Backend & APIs · By wshobson

Covers building subscription billing: billing cycles, subscription states, invoice generation, proration, tax handling and dunning for failed payments.

wshobson/agents

Implement distributed tracing with Jaeger and Tempo to track requests across microservices and identify performance bottlenecks.

wshobson/agents

Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns.

wshobson/agents

Test smart contracts comprehensively using Hardhat and Foundry with unit tests, integration tests, and mainnet forking.

wshobson/agents

Solidity templates for DeFi building blocks: staking with reward distribution, an automated market maker, governance tokens and flash loans.

wshobson/agents

Scaffolds FastAPI projects with a layered app layout, dependency injection through Depends, async handlers and database access, middleware and pytest setup.

wshobson/agents

Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management.

wshobson/agents

Reference for building payment systems that meet PCI DSS: the 12 requirements, merchant levels, data that must never be stored, tokenization and encryption.

wshobson/agents

Design durable workflows with Temporal for distributed systems.

wshobson/agents

Implement Stripe payment processing for robust, PCI-compliant payment flows including checkout, subscriptions, and webhooks.

wshobson/agents

Explains how to split a system into command and query sides with CQRS: handlers, events, projectors, denormalized read models and eventual consistency.

wshobson/agents

Designs event stores for event-sourced systems: requirements, a comparison of EventStoreDB, PostgreSQL, Kafka, DynamoDB and Marten, and stream and versioning practices.

wshobson/agents

Shows how to run vector and keyword search side by side and merge their results, so retrieval catches both meaning and exact terms in RAG and search systems.

wshobson/agents

Create, validate and maintain OpenAPI 3.1 specs for REST APIs, whether designed first or generated from existing code, and use them for docs and client SDKs.

wshobson/agents

Covers building read models and materialized views from event streams in CQRS and event-sourced systems, including live, catch-up, persistent and inline projections.

wshobson/agents

Master C/.NET backend development patterns for building robust APIs, MCP servers, and enterprise applications.

wshobson/agents

Implement Linkerd service mesh patterns for lightweight, security-focused service mesh deployments.

wshobson/agents

Python background job patterns including task queues, workers, and event-driven architecture.

wshobson/agents

Python resilience patterns including automatic retries, exponential backoff, timeouts, and fault-tolerant decorators.

wshobson/agents

Implement saga patterns for distributed transactions and cross-aggregate workflows.

wshobson/agents

Python project organization, module architecture, and public API design.

wshobson/agents

Design composable recommendation, ranking, and feed pipelines using the six-stage Source→Hydrator→Filter→Scorer→Selector→SideEffect framework popularized by xAI's open-sourced X For You algorithm.

wshobson/agents