Writing
Dec 22, 2024 Observability Strategies for Production Systems
Logging, metrics, and tracing that actually help when things break. Building observability into debt-collections or fintech systems from day one.
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Explore our collection of working notes, system thinking frameworks, and practitioner guides.
Showing 10 topics
Locked Exploring
Dec 20, 2024 Loan Servicing State Machines
Modeling loan lifecycles as state machines. From origination through payoff, handling transitions, edge cases, and state-dependent business rules.
Writing
Dec 18, 2024 Collections Account Inbound Schema: JSON Schema + OpenSearch Query Patterns
A debt-collections view of the inbound account record. How to validate consistently with JSON Schema, then index in OpenSearch for fast worklists, segmentation, and exception handling.
Writing
Dec 18, 2024 Database Schema Patterns for Specialist Lending Solutions
Practical database design patterns for loan management, payment history, and account relationships. Balancing normalization with query performance.
Writing
Dec 15, 2024 Payment Processing Patterns in Lending Systems
Understanding idempotency, retry logic, and reconciliation patterns when handling payments at scale in lending platforms.
Writing
Dec 12, 2024 Event-Driven Architecture Patterns
Mental models for building event-driven systems. Understanding event sourcing, CQRS, eventual consistency, and when to use them in fintech contexts.
Learning
Dec 8, 2024 Failure Modes and Resilience Patterns
Anticipating how financial systems fail and building resilience. Circuit breakers, fallbacks, graceful degradation, and operational recovery.
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Dec 5, 2024 Data Flow Modeling in Financial Systems
Mapping how data moves through lending and collections systems. Understanding dependencies, bottlenecks, and designing for data integrity.
Locked Learning
Dec 3, 2024 API Design for Fintech Systems
REST API patterns for financial operations. Idempotency, versioning, error handling, and designing APIs that external partners can trust.
Learning
Nov 10, 2024 Collections Workflow Automation
Building automated collections workflows that balance recovery rates with customer experience. Dunning strategies, payment arrangements, and escalation paths.
Complex systems are not solved in one sitting.
They are understood, one SiP at a time.