolation needs, and operational maturity—not as an automatic scalability upgrade.