# #backend — MDRSS hashtag feed

> Public MDRSS cards tagged #backend.
> Canonical feed: https://mdrss.com/feeds/backend

## Cards (36)

### [GitHub Issue Resolution Expert](https://mdrss.com/software-craft/api-backend-and-databases/901454/901454.md)

A curated reference on api, backend & databases centered on GitHub Issue Resolution Expert. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [helm-chart-scaffolding — detailed patterns and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901334/901334.md)

helm-chart-scaffolding — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Helm Chart Structure Reference](https://mdrss.com/software-craft/api-backend-and-databases/901333/901333.md)

Complete guide to Helm chart organization, file conventions, and best practices. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Full-Stack Feature Orchestrator](https://mdrss.com/software-craft/api-backend-and-databases/901312/901312.md)

You MUST follow these rules exactly. Violating any of them is a failure. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Dependency Upgrade Strategy](https://mdrss.com/software-craft/api-backend-and-databases/901298/901298.md)

You are a dependency management expert specializing in safe, incremental upgrades of project dependencies. Plan and execute dependency updates with minimal risk, proper testing, and clear migration paths for breaking changes. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [.NET Backend Development Patterns](https://mdrss.com/ai-agents/agent-design-and-orchestration/901292/901292.md)

Master C /.NET patterns for building production-grade APIs, MCP servers, and enterprise backends with modern best practices (2024/2025). Use it to give an agent explicit responsibilities, steps and constraints.

Classification: ai-agents/agent-design-and-orchestration · Feed: ai-agents · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [OpenAPI Code-First Generation and Tooling](https://mdrss.com/software-craft/api-backend-and-databases/901289/901289.md)

Advanced patterns for generating OpenAPI specs from code (Python/FastAPI, TypeScript/tsoa), validation, linting, and SDK generation. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [SQL Database Migration Strategy and Implementation](https://mdrss.com/software-craft/api-backend-and-databases/901270/901270.md)

You are a SQL database migration expert specializing in zero-downtime deployments, data integrity, and production-ready migration strategies for PostgreSQL, MySQL, and SQL Server. Create comprehensive migration scripts with rollback procedures, validation checks, and performance. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Migration Observability and Real-time Monitoring](https://mdrss.com/software-craft/api-backend-and-databases/901269/901269.md)

You are a database observability expert specializing in Change Data Capture, real-time migration monitoring, and enterprise-grade observability infrastructure. Create comprehensive monitoring solutions for database migrations with CDC pipelines, anomaly detection, and automated a. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Database optimizer](https://mdrss.com/software-craft/api-backend-and-databases/901268/901268.md)

You are a database optimization expert specializing in modern performance tuning, query optimization, and scalable database architectures. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Database admin](https://mdrss.com/software-craft/api-backend-and-databases/901267/901267.md)

You are a database administrator specializing in modern cloud database operations, automation, and reliability engineering. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [PostgreSQL Table Design](https://mdrss.com/software-craft/api-backend-and-databases/901266/901266.md)

Enable with ALTER TABLE tbl ENABLE ROW LEVEL SECURITY. Create policies: CREATE POLICY user access ON orders FOR SELECT TO app users USING (user id = current user id()). Built-in user-based access control at the row level. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Database architect](https://mdrss.com/software-craft/api-backend-and-databases/901265/901265.md)

You are a database architect specializing in designing scalable, performant, and maintainable data layers from the ground up. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Refactor and Clean Code](https://mdrss.com/software-craft/api-backend-and-databases/901236/901236.md)

You are a code refactoring expert specializing in clean code principles, SOLID design patterns, and modern software engineering best practices. Analyze and refactor the provided code to improve its quality, maintainability, and performance. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Replay Testing for Determinism and Compatibility](https://mdrss.com/software-craft/api-backend-and-databases/901213/901213.md)

Comprehensive guide for validating workflow determinism and ensuring safe code changes using replay testing. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Local Development Setup for Temporal Python Testing](https://mdrss.com/software-craft/api-backend-and-databases/901212/901212.md)

Comprehensive guide for setting up local Temporal development environment with pytest integration and coverage tracking. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Integration Testing with Mocked Activities](https://mdrss.com/software-craft/api-backend-and-databases/901211/901211.md)

Comprehensive patterns for testing workflows with mocked external dependencies, error injection, and complex scenarios. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Saga Orchestration — Advanced Patterns](https://mdrss.com/software-craft/api-backend-and-databases/901210/901210.md)

Complex implementations extracted from core skill for deeper reference. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Saga Orchestration](https://mdrss.com/software-craft/api-backend-and-databases/901209/901209.md)

Patterns for managing distributed transactions and long-running business processes without two-phase commit. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [projection-patterns — templates and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901208/901208.md)

projection-patterns — templates and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [microservices-patterns — detailed patterns and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901207/901207.md)

microservices-patterns — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [event-store-design — templates and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901206/901206.md)

event-store-design — templates and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [cqrs-implementation — templates and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901205/901205.md)

cqrs-implementation — templates and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [architecture-patterns — detailed patterns and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901204/901204.md)

architecture-patterns — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Advanced Architecture Patterns — Reference](https://mdrss.com/software-craft/api-backend-and-databases/901203/901203.md)

Deep-dive implementation examples for DDD bounded contexts, Onion Architecture, Anti-Corruption Layers, and full project structures. Referenced from SKILL.md. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Architecture Patterns](https://mdrss.com/software-craft/api-backend-and-databases/901202/901202.md)

Master proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design to build maintainable, testable, and scalable systems. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [REST API Best Practices](https://mdrss.com/software-craft/api-backend-and-databases/901201/901201.md)

REST API Best Practices captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [GraphQL Schema Design Patterns](https://mdrss.com/software-craft/api-backend-and-databases/901200/901200.md)

1. Nullable vs Non-Null : Start nullable, make non-null when guaranteed 2. Input Types : Always use input types for mutations 3. Payload Pattern : Return errors in mutation payloads 4. Pagination : Use cursor-based for infinite scroll, offset for simple cases 5. Nam. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [api-design-principles — detailed patterns and worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901199/901199.md)

api-design-principles — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Feature Development Orchestrator](https://mdrss.com/software-craft/api-backend-and-databases/901198/901198.md)

You MUST follow these rules exactly. Violating any of them is a failure. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [fastapi-templates — detailed worked examples](https://mdrss.com/software-craft/api-backend-and-databases/901191/901191.md)

fastapi-templates — detailed worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Backend architect](https://mdrss.com/software-craft/api-backend-and-databases/901190/901190.md)

You are a backend system architect specializing in scalable, resilient, and maintainable backend systems and APIs. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [SQL Style Guide: Consistent, Maintainable Queries](https://mdrss.com/software-craft/api-backend-and-databases/901086/901086.md)

Howdy! I'm Matt Mazur and I'm a data analyst who has worked at several startups to help them use data to grow their businesses. This guide is an attempt to document my preferences for formatting SQL in the hope that it may be of some use to others. If you or your team do not alre. Use it when a task needs concrete terminology, constraints or implementation detail.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Maelstrom](https://mdrss.com/software-craft/architecture-and-distributed-systems/901075/901075.md)

Maelstrom is a workbench for learning distributed systems by writing your own. It uses the Jepsen testing library to test toy implementations of distributed systems. Maelstrom provides standardized tests for things like "a commutative set" or "a transactional key-value store", an. Use it to make implementation decisions and avoid common dead ends.

Classification: software-craft/architecture-and-distributed-systems · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [100 Must-Know SQL Interview Questions in 2026](https://mdrss.com/software-craft/api-backend-and-databases/901012/901012.md)

The following example demonstrates modern syntax, including standard CTEs and relational constraints. Use it as a repeatable review, validation or hardening pass.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Domain-Driven Hexagon](https://mdrss.com/software-craft/architecture-and-design/944/944.md)

This readme includes techniques, tools, best practices, architectural patterns and guidelines gathered from different sources. Code examples are written using NodeJS, TypeScript, NestJS framework and Slonik for the database access.

Classification: software-craft/architecture-and-design · Feed: software-craft · Updated: 2026-08-04T12:22:38.168Z · Version: 1