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proskillv1.0.0

graphql-api-design

Design GraphQL APIs that survive production — schema modeling, resolver patterns, the N+1 problem and dataloaders, connection-style pagination, error handling, field-level authorization, federation vs monolith, and query cost limiting. With schema and dataloader examples.

$npx vanara install graphql-api-design

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Overview

GraphQL moves the query planner into your API layer: clients compose queries you never wrote, so every design decision is about bounding what arbitrary queries can do — to your database (N+1), your authorization model (field-level access), and your servers (query cost). This skill covers schema design, resolver mechanics, and the operational guardrails. Deep detail in references/, copy-paste schem

What it covers

Details

Tier
Pro — $10/mo
Version
1.0.0
Depth
3 references · 2 examples · 0 runnable scripts
Runs on
Your own Claude Code — no API keys
api-paginationImplement correct, fast API pagination — cursor vs offset trade-offs, opaque cursor encoding, stable sort keys, page-size limits, total-count costs, and consumer-side iteration that survives inserts, deletes, and retries. With runnable cursor checks.app-store-optimizationHow to optimize an app-store listing (ASO) for discovery and conversion — title, subtitle, keywords, screenshots, icon, ratings, and the metadata that drives installs. A deep reference with worked Apple and Google listings and a runnable listing linter.audit-loggingDesign tamper-evident audit logs that satisfy security and compliance — what to record (who/what/when/where/outcome), what to never log (secrets/PII), structured immutable events, hash-chaining for tamper-evidence, retention, and access control. A deep reference with runnable validation.background-jobsDesign background job systems that don't lose or double work — enqueue-after-commit, retry policies with jitter, idempotent handlers, visibility timeouts, priority lanes, scheduled and recurring jobs, worker scaling, and observability for async work. With a runnable retry-policy check.backup-and-recoveryDesign and operate a tested backup and disaster-recovery strategy — the 3-2-1 rule, RPO/RTO targets, full vs incremental vs differential, point-in-time recovery, encryption, offsite/immutable copies, retention, and the restore drills that prove a backup actually works.c4-diagrammingDocument software architecture with the C4 model (Context, Container, Component, Code) as text-based diagrams in version control. Covers the four abstraction levels, notation discipline, when to draw each level (and when to stop), supplementary diagrams, and Mermaid/Structurizr tooling.
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